Entropy Generation in a Couple Stress Fluid Flow Through a Vertical Channel Filled with Saturated Porous Media
Abstract
:1. Introduction
2. Mathematical Model
3. Entropy Analysis
4. Results and Discussion
4.1. Variation of Parameters on Velocity Profile
4.2. Variation of Parameters on Temperature Profile
4.3. Variation of Parameters on Skin Friction
4.4. Variation of Parameters on Nusselt Number
4.4. Effect of Various Parameters on Entropy Generation Profiles
4.5. Effect of Different Parameters on Bejan Number
5. Conclusions
- The velocity profiles in general are parabolic in nature. Increases in Gr, Pr and A increase the velocity profile, while increases in M, S and λ decrease the velocity profile.
- An increase in Gr, Pr, Ec and A increases the temperature profile, while increases in S, M and λ decrease the temperature profile.
- An increase in M verses S decreases the skin friction, while an increase in A versus Gr increases the skin friction.
- The Nusselt number increases with increasing A versus S, while it decreases with an increase in M versus S.
- Entropy generation increases with increases in Gr, BrΩ−1 and A, while it decreases with an increase in S. As M increases, its decreases at both walls, but increases in the centre of the channel.
- Increases in Gr, A and BrΩ−1 decrease the Bejan number across the flow, while an increase in λ increases the Bejan number across the flow. Increases in M and S; increase the Bejan number at both walls, but at the centre of the channel, the Bejan number decreases.
Conflicts of Interest
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Makinde, O.D.; Eegunjobi, A.S. Entropy Generation in a Couple Stress Fluid Flow Through a Vertical Channel Filled with Saturated Porous Media. Entropy 2013, 15, 4589-4606. https://doi.org/10.3390/e15114589
Makinde OD, Eegunjobi AS. Entropy Generation in a Couple Stress Fluid Flow Through a Vertical Channel Filled with Saturated Porous Media. Entropy. 2013; 15(11):4589-4606. https://doi.org/10.3390/e15114589
Chicago/Turabian StyleMakinde, Oluwole Daniel, and Adetayo Samuel Eegunjobi. 2013. "Entropy Generation in a Couple Stress Fluid Flow Through a Vertical Channel Filled with Saturated Porous Media" Entropy 15, no. 11: 4589-4606. https://doi.org/10.3390/e15114589