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Showing records 26 to 50 of 111. [First] Page: 1 2 3 4 5 Last
Ambient Pressure-Dried Graphene⁻Composite Carbon Aerogel for Capacitive Deionization
Chen Zhang, Xiaodong Wang, Hongqiang Wang, Xueling Wu, Jun Shen
April 15, 2019 (v1)
Subject: Other
Keywords: capacitive deionization, desalination, electrosorption, graphene–composite carbon aerogel (GCCA)
Capacitive deionization (CDI) technology possessing excellent desalination performance and energy efficiency is currently being widely studied in seawater desalination. In this work, the graphene⁻composite carbon aerogels (GCCAs) easily prepared by an ambient pressure drying method served as electrodes to remove salt ions in aqueous solution by CDI. The microstructure of the obtained GCCAs was found to depend on the component content in the precursor solution, and could be controlled through varying the mass ratio of resorcinol and formaldehyde to graphene oxide (RF/GO). The surface characteristics and microstructure of GCCAs were characterized by Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). In addition, the electrochemical tests and CDI experiments of GCCA electrodes were conducted in NaCl solution. Thanks to the reasonable pore structure and highly conductive network, GCCA-150 achieved the best salt adsorption capacity of 26.9 mg/... [more]
Numerical Investigation of Hydraulic Fracture Propagation Based on Cohesive Zone Model in Naturally Fractured Formations
Jianxiong Li, Shiming Dong, Wen Hua, Xiaolong Li, Xin Pan
April 15, 2019 (v1)
Subject: Other
Keywords: hydraulic fractures, multitude parameters, naturally fracture, PPCZ, propagation pattern, stress interference
Complex propagation patterns of hydraulic fractures often play important roles in naturally fractured formations due to complex mechanisms. Therefore, understanding propagation patterns and the geometry of fractures is essential for hydraulic fracturing design. In this work, a seepage⁻stress⁻damage coupled model based on the finite pore pressure cohesive zone (PPCZ) method was developed to investigate hydraulic fracture propagation behavior in a naturally fractured reservoir. Compared with the traditional finite element method, the coupled model with global insertion cohesive elements realizes arbitrary propagation of fluid-driven fractures. Numerical simulations of multiple-cluster hydraulic fracturing were carried out to investigate the sensitivities of a multitude of parameters. The results reveal that stress interference from multiple-clusters is responsible for serious suppression and diversion of the fracture network. A lower stress difference benefits the fracture network and he... [more]
Robust Scheduling Optimization Model for Multi-Energy Interdependent System Based on Energy Storage Technology and Ground-Source Heat Pump
Zhongfu Tan, Hongwu Guo, Hongyu Lin, Qingkun Tan, Shenbo Yang, De Gejirifu, Liwei Ju, Xueying Song
April 15, 2019 (v1)
Keywords: distributed energy, Energy Storage, ground-source heat pump, PSO algorithm, robust scheduling optimization
The energy consumed by buildings makes up a significant part of total social energy consumption. The energy use rate of the traditional cooling and heating unit is low. A distributed cooling, heating, and power (CHP) system can achieve cascade use of energy and reduce the long-distance transportation of energy. Along with the wide use of ground-source heat pumps and energy storage technology, the combined cooling, heating, and power (CCHP) system coupled with a ground-source heat pump and energy storage technology is increasingly being used. Firstly, we proposed the construction of a CCHP system driven by distributed energy resources (DERs) including three subsystems of an electricity subsystem, a CCHP subsystem and an auxiliary heating subsystem as the object of study in this paper. Besides, with the goals of reducing carbon emissions, increasing energy efficiency, and minimizing system cost, a constraint mechanism based on the DOM-PSO (dynamic object method/particle swarm optimizatio... [more]
Modeling/Simulation of the Dividing Wall Column by Using the Rigorous Model
Chi Zhai, Qinjun Liu, Jose A. Romagnoli, Wei Sun
April 15, 2019 (v1)
Keywords: gProms, rigorous DWC model, the benzene–toluene–xylene system
Dividing wall column (DWC) is an atypical distillation column with an internal, vertical WE partition wall that effectively accommodates two conventional distillation columns into one to improve the thermodynamic efficiency. In previous studies, different equivalent models by combining conventional columns are adopted to approximate the DWC modeling, which may not well describe the integration of the DWC; moreover, the computational cost increases when multiple columns are implemented to represent one DWC. In this paper, a rigorous mathematical model is proposed based on the mass balance, the energy and phase equilibrium of the DWC, where decision variables and state variables are equally treated. The model was developed in the general process modeling system (gPROMS). Based on the rigorous model, the influences of liquid split ratio and vapor split ratio are discussed, and it is shown that the heat duty is sensitive to changes on the liquid and vapor split ratio. Inappropriate liquid... [more]
Integration Multi-Model to Evaluate the Impact of Surface Water Quality on City Sustainability: A Case from Maanshan City in China
Zhanbo Chen, Hui Zhang, Mingxia Liao
April 15, 2019 (v1)
Subject: Energy Policy
Keywords: ensemble learning, MCDM, multi-model evaluation, water pollution
Water pollution is a worldwide problem that needs to be solved urgently and has a significant impact on the efficiency of sustainable cities. The evaluation of water pollution is a Multiple Criteria Decision-Making (MCDM) problem and using a MCDM model can help control water pollution and protect human health. However, different evaluation methods may obtain different results. How to effectively coordinate them to obtain a consensus result is the main aim of this work. The purpose of this article is to develop an ensemble learning evaluation method based on the concept of water quality to help policy-makers better evaluate surface water quality. A valid application is conducted to illustrate the use of the model for the surface water quality evaluation problem, thus demonstrating the effectiveness and feasibility of the proposed model.
Combining Microwave Pretreatment with Iron Oxide Nanoparticles Enhanced Biogas and Hydrogen Yield from Green Algae
Asad A. Zaidi, Ruizhe Feng, Adil Malik, Sohaib Z. Khan, Yue Shi, Asad J. Bhutta, Ahmer H. Shah
April 15, 2019 (v1)
Subject: Biosystems
Keywords: algae, anaerobic digestion, biogas, biohydrogen, energy assessment, kinetic models, microwave, nanoparticles, pretreatment
The available energy can be effectively upgraded by adopting smart energy conversion measures. The biodegradability of biomass can be improved by employing pretreatment techniques; however, such methods result in reduced energy efficiency. In this study, microwave (MW) irradiation is used for green algae (Enteromorpha) pretreatment in combination with iron oxide nanoparticles (NPs) which act as a heterogeneous catalyst during anaerobic digestion process for biogas enhancement. Batch-wise anaerobic digestion was carried out. The results showed that MW pretreatment and its combination with Fe₃O₄ NPs produced highest yields of biogas and hydrogen as compared to the individual ones and control. The biogas amount and hydrogen % v/v achieved by MW pretreatment + Fe₃O₄ NPs group were 328 mL and 51.5%, respectively. The energy analysis indicated that synergistic application of MW pretreatment with Fe₃O₄ NPs produced added energy while consuming less input energy than MW pretreatment alone. The... [more]
Building Block-Based Synthesis and Intensification of Work-Heat Exchanger Networks (WHENS)
Jianping Li, Salih Emre Demirel, M. M. Faruque Hasan
April 15, 2019 (v1)
Keywords: building blocks, MINLP, superstructure, WHENS, work and heat integration
We provide a new method to represent all potential flowsheet configurations for the superstructure-based simultaneous synthesis of work and heat exchanger networks (WHENS). The new representation is based on only two fundamental elements of abstract building blocks. The first design element is the block interior that is used to represent splitting, mixing, utility cooling, and utility heating of individual streams. The second design element is the shared boundaries between adjacent blocks that permit inter-stream heat and work transfer and integration. A semi-restricted boundary represents expansion/compression of streams connected to either common (integrated) or dedicated (utility) shafts. A completely restricted boundary with a temperature gradient across it represents inter-stream heat integration. The blocks interact with each other via mass and energy flows through the boundaries when assembled in a two-dimensional grid-like superstructure. Through observation and examples from l... [more]
Chemical Recycling of Used Printed Circuit Board Scraps: Recovery and Utilization of Organic Products
Se-Ra Shin, Van Dung Mai, Dai-Soo Lee
April 15, 2019 (v1)
Subject: Other
Keywords: chemical recycling, glycolysis, recycled polyol, rigid polyurethane foam, used printed circuit board
The disposal of end-of-life printed circuit boards (PCBs) comprising cross-linked brominated epoxy resins, glass fiber, and metals has attracted considerable attention from the environmental aspect. In this study, valuable resources, especially organic material, were recovered by the effective chemical recycling of PCBs. Pulverized PCB was depolymerized by glycolysis using polyethylene glycol (PEG 200) with a molecular weight of 200 g/mol under basic conditions. The cross-linked epoxy resins were effectively decomposed into a low-molecular species by glycolysis with PEG 200, followed by the effective separation of the metals and glass fibers from organic materials. The organic material was modified into recycled polyol with an appropriate viscosity and a hydroxyl value for rigid polyurethane foams (RPUFs) by the Mannich reaction and the addition polymerization of propylene oxide. RPUFs prepared using the recycled polyol exhibited superior thermal and mechanical properties as well as th... [more]
Model for Thin Layer Drying of Lemongrass (Cymbopogon citratus) by Hot Air
Thi Van Linh Nguyen, My Duyen Nguyen, Duy Chinh Nguyen, Long Giang Bach, Tri Duc Lam
April 15, 2019 (v1)
Subject: Biosystems
Keywords: activation energy, convection drying, Cymbopogon citratus, lemongrass, mathematical modeling, moisture diffusivity
Lemongrass is a plant that contains aromatic compounds (myrcene and limonene), powerful deodorants, and antimicrobial compounds (citral and geraniol). Identifying a suitable drying model for the material is crucial for establishing an initial step for the development of dried products. Convection drying is a commonly used drying method that could extend the shelf life of the product. In this study, a suitable kinetic model for the drying process was determined by fitting moisture data corresponding to four different temperature levels: 50, 55, 60 and 65 °C. In addition, the effect of drying temperature on the moisture removal rate, the effective diffusion coefficient and activation energy were also estimated. The results showed that time for moisture removal increases proportionally with the air-drying temperature, and that the Weibull model is the most suitable model for describing the drying process. The effective diffusion coefficient ranges from 7.64 × 10−11 m²/s to 1.48 × 10−10 m²... [more]
Early Afterdepolarisations Induced by an Enhancement in the Calcium Current
André H. Erhardt
April 15, 2019 (v1)
Subject: Biosystems
Keywords: bifurcation analysis, calcium current, canard-induced EADs, geometric singular perturbation theory, multiple time scales, nonlinear dynamics
Excitable biological cells, such as cardiac muscle cells, can exhibit complex patterns of oscillations such as spiking and bursting. Moreover, it is well known that an enhancement in calcium currents may yield certain kind of cardiac arrhythmia, so-called early afterdepolarisations (EADs). The presence of EADs strongly correlates with the onset of dangerous cardiac arrhythmia. In this paper we study mathematically and numerically the dynamics of a cardiac muscle cell with respect to the calcium current by investigating a simplistic system of differential equations. For the study of this phenomena, we use bifurcation theory, numerical bifurcation analysis, geometric singular perturbation theory and computational methods to investigate a nonlinear multiple time scales system. It will turn out that EADs related to an enhanced calcium current are canard⁻induced and that we have to combine these theories to derive a better understanding of the dynamics behind EADs. Moreover, a suitable time... [more]
Announcing the 2019 Processes Travel Awards for Post-Doctoral Fellows and Ph.D. Students
Michael A. Henson, Juergen Hahn, Martha A. Grover, John D. Hedengren, Processes Editorial Office
April 15, 2019 (v1)
Subject: Education
In order to support the development of early career researchers involved in chemical and biological process/systems engineering, Processes launched the second Travel Awards for Post-doctoral Fellows and Ph. [...]
New Technical Parameters and Operational Improvements of the Metal Oxide Varistors Manufacturing Process
Flaviu Mihai Frigura-Iliasa, Sorin Musuroi, Ciprian Sorandaru, Doru Vatau
April 15, 2019 (v1)
Keywords: composition, manufacturing process, Metal Oxide Varistors, sintering pressure, sintering temperature
At the beginning, this article details the manufacturing procedures for varistor materials. Starting from the initial composition of two large series of varistors (those with two additive oxides and those with five additive oxides), there is a major overview of the main stages of the technological process and the equipment used for the production, emphasizing the technological changes that were made. The article continues with the study of the influence of the sintering pressure and the sintering temperature on the electrical properties of the varistor materials made before. There were two experimental series of 7 varistors, one series based on 2 additive oxides and one based on 5 additive oxides. Each varistor of these series was sintered at another temperature, the fundamental purpose being to determine an optimal sintering temperature for each chemical composition. A second activity consisted of manufacturing two more series of varistors with the same chemical composition (2 oxides... [more]
Categorization of Failures in Polymer Rapid Tools Used for Injection Molding
Anurag Bagalkot, Dirk Pons, Digby Symons, Don Clucas
April 9, 2019 (v1)
Keywords: additive manufacturing, failure modes, injection molding, rapid tooling
Background—Polymer rapid tooling (PRT) inserts for injection molding (IM) are a cost-effective method for prototyping and low-volume manufacturing. However, PRT inserts lack the robustness of steel inserts, leading to progressive deterioration and failure. This causes quality issues and reduced part numbers. Approach—Case studies were performed on PRT inserts, and different failures were observed over the life of the tool. Parts molded from the tool were examined to further understand the failures, and root causes were identified. Findings—Critical parameters affecting the tool life, and the effect of these parameters on different areas of tool are identified. A categorization of the different failure modes and the underlying mechanisms are presented. The main failure modes are: surface deterioration; surface scalding; avulsion; shear failure; bending failure; edge failure. The failure modes influence each other, and they may be connected in cascade sequences. Originality—The original... [more]
Supercritical CO₂ Transesterification of Triolein to Methyl-Oleate in a Batch Reactor: Experimental and Simulation Results
Geetanjali Yadav, Leonard A. Fabiano, Lindsay Soh, Julie Zimmerman, Ramkrishna Sen, Warren D. Seider
April 9, 2019 (v1)
Subject: Biosystems
Keywords: biodiesel, methyl-oleate, multiphase equilibrium, RK-ASPEN, supercritical CO2
In earlier work (Silva et al., 2016; Soh et al., 2014a; Soh et al., 2015), the supercritical CO₂ transesterification of triolein to methyl-oleate using Nafion solid-acid catalyst and large methanol/triolein molar feed ratios was carried out. Herein, these ratios are adjusted (from 50⁻550) to evaluate the yield of fatty acid methyl esters in batch laboratory reactors as temperature is varied from 80⁻95 °C and pressure is varied from 8.0⁻9.65 MPa. Also, to better understand the effect of varying these operating parameters, batch reactor simulations using the Soave-Redlich-Kwong Equation of State (RK-ASPEN EOS) in ASPEN PLUS are carried-out. A single-reaction kinetic model is used and phase equilibrium is computed as the reactions proceed. Experimental data are compared with these results.
Special Issue on Feature Papers for Celebrating the Fifth Anniversary of the Founding of Processes
Michael A. Henson
April 9, 2019 (v1)
Subject: Other
The Special Issue “Feature Papers for Celebrating the Fifth Anniversary of the Founding of Processes„ represents a landmark for this open access journal covering chemical, biological, materials, pharmaceutical, and environmental systems as well as general computational methods for process and systems engineering. [...]
Special Issue on “Transport of Fluids in Nanoporous Materials”
Xuechao Gao, Guozhao Ji, Suresh K. Bhatia, David Nicholson
April 9, 2019 (v1)
Subject: Materials
Understanding the transport behavior of fluid molecules in confined spaces is central to the design of innovative processes involving porous materials and is indispensable to the correlation of process behavior with the material structure and properties typically used for structural characterizations such as pore dimension, surface texture, and tortuosity. [...]
Characterization of Pores and Fractures in Soft Coal from the No. 5 Soft Coalbed in the Chenghe Mining Area
Pan Wei, Yunpei Liang, Song Zhao, Shoujian Peng, Xuelong Li, Ran Meng
April 9, 2019 (v1)
Subject: Materials
Keywords: coalbed methane (CBM), fractal pore characteristics, pore structure, soft coal masses
The characteristics of the pore structure and gas migration in soft coalbeds are the premise of evaluating gas discharge in soft coalbeds. To explore the pore structure characteristics of soft coal masses, the No. 5 soft coalbed in the eastern zone of Chenghe Mining Area, was investigated and compared with the No. 5 hard coalbed in the western zone. By using a mercury intrusion method, low-temperature liquid nitrogen adsorption, and scanning electron microscopy (SEM), the pore structure characteristics of the No. 5 coalbed were explored. Moreover, based on fractal theory, the pore structure of coal was characterized. The results showed the pores in soft coal mainly appeared as small pores and micropores in which the small pores accounted for nearly half of the total pore volume. Mesopores and macropores were also distributed throughout the soft coal. The mercury-injection and mercury-ejection curves of soft coal showed significant hysteresis loops, implying that pores in coal samples w... [more]
A Model-Based Investigation of Cytokine Dynamics in Immunotherapies
Brooks Hopkins, Yiming Pan, Matthew Tucker, Zuyi (Jacky) Huang
April 9, 2019 (v1)
Subject: Biosystems
Keywords: cytokine release syndrome, hierarchical clustering, immunotherapy, Monte Carlo sampling, principal component analysis, sensitivity analysis
With the advent of effective immunotherapies to battle cancers and diseases, an obstacle in recovery has become the potential side effects, specifically cytokine release syndrome (CRS). As there is little quantitative understanding of risks for developing CRS and the degree of its severity, this work explored a model-based approach to produce a library of in silico patients through sensitivity analysis of cytokine interaction parameters and a Monte Carlo sampling. The objective of producing the in silico patients was to correlate a known grading system of cytokine release syndrome severity and thus design a new formula for grading CRS. Using our CRS grading system as the foundation, this work produced not only a formula which related the in silico patient data to the different grades, but we effectively demonstrated a selective approach to reduce the grade of CRS with sequential cytokine inhibition targets. We achieved the reduction of grades by applying the insight from the sensitivit... [more]
Dynamic Performance Assessment of Primary Frequency Modulation for a Power Control System Based on MATLAB
Shizhe Li, Yinsong Wang
April 9, 2019 (v1)
Keywords: dynamic performance assessment index, internal model control, least square estimation, power control system, primary frequency modulation, valve local flow coefficient
The primary frequency modulation (PFM) performance of a power control system (PCS) is an important factor affecting the security and stability of a power grid. The traditional control method is proportional integral (PI) control. In order to improve its dynamic control performance, a control method based on the combination of internal model control (IMC) and PI is proposed. Using the method of theoretical assessment and system identification, a simple simulated model of the typical PCS is established. According to the principle of system identification and the least square estimation (LSE) algorithm, the mathematical models of a generator and a built-in model are established. According to the four dynamic performance indexes, the main and auxiliary assessment index of the PCS are defined, and the benchmark and the result of the performance assessment are given. According to three different structures, the PFM dynamic performance of the PCS is analyzed separately. According to the dynam... [more]
Trends in Advanced Functional Material Applications of Nanocellulose
Prachiben Panchal, Emmanuel Ogunsona, Tizazu Mekonnen
April 9, 2019 (v1)
Subject: Materials
Keywords: antimicrobicity, barrier properties, cellulose nanocrystals, functional materials, superhydrophobicity
The need to transition to more sustainable and renewable technology has resulted in a focus on cellulose nanofibrils (CNFs) and nanocrystals (CNCs) as one of the materials of the future with potential for replacing currently used synthetic materials. Its abundance and bio-derived source make it attractive and sought after as well. CNFs and CNCs are naturally hydrophilic due to the abundance of -OH group on their surface which makes them an excellent recipient for applications in the medical industry. However, the hydrophilicity is a deterrent to many other industries, subsequently limiting their application scope. In either light, the increased rate of progress using CNCs in advanced materials applications are well underway and is becoming applicable on an industrial scale. Therefore, this review explores the current modification platforms and processes of nanocellulose directly as functional materials and as carriers/substrates of other functional materials for advanced materials appl... [more]
Optimization of Reaction Selectivity Using CFD-Based Compartmental Modeling and Surrogate-Based Optimization
Shu Yang, San Kiang, Parham Farzan, Marianthi Ierapetritou
April 9, 2019 (v1)
Keywords: CFD-simulation, compartmental modeling, competing reaction system, Mixing, model order reduction, Optimization, surrogate-based optimization
Mixing is considered as a critical process parameter (CPP) during process development due to its significant influence on reaction selectivity and process safety. Nevertheless, mixing issues are difficult to identify and solve owing to their complexity and dependence on knowledge of kinetics and hydrodynamics. In this paper, we proposed an optimization methodology using Computational Fluid Dynamics (CFD) based compartmental modelling to improve mixing and reaction selectivity. More importantly, we have demonstrated that through the implementation of surrogate-based optimization, the proposed methodology can be used as a computationally non-intensive way for rapid process development of reaction unit operations. For illustration purpose, reaction selectivity of a process with Bourne competitive reaction network is discussed. Results demonstrate that we can improve reaction selectivity by dynamically controlling rates and locations of feeding in the reactor. The proposed methodology inco... [more]
On the Boundary Conditions in a Non-Linear Dissipative Observer for Tubular Reactors
Irandi Gutierrez-Carmona, Jaime A. Moreno, H.F. Abundis-Fong
April 9, 2019 (v1)
Keywords: distributed observers, PDE, perturbation estimation, sensor position
The modal injection mechanism ensures the exponential convergence of an observer in a continuous tubular reactor in dependence with the system parameters, the sensor location, and the observer gains. In this paper, it is shown that by simple considerations in the boundary conditions, the observer convergence is improved regardless of the presence of perturbations, the sensor locations acquire a meaningful physical meaning, and by simple numerical manipulations, the perturbations in the inflow can be numerically estimated.
Formation Mechanism of Trailing Oil in Product Oil Pipeline
Enbin Liu, Wensheng Li, Hongjun Cai, Shanbi Peng
April 9, 2019 (v1)
Subject: Other
Keywords: Computational Fluid Dynamics, contamination, dead-leg, pipeline, trailing oil, transportation
Trailing oil is the tail section of contamination in oil pipelines. It is generated in batch transportation, for which one fluid, such as diesel oil follows another fluid, such as gasoline, and it has an effect on the quality of oil. This paper describes our analysis of the formation mechanism of trailing oil in pipelines and our study of the influence of dead-legs on the formation of trailing oil. We found that the oil replacement rate in a dead-leg is exponentially related to the flow speed, and the length of the dead-leg is exponentially related to the replacement time of the oil. To reduce the amount of mixed oil, the main flow speed should be kept at about 1.6 m/s, and the length of the dead-leg should be less than five times the diameter of the main pipe. In our work, the Reynolds time-averaged method is used to simulate turbulence. To obtain contamination-related experimental data, computational fluid dynamics (CFD) software is used to simulate different flow rates and bypass le... [more]
Measuring Efficiency of Generating Electric Processes
Chia-Nan Wang, Quoc-Chien Luu, Thi-Kim-Lien Nguyen
April 9, 2019 (v1)
Subject: Energy Policy
Keywords: data envelopment analysis (DEA), Holt–Winters model, productivity efficiency, undesirable model
Electric energy sources are the foundation for supporting for the industrialization and modernization; however, the processes of electricity generation increase CO₂ emissions. This study integrates the Holt⁻Winters model in number cruncher statistical system (NCSS) to estimate the forecasting data and the undesirable model in data envelopment analysis (DEA) to calculate the efficiency of electricity production in 14 countries all over the world from past to future. The Holt⁻Winters model is utilized to estimate the future; then, the actual and forecasting data are applied into the undesirable model to compute the performance. From the principle of an undesirable model, the study determines the input and output factors as follows nonrenewable and renewable fuels (inputs), electricity generation (desirable output), and CO₂ emissions (undesirable output). The empirical results exhibit efficient/inefficient terms over the period from 2011⁻2021 while converting these fuels into electricity... [more]
2D Plane Strain Consolidation Process of Unsaturated Soil with Vertical Impeded Drainage Boundaries
Minghua Huang, Dun Li
April 9, 2019 (v1)
Keywords: consolidation process, excess pore-pressures, impeded drainage boundary, semi-analytical solution, unsaturated soil
The consolidation process of soil stratum is a common issue in geotechnical engineering. In this paper, the two-dimensional (2D) plane strain consolidation process of unsaturated soil was studied by incorporating vertical impeded drainage boundaries. The eigenfunction expansion and Laplace transform techniques were adopted to transform the partial differential equations for both the air and water phases into two ordinary equations, which can be easily solved. Then, the semi-analytical solutions for the excess pore-pressures and the soil layer settlement were derived in the Laplace domain. The final results in the time domain could be computed by performing the numerical inversion of Laplace transform. Furthermore, two comparisons were presented to verify the accuracy of the proposed semi-analytical solutions. It was found that the semi-analytical solution agreed well with the finite difference solution and the previous analytical solution from the literature. Finally, the 2D plane stra... [more]
Showing records 26 to 50 of 111. [First] Page: 1 2 3 4 5 Last