scholarly journals Pyrolysis in Porous Media: Numerical model and parametric study.

2012 ◽  
Author(s):  
L. Romagnosi ◽  
N. Gascoin ◽  
E. El-Tabach ◽  
C. Strozzi ◽  
I. Fedioun ◽  
...  
Keyword(s):  
Porous Media ◽  
Numerical Model ◽  
Parametric Study

scholarly journals Pyrolysis in porous media: Part 1. Numerical model and parametric study

2013 ◽  
Vol 68 ◽  
pp. 63-73 ◽  
Author(s):  
L. Romagnosi ◽  
N. Gascoin ◽  
E. El-Tabach ◽  
I. Fedioun ◽  
M. Bouchez ◽  
...  
Keyword(s):  
Porous Media ◽  
Numerical Model ◽  
Parametric Study

Numerical Simulation of Insulin Depot Formation and Absorption in Subcutaneous Tissue Modeled as a Homogeneous Anisotropic Porous Media

2021 ◽  
Author(s):  
Michael Zedelmair ◽  
Abhijit Mukherjee
Keyword(s):  
Porous Media ◽  
Numerical Model ◽  
Insulin Pump ◽  
Subcutaneous Tissue ◽  
Saturated Porous Media ◽  
Anisotropic Porous Media ◽  
Effective Option ◽  
Computational Fluid Dynamics Cfd ◽  
Experimental Findings ◽  
Subcutaneous Adipose

Abstract In this study, a numerical model of the insulin depot formation and absorption in the subcutaneous adipose tissue is developed using the commercial Computational Fluid Dynamics (CFD) software. A better understanding of these mechanisms can be helpful in the development of new devices and cannula geometries as well as predicting the concentration of insulin in the blood. The injection method considered in this simulation is by the use of an insulin pump using a rapid acting U100 insulin analogue. The depot formation is analyzed running Bolus injections ranging from 5-15 units of insulin corresponding to 50-150µl. The insulin is injected into the subcutaneous tissue in the abdominal region. The tissue is modeled as a fluid saturated porous media. An anisotropic approach to define the tissue permeability is studied by varying the value of the porosity in parallel and perpendicular direction having an impact on the viscous resistance to the flow. Following recent experimental findings this configuration results in a disk shaped insulin depot. To be able to run the simulation over longer timeframes the depot formation model has been extended implementing the process of absorption of insulin from the depot. The developed model is then used to analyze the formation of the insulin depot in the tissue when using different flow rates and cannula geometries. The numerical model is an effective option to evaluate new cannula designs prior to the manufacturing and testing of prototypes, which are rather time consuming and expensive.

Numerical Model of Complex Porous Media

2002 ◽  
Author(s):  
Andre´ Chambarel ◽  
Herve´ Bolvin
Keyword(s):  
Porous Media ◽  
Numerical Model ◽  
Physical Properties ◽  
Space Distribution ◽  
Partial Differential ◽  
Differential Problem ◽  
Classical Models ◽  
Element Approach ◽  
Statistical Approaches ◽  
Percolation Phenomenon

In complex porous media we often notice a percolation phenomenon [KIR 71] [GRI 89]. Usually these media present discontinuous characteristics and a random space distribution [LET 00] [BIR 95]. There results that the classical models based on the resolution of a partial differential problem become inefficient because we have non-derivable function [MAU 01]. Statistical approaches based on the resolution of partial differential problems pose notably the questions concerning the continuity of the functions representing the physical properties of the medium. In this work we propose to study a numerical model of porous media based on a mixture of 2 components in a percolation context. In practice, the main difficulty is based on the complex physical properties. We present also a model of homogenization. Our numerical model is based on the Finite Element approach.

A parametric study on the isolation of ground‐borne noise and vibrations in a building using a coupled numerical model

2008 ◽  
Vol 123 (5) ◽  
pp. 3260-3260
Author(s):  
Péter Fiala ◽  
Shashank Gupta ◽  
Geert Degrande ◽  
Fülöp Augusztinovicz
Keyword(s):  
Numerical Model ◽  
Parametric Study ◽  
Coupled Numerical Model
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