Natural convection in a composite fluid-porous cavity by the boundary element method /
The main purpose of this work is to present the use of the boundary element metod BEM for analyzing the convective fluid flow and heat transfer in composite fluid-porous media domain when the fluid is compressible. In our case the flow is modeled by the Brinkman extended Darcy momentum equation (Bri...
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| Main Authors: | , |
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| Format: | Book Chapter |
| Jezik: | English |
| Teme: | |
| Sorodne knjige/članki: | Vsebovano v:
Progress in computational heat and mass transfer |
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| Izvleček: | The main purpose of this work is to present the use of the boundary element metod BEM for analyzing the convective fluid flow and heat transfer in composite fluid-porous media domain when the fluid is compressible. In our case the flow is modeled by the Brinkman extended Darcy momentum equation (Brinkman model) which is commonly used when it is important to satisfy the no-slip boundary condition and when we wish to compare flows in a porous medium with those in pure fluids. The Brinkman equation reduce to the classical Navier Stokes equation for clear fluid when the permeability tends to infinity (porosity is equal to unity), i.e. when the solid matrix in the porous medium disappears and when the permeability is finite, the equation is valid for porous medium. Therefore, it is possible to handle the porous medium free fluid interface problems by changing the properties of the medium in the computational domain appropriately. Our goal is to widen the applicability of the computational model based on the boundary domain integral method - BDIM, which is an extension of the classical BEM. The governing equations are transformed by using the velocity-vorticity variables formulation and therefore the computation scheme is partitioned into the konematic and kinetic part. |
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| Fizični opis: | Str. 327-332. |
| ISBN: | 2743008016 |