Modeling Transport Processes in Nonlinear Systems: The Example of Solidification and Convection

1992 ◽  
pp. 205-224 ◽  
Author(s):  
Curtis M. Oldenburg ◽  
Frank J. Spera
Keyword(s):  
Nonlinear Systems ◽  
Transport Processes ◽  
Modeling Transport

scholarly journals STRENGTHENING SPATIAL PERSPECTIVE THROUGH GIS APPLICATIONS IN TRANSPORT MODELING

2022 ◽  
Vol 1 (15) ◽  
pp. 150-154
Author(s):  
Ol'ga Lebedeva ◽  
Zlata Tarasova
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Integrated Approach ◽  
Geographic Information ◽  
Transport Processes ◽  
Transport Modeling ◽  
Spatial Perspective ◽  
Gis Applications ◽  
Technical Developments ◽  
Modeling Transport

The process of transporting passengers and goods takes place in space; therefore, geospatial foundations are considered in transport models. Considering conceptual, methodological and technical developments in this direction, the relevance of an integrated approach becomes obvi-ous. The article deals with geographic information systems and their application in modeling transport processes. Three areas are identified in which the spatial perspective contributes to effective modeling and increasing the reliability of the results obtained. The purpose of the study is to prove the prospects of spatial transport modeling with the integration of geographic information systems

scholarly journals Basics of modeling transport processes

2020 ◽  
Author(s):  
M.V. YArovaya ◽  
L.YU. SHevyrev
Keyword(s):  
Transport Processes ◽  
Modeling Transport

scholarly journals Direct stochastic molecular modelling of transport processes in gases

2021 ◽  
Vol 2056 (1) ◽  
pp. 012003
Author(s):  
V Ya Rudyak ◽  
E V Lezhnev
Keyword(s):  
Thermal Conductivity ◽  
Diffuse Reflection ◽  
Thermal Conductivity Coefficient ◽  
Rarefied Gas ◽  
Transport Coefficients ◽  
High Accuracy ◽  
Transport Processes ◽  
Modeling Transport ◽  
Gas Molecules ◽  
First Time

Abstract The stochastic molecular modeling method (SMM) of transport processes in rarefied gases developed by the authors is systematically discussed in this paper. It is shown that, it is possible to simulate the transport coefficients of rarefied gas with high accuracy, using a relatively small number of molecules. The data of modeling the thermal conductivity coefficient are presented for the first time. The second part of the paper is devoted to the generalization of the SMM method for modeling transport processes in confined conditions. To describe the dynamics of molecules in this case, the splitting of their evolution by processes is used: first, the movement of molecules in the configuration space is simulated, and then their dynamics in the velocity space is imitated. Anisotropy of viscosity and thermal conductivity in nanochannels has been established. The interaction of gas molecules with walls is described by specular or specular-diffuse reflection laws. Gas viscosity can be either greater than in the bulk or less, depending on the law of gas interaction with the channel walls.

scholarly journals Transport Efficiency of Continuous-Time Quantum Walks on Graphs

Entropy ◽  
2021 ◽  
Vol 23 (1) ◽  
pp. 85
Author(s):  
Luca Razzoli ◽  
Matteo G. A. Paris ◽  
Paolo Bordone
Keyword(s):  
Transport Properties ◽  
Continuous Time ◽  
Quantum Walk ◽  
Quantum Walks ◽  
Transport Processes ◽  
Initial State ◽  
Transport Efficiency ◽  
Harvesting Systems ◽  
Time Quantum ◽  
Modeling Transport

Continuous-time quantum walk describes the propagation of a quantum particle (or an excitation) evolving continuously in time on a graph. As such, it provides a natural framework for modeling transport processes, e.g., in light-harvesting systems. In particular, the transport properties strongly depend on the initial state and specific features of the graph under investigation. In this paper, we address the role of graph topology, and investigate the transport properties of graphs with different regularity, symmetry, and connectivity. We neglect disorder and decoherence, and assume a single trap vertex that is accountable for the loss processes. In particular, for each graph, we analytically determine the subspace of states having maximum transport efficiency. Our results provide a set of benchmarks for environment-assisted quantum transport, and suggest that connectivity is a poor indicator for transport efficiency. Indeed, we observe some specific correlations between transport efficiency and connectivity for certain graphs, but, in general, they are uncorrelated.

Modeling transport processes in sterilization-in-place

1992 ◽  
Vol 8 (4) ◽  
pp. 275-284 ◽  
Author(s):  
Paul T. Noble
Keyword(s):  
Transport Processes ◽  
Modeling Transport
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