Analytical Solutions of Fluid Flows Through Composite Channels

2001 ◽  
Vol 4 (2) ◽  
pp. 16 ◽  
Author(s):  
A. K. Al-Hadhrami ◽  
Lionel Elliott ◽  
Derek B. Ingham ◽  
X. Wen
Keyword(s):  
Analytical Solutions ◽  
Fluid Flows ◽  
Composite Channels

Entropy Generation Analysis of Microchannel Heat

2009 ◽  
Author(s):  
Jaehoon Jung ◽  
Sung Jin Kim
Keyword(s):  
Heat Transfer ◽  
Entropy Generation ◽  
Analytical Solutions ◽  
Fluid Flows ◽  
Equation Model ◽  
Heat Sinks ◽  
Generation Rate ◽  
Entropy Generation Rate ◽  
Microchannel Heat Sinks ◽  
Fin Thickness

Analytical solutions for entropy generation rate distribution associated with heat transfer and fluid friction in microchannel heat sinks are examined. Microchannel heat sinks are modeled as a porous medium through which fluid flows. Analytical solutions are obtained by using velocity and temperature distributions of microchannel heat sinks, which are based on the modified Darcy model for fluid flow and the two-equation model for heat transfer. Using the analytical solution, the entropy generation of heat sinks was obtained. The effects of height, channel width, and fin thickness on the entropy generation rate were studied and thermal optimization of heat sink was performed.

Fluid Flows Through Some Geological Discontinuities

2005 ◽  
Vol 73 (1) ◽  
pp. 34-40 ◽  
Author(s):  
D. B. Ingham ◽  
A. K. Al-Hadhrami ◽  
L. Elliott ◽  
X. Wen
Keyword(s):  
Composite Material ◽  
Fluid Flow ◽  
Physical Parameter ◽  
Fluid Flows ◽  
Numerical Techniques ◽  
Composite Channel ◽  
Composite Channels ◽  
Geological Discontinuities ◽  
Flow Through ◽  
Parameter Ranges

In this paper the fluid flow through some composite channels has been investigated in the physical parameter ranges appropriate to some flows in geological applications. In particular, we have considered the fluid flow through a composite channel that has undergone a vertical fracture. The vertical connecting channel is also composed of a composite material. In such physical situations, the materials undergo several orders of magnitude changes in their Darcy numbers. This results in very large changes in the pressure in the vicinity of the interfaces between these materials. Therefore it is necessary to develop mathematical and numerical techniques to deal with such situations and in this paper an approach is presented.

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