scholarly journals Second law analysis of laminar flow in a channel filled with saturated porous media: a numerical solution

Entropy ◽  
2005 ◽  
Vol 7 (4) ◽  
pp. 300-307 ◽  
Author(s):  
Kamel Hooman ◽  
Arash Ejlali
Keyword(s):  
Porous Media ◽  
Laminar Flow ◽  
Numerical Solution ◽  
Second Law ◽  
Saturated Porous Media ◽  
Second Law Analysis

Loss Coefficients in Laminar Flows: Indispensable for the Design of Micro Flow Systems

2010 ◽  
Author(s):  
H. Herwig ◽  
B. Schmandt ◽  
M.-F. Uth
Keyword(s):  
Numerical Simulation ◽  
Laminar Flow ◽  
Turbulent Flows ◽  
Head Loss ◽  
Laminar Flows ◽  
Second Law ◽  
Second Law Analysis ◽  
Micro Flow ◽  
Loss Coefficients

The concept of head loss coefficients K for the determination of losses in conduit components is discussed in detail. While so far it has mainly been applied to fully turbulent flows it is extended here to also cover the laminar flow regime. Specific numbers of K can be determined by integration of the entropy generation field (second law analysis) obtained from a numerical simulation. This general approach is discussed and illustrated for various conduit components.

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