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Artículos de revistas sobre el tema "Mass transfer – Computer simulation"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 5 de febrero de 2022

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1

MOWLA, D. y M. T. BABAYAN. "COMPUTER SIMULATION OF MASS TRANSFER IN AGGREGATIVE FLUIDIZED BEDS". Chemical Engineering Communications 95, n.º 1 (septiembre de 1990): 99–105. http://dx.doi.org/10.1080/00986449008911470.

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2

McCready, M. J., Eleni Vassiliadou y T. J. Hanratty. "Computer simulation of turbulent mass transfer at a mobile interface". AIChE Journal 32, n.º 7 (julio de 1986): 1108–15. http://dx.doi.org/10.1002/aic.690320707.

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3

Bojarchuk, A. A., V. M. Chechetkin, O. A. Kuznetzov y Yu P. Popov. "Stellar Evolution and Mass Transfer in Binaries". International Astronomical Union Colloquium 137 (1993): 807–9. http://dx.doi.org/10.1017/s0252921100018947.

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4

Bjorn Wilhelmsson y Stig Stenstrom. "Heat and Mass Transfer Coefficients in Computer Simulation of Paper Drying". Drying Technology 13, n.º 4 (enero de 1995): 959–75. http://dx.doi.org/10.1080/07373939508916993.

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5

Kamke, F. A. y J. B. Wilson. "Computer simulation of a rotary dryer. Part II: Heat and Mass Transfer". AIChE Journal 32, n.º 2 (febrero de 1986): 269–75. http://dx.doi.org/10.1002/aic.690320214.

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6

Kissel, John C. "Modeling Mass Transfer in Biological Wastewater Treatment Processes". Water Science and Technology 18, n.º 6 (1 de junio de 1986): 35–45. http://dx.doi.org/10.2166/wst.1986.0059.

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Parameters characterizing intrasolid, liquid/solid, and gas/liquid mass transport phenomena in biological treatment systems are required if mass transfer is to be included in process models. Estimates of such parameters are presented and discussed. Collective and individual effects of mass transfer resistances are illustrated by computer simulation of a high-rate trickling filter.

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7

Kolmychkov, V. V. "COMPUTER SIMULATION FOR SUBCRITICAL CONVECTION IN MULTI‐COMPONENT ALLOYS". Mathematical Modelling and Analysis 11, n.º 1 (31 de marzo de 2006): 57–71. http://dx.doi.org/10.3846/13926292.2006.9637302.

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Subcritical convection with hexagonal flow pattern is registered in 3D computer simulation of convective mass transfer in ternary solution under phase transition conditions. The calculations are evaluated by the classical theory of hydrodynamic stability and display a good agreement with linear and finite amplitude stability analysis. Key words: convective instability, subcritical convection, computer simulation.

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8

Kuehn, Thomas. "Computer Simulation of Airflow and Particle Transport in Cleanrooms". Journal of the IEST 31, n.º 5 (1 de septiembre de 1988): 21–27. http://dx.doi.org/10.17764/jiet.1.31.5.464773718u8051x2.

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Numerical procedures are well developed for simulating simple fluid flows and associated heat and mass transfer processes. Steady isothermal airflow in either a vertical laminar flow cleanroom or a tunnel cleanroom can be predicted accurately by using currently available simulation codes. The effects of items such as shields, process equipment, robot components, and bench design on the cleanroom airflow can be investigated by performing simulation experiments on a computer rather than physical experiments on a mockup. Design and operating parameters can be readily varied in the simulation to demonstrate their influence on the cleanroom performance. A review of existing airflow and particle transport simulation methods is presented and some recent applications to cleanroom airflow prediction are described. Advantages of computer simulation over experimental measurements and limitations are discussed, and future directions of cleanroom modeling are presented.

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9

Askarova, Aliya, Saltanat Bolegenova, Symbat Bolegenova, Meruyert Beketayeva, Valeriy Maximov, Aizhan Nugymanova y Pavel Šafařík. "SIMULATION OF LOW-GRADE COAL COMBUSTION IN REAL CHAMBERS OF ENERGY OBJECTS". Acta Polytechnica 59, n.º 2 (30 de abril de 2019): 98–108. http://dx.doi.org/10.14311/ap.2019.59.0098.

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The aim of the work is to create new computer technologies for 3D modelling of heat and mass transfer processes in high-temperature physicochemically reacting environments that will allow to determine the aerodynamics of the flow and heat and mass transfer characteristics of technological processes occurring in the combustion chambers in existing coal-fired thermal power plants of the Republic of Kazakhstan. The novelty of the research lies in the use of the latest information technologies of 3D modelling, which will enable project participants to obtain new data on complex heat and mass transfer processes when burning pulverized coal in real combustion chambers operating in Kazakhstan’s Thermal Power Plants (TPP). A numerical simulation, including thermodynamic, kinetic and threedimensional computer simulation of heat and mass transfer processes when burning low-grade fuel, will allow finding optimal conditions for setting adequate physical, mathematical and chemical models of the technological process of combustion of burning high ash coals. The computer modelling methods proposed for the development are new and technically feasible, since coal-fired power plants all over the world use all types of coal. The developed technologies will allow replacing or eliminating the conduct of expensive and labour-consuming natural experiments on coal-fired power plants.

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10

Bothe, Dieter, Michael Kroger, Andreas Alke y Hans Joachim Warnecke. "VOF-based simulation of reactive mass transfer across deformable interfaces". Progress in Computational Fluid Dynamics, An International Journal 9, n.º 6/7 (2009): 325. http://dx.doi.org/10.1504/pcfd.2009.027363.

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11

Kalua, Amos y James Jones. "Epistemological Framework for Computer Simulations in Building Science Research: Insights from Theory and Practice". Philosophies 5, n.º 4 (22 de octubre de 2020): 30. http://dx.doi.org/10.3390/philosophies5040030.

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Computer simulations are widely used within the area of building science research. Building science research deals with the physical phenomena that affect buildings, including heat and mass transfer, lighting and acoustic transmission. This wide usage of computer simulations, however, is characterized by a divergence in thought on the composition of an epistemological framework that may provide guidance for their deployment in research. This paper undertakes a fundamental review of the epistemology of computer simulations within the context of the philosophy of science. Thereafter, it reviews the epistemological framework within which computer simulations are used in practice within the area of building science research. A comparison between the insights obtained from the realms of theory and practice is made, which then interrogates the adequacy of the epistemological approaches that have been employed in previously published simulation-based research. These insights may help in informing a normative composition of an adequate epistemological framework within which computer simulation-based building science research may be conducted.

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12

Mahal, B. S., D. E. R. Clark y J. E. L. Simmons. "Mass-Spring Simulation of Deformation in Elastic Sheet Structures". Presence: Teleoperators and Virtual Environments 10, n.º 3 (junio de 2001): 331–42. http://dx.doi.org/10.1162/105474601300343649.

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Traditionally, continuous deformable models are represented using control points that are arranged in a grid format. The interaction properties between these points are controlled via a series of interconnections that are used in physically based modeling to represent environmental effects within a simulation. These effects vary from the transfer of forces from one control point (or node) to its neighboring nodes, through to representing real-world forces such as friction and energy damping that affect any object placed in an uncontrolled environment. This paper presents a real-time, computationally inexpensive environment for accurate simulations of sheet materials on a personal computer. The approach described differs from other techniques through its novel use of multilayer sheet structures. The ultimate aim is to incorporate into the environment the capacity to simulate a range of temperatures. A pseudo-immersive “window on world” (WoW) environment is used to handle the implementation of the real-time, aesthetically accurate deformation algorithm (MaSSE-Mass-Spring Simulation Engine). The motion of the sheet is controlled by simulated gravity and through its interaction with a mouse-pointing device. In addition, the mouse may be used to manipulate the sheet. An obvious application of the environment is centered on mechanical engineering-based real-time simulations of heat-sensitive sheet materials. This would allow for a wide range of applications in virtual manufacturing.

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13

Askarova A.S., Bolegenova S.A., Safarik P., Bolegenova S.A., Maximov V.Yu, Beketayeva M.T. y Nugymanova A.O. "MODERN COMPUTING EXPERIMENTS ON PULVERIZED COAL COMBUSTION PROCESSES IN BOILER FURNACES". PHYSICO-MATHEMATICAL SERIES, n.º 6 (15 de diciembre de 2018): 5–14. http://dx.doi.org/10.32014/2018.2518-1726.11.

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The aim of the work is to create new computer technologies for 3D modeling of heat and mass transfer processes in high-temperature physico-chemical-reactive environments that will allow to determine the aerodynamics of the flow, heat and mass transfer characteristics of technological processes occurring in the combustion chambers in the operating coal TPP RK. The novelty of the research lies in the use of the latest information technologies of 3D modeling, which will allow project participants to obtain new data on the complex processes of heat and mass transfer during the burning of pulverized coal in real combustion chambers operating in the CHP of RK. Numerical simulation, including thermodynamic, kinetic and three-dimensional computer simulation of heat and mass transfer processes when burning low-grade fuel, will allow finding optimal conditions for setting adequate physical, mathematical and chemical models of the technological process of combustion, as well as conduct a comprehensive study and thereby develop ways to optimize the process of ignition, gasification and burning high ash coals. The proposed methods of computer simulation are new and technically feasible when burning all types of coal used in pulverized coal-fired power plants around the world. The developed technologies will allow replacing or eliminating the conduct of expensive and labor-consuming natural experiments on coal-fired power plants.

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14

Wang, Xue Ping, Wei Wei Cao, Yong Song y Zhen Wei Zhang. "Analysis of Mass Transfer during Loose Material’s Convective Drying". Advanced Materials Research 317-319 (agosto de 2011): 2018–21. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.2018.

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Abstract. The thesis focuses on how to get the mathematical model of mass transfer under some certain simplified conditions and how to gain the moisture content of materials under drying. In this process, authors utilized phenomenological equations of heat and moisture transfer and analyzed the relationship and cross effects between force and flow, which were about various kinds of heat and mass transfer. In addition, the authors also used computer simulation in drying process. The result of the study is that drying rate depends on the speed of the internal moisture migration. The conclusions of this thesis have great significance for selecting the dryer and in the actual production.

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15

Yu, Huidan, Jinsuo Zhang y Ning Li. "Lattice Boltzmann simulation of mass transfer in thermally driven cavity flows". Progress in Computational Fluid Dynamics, An International Journal 8, n.º 1/2/3/4 (2008): 206. http://dx.doi.org/10.1504/pcfd.2008.018091.

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16

Syaubari, Syaubari y S. Nurdin. "Numerical Solution Of Electrokinetics Mass Transfer Model For Protein Recovery Through Membrane Electrofilter". REAKTOR 7, n.º 02 (19 de junio de 2017): 66. http://dx.doi.org/10.14710/reaktor.7.02.66-69.

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Separation based on electrophoresis and electroosmosis (electrokinetics) of binary mixture of proteins (bovine serum albumin-hemoglobin) was studied on a membrane electrofilter. The mixture was separated using ionic polycarbonate membrane with variable studied consist of voltage, current, protein diffusivity, and electrophoresis mobility. Operation parameters were varied to investigate hemoglobin concentration, which pass semi permeable membrane. A model was been derived based on mass transfer principle for the case of unsteady state. For simplification, the model has been modified using Cramer Method with pseudo steady state approach to give the dimentionless form. A program for computer simulation has een written in C/C+ + language. This programming language was shown to have more effective computing ability. Furthermore, using a model and simulation on computer, the result indicates that initial mechanism of electrofilter can also be used to separate and to concentrate protein on their buffer solution.Keywords : electrophoresis, electroosmosis, protein, membrane, electrofilter

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17

Meshalkin, V. P., S. V. Panchenko, D. S. Panchenko, V. V. Men’shikov y A. S. Kazak. "Computer-aided simulation of heat- and mass-transfer processes in an ore-reduction electrothermal reactor". Theoretical Foundations of Chemical Engineering 49, n.º 5 (septiembre de 2015): 606–11. http://dx.doi.org/10.1134/s004057951505022x.

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18

Vlasyuk, Anatolii y Ihor Ilkiv. "Mathematical and Computer Simulation of the Interconnected Processes Mass, Heat and Moisture Transfer in Horizontal Soil Media". Modeling, Control and Information Technologies, n.º 3 (6 de noviembre de 2019): 82–83. http://dx.doi.org/10.31713/mcit.2019.49.

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The nonlinear mathematical model of a interconnected processes of moisture transfer, mass and heat transfer in horizontal soil layer is presented. The numerical solution of the respective boundary value problem was obtained by the method of finite differences using the monotonic scheme. Software was created on the basic of developed algorithms and a series of numerical experiments were done.

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19

Narang, Hira, Fan Wu y Abdul Rafae Mohammed. "An Efficient Acceleration of Solving Heat and Mass Transfer Equations with the Second Kind Boundary Conditions in Capillary Porous Radially Composite Cylinder Using Programmable Graphics Hardware". Computer and Information Science 13, n.º 2 (29 de abril de 2020): 75. http://dx.doi.org/10.5539/cis.v13n2p75.

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With the recent developments in computing technology, increased efforts have gone into the simulation of various scientific methods and phenomenon in engineering fields. One such case is the simulation of heat and mass transfer equations which is becoming more and more important in analyzing various scenarios in engineering applications. Analysing the heat and mass transfer phenomenon under various environmental conditions require us to simulate it. However, this process of numerical solution of heat and mass transfer equations is very time consuming. Therefore, this paper aims at utilizing one of the acceleration techniques developed in the graphics community that exploits a graphics processing unit (GPU) which is applied to the numerical solutions of heat and mass transfer equations. The nVidia Compute Unified Device Architecture (CUDA) programming model can be a good method of applying parallel computing to program the graphical processing unit. This paper shows a good improvement in the performance, while solving the heat and mass transfer equations for a capillary porous radially composite cylinder with the second kind of boundary conditions, numerically running on GPU. This heat and mass transfer simulation is implemented using CUDA platform on nVidia Quadro FX 4800 graphics card. Our experimental results depict the drastic performance improvement when GPU is used to perform heat and mass transfer simulation. GPU can significantly accelerate the performance with a maximum observed speedup of more than 8 fold times. Therefore, the GPU is a good approach to accelerate the heat and mass transfer simulation.

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20

Liu, Sean X. y Ming Peng. "Verification of mass transfer simulation with CFD using highly accurate solutions". Computers and Electronics in Agriculture 49, n.º 2 (noviembre de 2005): 309–14. http://dx.doi.org/10.1016/j.compag.2005.05.003.

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21

Zhang, Kaiyi, Fengshuang Du y Bahareh Nojabaei. "Effect of Pore Size Heterogeneity on Hydrocarbon Fluid Distribution, Transport, and Primary and Secondary Recovery in Nano-Porous Media". Energies 13, n.º 7 (3 de abril de 2020): 1680. http://dx.doi.org/10.3390/en13071680.

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In this paper, we investigate the effect of pore size heterogeneity on fluid composition distribution of multicomponent-multiphase hydrocarbons and its subsequent influence on mass transfer in shale nanopores. The change of multi-contact minimum miscibility pressure (MMP) in heterogeneous nanopores was investigated. We used a compositional simulation model with a modified flash calculation, which considers the effect of large gas–oil capillary pressure on phase behavior. Different average pore sizes for different segments of the computational domain were considered and the effect of the resulting heterogeneity on phase change, composition distributions, and production was investigated. A two-dimensional formulation was considered here for the application of matrix–fracture cross-mass transfer and the rock matrix can also consist of different segments with different average pore sizes. Both convection and molecular diffusion terms were included in the mass balance equations, and different reservoir fluids such as ternary mixture syntactic oil, Bakken oil, and Marcellus shale condensate were considered. The simulation results indicate that oil and gas phase compositions vary in different pore sizes, resulting in a concentration gradient between the two adjacent pores of different sizes. Given that shale permeability is extremely small, we expect the mass transfer between the two sections of the reservoir/core with two distinct average pore sizes to be diffusion-dominated. This observation implies that there can be a selective matrix–fracture component mass transfer as a result of confinement-dependent phase behavior. Therefore, the molecular diffusion term should be always included in the mass transfer equations, for both primary and gas injection enhanced oil recovery (EOR) simulation of heterogeneous shale reservoirs.

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22

Adeyanju, James Abiodun, John Oluranti Olajide, Emmanuel Olusola Oke y Akinbode Adeyemi Adedeji. "Mathematical Modelling and Numerical Simulation of Mass Transfer During Deep-Fat Frying of Plantain (Musa paradisiacal AAB) Chips (ipekere)". Acta Universitatis Cibiniensis. Series E: Food Technology 24, n.º 2 (1 de diciembre de 2020): 247–56. http://dx.doi.org/10.2478/aucft-2020-0022.

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Abstract This study developed a mathematical model following the fundamental principles of mass transfer for the simulation of the oil and moisture content change during the Deep-Fat Frying of plantain (ipekere) chip. The explicit Finite Difference Technique (FDT) was used to conduct a numerical solution to the consequential governing equation (partial differential equation) that was used to describe the mass transfer rate during the process. Computer codes that were computed in MATLAB were used for the implementation of FDT at diverse frying conditions. Samples of the plantain were cut into portions of 2 mm thickness, and these sliced portions were fried at separate frying oil temperatures (170, 180 and 190°C) between 0.5 and 4 minutes. The experimental data and the predicted outcomes were compared for the validation of the model, and the juxtaposition revealed a plausible agreement. The predicted values and the experimental values of oil and moisture transfer models produced correlation coefficients that range from 0.96 to 0.99 and 0.94 to 0.99, respectively. The predicted outcomes could be utilized for the control and design of the DFF.

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23

Benton, D. J. y W. R. Waldrop. "Computer Simulation of Transport Phenomena in Evaporative Cooling Towers". Journal of Engineering for Gas Turbines and Power 110, n.º 2 (1 de abril de 1988): 190–96. http://dx.doi.org/10.1115/1.3240102.

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A computer model of the simultaneous heat, mass, and momentum transfer processes occurring throughout an entire cooling tower is described in this paper. The model includes the flexibility to analyze the several configurations, fill arrangements, and flow distributions commonly used by the power industry. The fundamental governing equations are solved using a finite-integral technique to provide a quasi-two-dimensional description of the flow and cooling process within the tower. The model has been successfully compared with field data from cooling towers at three TVA power plants as well as data from other utilities. Each of these towers was significantly different in design, thereby demonstrating the versatility of the model for correctly predicting the cooling performance of mechanical and natural draft towers, as well as crossflow and counterflow orientations, for a range of meteorological and plant operating conditions.

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24

Liao, Zhijie, Churn K. Poh, Zhongping Huang, Peter A. Hardy, William R. Clark y Dayong Gao. "A Numerical and Experimental Study of Mass Transfer in the Artificial Kidney". Journal of Biomechanical Engineering 125, n.º 4 (1 de agosto de 2003): 472–80. http://dx.doi.org/10.1115/1.1589776.

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To develop a more efficient and optimal artificial kidney, many experimental approaches have been used to study mass transfer inside, outside, and cross hollow fiber membranes with different kinds of membranes, solutes, and flow rates as parameters. However, these experimental approaches are expensive and time consuming. Numerical calculation and computer simulation is an effective way to study mass transfer in the artificial kidney, which can save substantial time and reduce experimental cost. This paper presents a new model to simulate mass transfer in artificial kidney by coupling together shell-side, lumen-side, and transmembrane flows. Darcy’s equations were employed to simulate shell-side flow, Navier-Stokes equations were employed to simulate lumen-side flow, and Kedem-Katchalsky equations were used to compute transmembrane flow. Numerical results agreed well with experimental results within 10% error. Numerical results showed the nonuniform distribution of flow and solute concentration in shell-side flow due to the entry/exit effect and Darcy permeability. In the shell side, the axial velocity in the periphery is higher than that in the center. This numerical model presented a clear insight view of mass transfer in an artificial kidney and may be used to help design an optimal artificial kidney and its operation conditions to improve hemodialysis.

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25

Welch, Samuel W. J. "Local Simulation of Two-Phase Flows Including Interface Tracking with Mass Transfer". Journal of Computational Physics 121, n.º 1 (octubre de 1995): 142–54. http://dx.doi.org/10.1006/jcph.1995.1185.

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26

Kumar, Mahesh, K. S. Kasana, Sudhir Kumar y Om Prakash. "Experimental study on heat and mass transfer for heating milk". Journal of Energy in Southern Africa 22, n.º 3 (1 de agosto de 2011): 45–53. http://dx.doi.org/10.17159/2413-3051/2011/v22i3a3221.

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In this paper, an attempt has been made to estimate the convective heat transfer coefficient for sensible heating of milk in a stainless steel pot during khoa, made by traditional method. Various indoor experiments were performed for simulation of a developed thermal model for maximum evaporation by varying heat inputs from 240 watts to 420 watts. The experimental data was used to determine values of constants in the well known Nusselt expression by simple linear regression analysis and, consequently, convective heat transfer coefficients were determined. It is found that the convective heat transfer coefficients decrease with an increase in rate of heating. The experimental error in terms of percent uncertainty was also evaluated.

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27

DIRECTOR, L. B., S. E. FRID, V. YA MENDELEEV y S. N. SCOVOROD'KO. "Computer Simulation of Heat and Mass Transfer in Tissue During High-Intensity Long-Range Laser Irradiation". Annals of the New York Academy of Sciences 858, n.º 1 BIOTRANSPORT (septiembre de 1998): 56–65. http://dx.doi.org/10.1111/j.1749-6632.1998.tb10140.x.

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28

Parry, J. L. "Mathematical modelling and computer simulation of heat and mass transfer in agricultural grain drying: A review". Journal of Agricultural Engineering Research 32, n.º 1 (julio de 1985): 1–29. http://dx.doi.org/10.1016/0021-8634(85)90116-7.

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29

Pal�cz, B�la. "Modelling and Simulation of Heat and Mass Transfer, via Symbolic Computation". Mathematical and Computer Modelling of Dynamical Systems 6, n.º 4 (2 de diciembre de 2000): 407–24. http://dx.doi.org/10.1076/mcmd.6.4.407.3657.

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30

Tang, Xiaojin, Guangshen Luo, Hongbo Li y Jiading Wang. "A dynamic interaction mass transfer model for simulating the mass transfer process in extraction columns". Computers & Chemical Engineering 30, n.º 6-7 (mayo de 2006): 978–88. http://dx.doi.org/10.1016/j.compchemeng.2005.12.018.

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31

Markovska, Ljiljana, Vera Meshko y Mirko Marinkovski. "Modeling of the adsorption kinetics of zinc onto granular activated carbon and natural zeolite". Journal of the Serbian Chemical Society 71, n.º 8-9 (2006): 957–67. http://dx.doi.org/10.2298/jsc0609957m.

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The isotherms and kinetics of zinc adsorption from aqueous solution onto granular activated carbon (GAC) and natural zeolite were studied using an agitated batch adsorber. The maximum adsorption capacities of GAC and natural zeolite towards zinc(II) from Langmuir adsorption isotherms were determined using experimental adsorption equilibrium data. The homogeneous solid diffusion model (HSD-model) combined with external mass transfer resistance was applied to fit the experimental kinetic data. The kinetics simulation study was performed using a computer program based on the proposed mathematical model and developed using gPROMS. As the two-mass transfer resistance approach was applied, two model parameters were fitted during the simulation study. External mass transfer and solid phase diffusion coefficients were obtained to predict the kinetic curves for varying initial Zn(II) concentration at constant agitation speed and constant adsorbent mass. For any particular Zn(II) - adsorbent system, k f was constant, except for the lowest initial concentration, while D s was found to increase with increasing initial Zn(II) concentration.

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32

Kowalska, Kinga y Bogdan Ambrożek. "Modeling the Performance of Water-Zeolite 13X Adsorption Heat Pump". Archives of Thermodynamics 38, n.º 4 (20 de diciembre de 2017): 191–207. http://dx.doi.org/10.1515/aoter-2017-0031.

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Abstract The dynamic performance of cylindrical double-tube adsorption heat pump is numerically analysed using a non-equilibrium model, which takes into account both heat and mass transfer processes. The model includes conservation equations for: heat transfer in heating/cooling fluids, heat transfer in the metal tube, and heat and mass transfer in the adsorbent. The mathematical model is numerically solved using the method of lines. Numerical simulations are performed for the system water-zeolite 13X, chosen as the working pair. The effect of the evaporator and condenser temperatures on the adsorption and desorption kinetics is examined. The results of the numerical investigation show that both of these parameters have a significant effect on the adsorption heat pump performance. Based on computer simulation results, the values of the coefficients of performance for heating and cooling are calculated. The results show that adsorption heat pumps have relatively low efficiency compared to other heat pumps. The value of the coefficient of performance for heating is higher than for cooling

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33

Chan, Der-Sheng. "Computer Simulation with a Temperature-Step Frying Approach to Mitigate Acrylamide Formation in French Fries". Foods 9, n.º 2 (16 de febrero de 2020): 200. http://dx.doi.org/10.3390/foods9020200.

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A heat and mass-transfer model coupled with reaction kinetics was developed to simulate frying. Obtaining an accurate mathematical model of the Maillard reaction and the heat and mass transfer is crucial for predicting the transient acrylamide formation, temperature, and water content in French fries. The objective of this study was to mitigate the formation of acrylamide in a potato strip by adopting a temperature step frying approach (TSFA). A considerable increase in the water content and a decrease in the temperature and acrylamide formation were observed in a potato strip fried with the TSFA compared with a potato strip fried without the TSFA process. The acrylamide content in a potato strip when fried using the TSFA decreased considerably to 57% of that in a potato strip fried without using the TSFA. Simulation of the acrylamide distribution in a potato strip revealed that the crust contains the highest amount of acrylamide. The proposed model can be successfully used to obtain high-quality products, mitigate acrylamide formation, and save energy.

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34

Kubacki, Slawomir y Erik Dick. "Simulation of impinging jet mass transfer at high Schmidt number with algebraic models". Progress in Computational Fluid Dynamics, An International Journal 11, n.º 1 (2011): 30. http://dx.doi.org/10.1504/pcfd.2011.037570.

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35

Menacho, Joaquin, Oriol Pou, Xavier Tomás, Eduard Serra, Rosa Nomen y Julià Sempere. "Efficient simulation of a separation column with axial diffusion and mass transfer resistance". Computers & Chemical Engineering 53 (junio de 2013): 143–52. http://dx.doi.org/10.1016/j.compchemeng.2013.03.008.

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36

Marcotte, Michele y Marc Le Maguer. "Mass transfer in cellular tissues. Part II: Computer simulations vs experimental data". Journal of Food Engineering 17, n.º 3 (enero de 1992): 177–99. http://dx.doi.org/10.1016/0260-8774(92)90068-h.

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37

BILIAIEV, M., O. BERLOV, V. BILIAIEVA y O. VERGUN. "SIMULATION OF A WATER CURTAIN APPLICATION TO PROTECT WORKERS FROM THERMAL INJURIES". Ukrainian Journal of Civil Engineering and Architecture, n.º 2 (23 de agosto de 2021): 28–35. http://dx.doi.org/10.30838/j.bpsacea.2312.270421.28.748.

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Problem statement. The problem of evaluating the effectiveness of using the water curtain to reduce the risk of thermal injury to people in a fire is considered. The problem is to determine the temperature fields when supplying water for air cooling. The purpose of the article. Development of a numerical model for calculating the process of propagation of water droplets in the air, their evaporation to reduce the temperature of heated air due to fire. Methodology. For mathematical modeling of the process of propagation of water droplets in air, thermal air pollution, the convective-diffusion equation of mass transfer, the energy equation and the equation describing the motion of an ideal liquid (potential flow model) are used. The potential flow model allows you to quickly determine the field of air flow velocity in areas with a complex geometric shape. Implicit difference splitting schemes are used for numerical integration of the convective-diffusion mass transfer equation and the energy equation. Physical splitting of basic equations is used to construct a difference analogue of modeling equations. The Richardson method and the conditional approximation scheme are used to solve the aerodynamics problem of determining the velocity potential field and the components of the air velocity vector. An engineering method for calculating the process of evaporation of a drop of water based on Sreznevsky's law has been developed. Scientific novelty. An effective numerical model has been developed that allows the method of computational experiment to determine the efficiency of using the water curtain to reduce the level of thermal pollution of atmospheric air due to fire. The numerical model is based on the integration of the fundamental equations of aerodynamics, heat and mass transfer. The model takes into account the most significant physical factors that affect the process under study: the movement of heated air, the movement of water droplets in the air, evaporation of the droplet, and so on. Practical significance. Based on the built model, a computer code has been created that allows you to quickly determine the temperature fields in the air when using a water curtain. The numerical model will be useful when conducting computational experiments for the purpose of scientifically sound choice of the location of the water curtain in case of fire. Conclusions. A computer code has been created that allows a computational experiment to investigate the effectiveness of using a water curtain in a fire. The developed computer program can be implemented on low and medium power computers. The results of a computational experiment are presented.

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38

Wang, Lulu, Hang Guo, Fang Ye y Chongfang Ma. "Two-Dimensional Simulation of Mass Transfer in Unitized Regenerative Fuel Cells under Operation Mode Switching". Energies 9, n.º 1 (15 de enero de 2016): 47. http://dx.doi.org/10.3390/en9010047.

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39

Stegou-Sagia, A. "An experimental study and a computer simulation of heat and mass transfer for three-dimensional humidification processes". Communications in Numerical Methods in Engineering 12, n.º 11 (noviembre de 1996): 719–29. http://dx.doi.org/10.1002/(sici)1099-0887(199611)12:11<719::aid-cnm8>3.0.co;2-1.

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40

Belyakov, V. A., O. G. Filatov, S. A. Grigoriev, S. E. Sytchevsky y V. N. Tanchuk. "Computer code ‘ORION’ for simulation of heat and mass transfer in materials impacted by high heat fluxes". Plasma Devices and Operations 12, n.º 2 (junio de 2004): 103–21. http://dx.doi.org/10.1080/10519990310001639580.

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41

Altabbakh, Dr Ban A. Ahmed, Sattar J. Hussen y Saba A. Yosif. "Simultaneous Mass, Heat and Momentum Transfer in an Adiabatic Packed Bed Reactor". Journal of Petroleum Research and Studies 3, n.º 1 (6 de mayo de 2021): 1–25. http://dx.doi.org/10.52716/jprs.v3i1.61.

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Process modeling or computer simulation is one of the most important studies which gives the engineer a whole description about certain processes including all the mathematical relationships that are relating the process variables. Transport phenomena on fixed bed reactor was studied because of their importance and their effects on the catalyst performance in all chemical reactions. Simultaneous mass , heat and pressure drop were studied and all the process variables such as temperature, rate of reaction , pressure along length of the reactor were calculated and the data obtained from the mathematical package showed that with the increase the reaction temperature the process production , rate of reaction and pressure drop will increase.

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42

Rovin, S. L., L. E. Rovin, V. A. Zharanov y V. S. Mazurov. "THE MOVEMENT AND MIXING OF DISPERSED MATERIALS IN ROTARY FURNACES". Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), n.º 2 (4 de julio de 2017): 117–27. http://dx.doi.org/10.21122/1683-6065-2017-2-117-127.

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This article describes motion and heat and mass transfer in the layer of dispersed material in a rotary furnace. Presents the results of a comprehensive study of these processes, including pilot studies, computer modeling and simulation, which allow to optimize the design and process parameters of rotary furnaces.

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43

Jang, Hyesoo, Myoung-Hwan Kim, Sang-Kyun Park, Yul-Seong Kim y Byung Chul Choi. "Simulation of Heat and Mass Transfer Characteristics for the Optimal Operating Conditions of a Gas-to-Gas Membrane Humidifier with Porous Metal Foam". Energies 13, n.º 19 (1 de octubre de 2020): 5110. http://dx.doi.org/10.3390/en13195110.

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The shell-and-tube type gas-to-gas membrane humidifier used with air supply to polymer electrolyte membrane fuel cell supplies heat and vapor through a membrane and does not require an additional power source. Packing porous metal foam in the flow path of the membrane humidifier can result in higher heat and mass transfer efficiencies due to heat conduction through metal. In this study, the influence of various operating conditions and types of porous metal foams on the transport characteristics of the membrane humidifier are evaluated by simulation. The main factor causing the improvement of heat and mass transfer is the high conductivity of the porous metal foam, which is significantly correlated with the type of material used, compression ratio, and pore diameter. Additionally, the heat and mass transfer changes significantly when the flow velocity and channel size change due to the effect of the metal foam becoming more pronounced.

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44

Huang, Z. J. y J. M. Tarbell. "Numerical simulation of mass transfer in porous media of blood vessel walls". American Journal of Physiology-Heart and Circulatory Physiology 273, n.º 1 (1 de julio de 1997): H464—H477. http://dx.doi.org/10.1152/ajpheart.1997.273.1.h464.

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The tunica media of a blood vessel wall is modeled as a heterogeneous medium composed of a periodic array of cylindrical smooth muscle cells and a continuous interstitial fluid phase of proteoglycan and collagen fibers. By applying Brinkman's model to describe the behavior of the interstitial flow, we obtain an analytical solution for the transmural flow field through the periodic array of smooth muscle cells in the form of a power series, making it possible to compute the convection of solutes in the interstitial phase. With reaction of solutes at the surface of smooth muscle cell membranes being treated as boundary conditions and the diffusion of species being limited to the interstitial fluid phase only, mass transfer in the media of blood vessel walls is simulated numerically using Cray supercomputers. It is found that the Sherwood number (the dimensionless mass-transfer coefficient) is not only constant for all interior smooth muscle cells but also minimally sensitive to changes of parameters controlling the relative rates of diffusion and convection in the interstitial fluid phase and the reaction on the smooth muscle cell surface. In addition, the Sherwood number is not very sensitive to changes in the volume fraction of smooth muscle cells. A homogeneous, one-dimensional model (effective-medium model) is also developed to predict the bulk concentration profile in the media, based on the equivalent properties of the effective medium derived from the heterogeneous medium. A comparison of results from the one-dimensional model and two-dimensional simulation is quite satisfactory for all practical ranges of parameters. It is also determined that, for a small molecule such as ATP, the mass transfer to the surface of smooth muscle cells is “reaction limited” as assumed previously in the literature, whereas, for a large molecule such as low-density lipoprotein, the mass transfer might not be reaction limited.

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45

Liu, Shuhong, Shengcai Li, Liang Zhang y Yulin Wu. "A mixture model with modified mass transfer expression for cavitating turbulent flow simulation". Engineering Computations 25, n.º 4 (30 de mayo de 2008): 290–304. http://dx.doi.org/10.1108/02644400810874930.

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46

Kadem, S., R. Younsi y A. Lachemet. "Computational analysis of heat and mass transfer during microwave drying of timber". Thermal Science 20, n.º 5 (2016): 1447–55. http://dx.doi.org/10.2298/tsci140109055k.

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The need for improvement in engineering design and process optimization for microwave drying of wood has stimulated the development of computer simulation techniques to predict temperature and moisture history and distribution wood sample. A three-dimensional comprehensive heat and mass transfer model was developed to simulate the free liquid, vapor, and bound water movement including consideration of internal heat generation in microwave drying of yellow poplar specimens. The model was solved using the finite element analysis with FEMLsoftware. The model predictions compared favorably with predicted and experimental solutions. The effect of changes of the most important parameters on the predictions of the model is also presented. The results showed that the variations of irradiation time, microwave power level and sample thickness played an important role in overall drying kinetics.

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47

Li, Long-yuan. "Numerical simulation of mass transfer during the osmotic dehydration of biological tissues". Computational Materials Science 35, n.º 2 (febrero de 2006): 75–83. http://dx.doi.org/10.1016/j.commatsci.2005.03.006.

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48

Rosén, Christer y Christian Trägårdh. "Computer simulations of mass transfer in the concentration boundary layer over ultrafiltration membranes". Journal of Membrane Science 85, n.º 2 (noviembre de 1993): 139–56. http://dx.doi.org/10.1016/0376-7388(93)85163-q.

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49

Ito, Kazuhide, Koki Mitsumune, Kazuki Kuga, Nguyen L. Phuong, Kenji Tani y Kiao Inthavong. "Prediction of convective heat transfer coefficients for the upper respiratory tracts of rat, dog, monkey, and humans". Indoor and Built Environment 26, n.º 6 (1 de agosto de 2016): 828–40. http://dx.doi.org/10.1177/1420326x16662111.

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In vivo studies involving mammal surrogate models for toxicology studies have restrictions related to animal protection and ethics. Computer models, i.e., in silico models, have great potential to contribute towards essential understanding of heat and mass transfer phenomena in respiratory tracts in place of in vivo and in vitro studies. Here, we developed numerical upper airway models of a rat, a dog, a monkey, and two humans by using computed tomography data and then applied computational fluid dynamics analysis. Convective heat transfer coefficients were precisely analysed as a function of breathing airflow rate. Based on the computational fluid dynamics simulation results, the correlations between Nusselt ( Nu) number and the product of the Reynolds ( Re) and Prandtl ( Pr) numbers were summarized. The heat transfer efficiency (order of hc and correlation of Nu and RePr) in the upper airway of the dog seems to match those of the human models. On the other hand, the results for the rat and monkey showed clear differences compared with those of human models. The identified fundamental qualities of convective heat transfer phenomena in airways for rats, dogs, monkeys, and humans, have enabled discussions about quantitative differences of heat and mass transfer efficiency between different animals/species.

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50

Roncallo, Gian Franco, Kelly Johanna Barrios, Luis Guillermo Obregon, Guillermo Eliecer Valencia y Javier Cardenas Gutierrez. "Mass transfer simulation of liquid-liquid extraction systems using an educational software". Contemporary Engineering Sciences 11, n.º 64 (2018): 3159–66. http://dx.doi.org/10.12988/ces.2018.87316.

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