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The present study numerically investigates the impact of different Prandtl numbers on thermo-hydraulic transport characteristics of partial porous wavy channel for a laminar flow. The series of simulations are performed for various thicknesses ( S = 0, 0.2, 0.3,  and  0.4 ) of the porous slab at different Prandtl numbers (0.72 ≤  Pr  ≤ 100), Darcy numbers (10 −6 ≤ Da  ≤ 10 −2 ), and Reynolds number ( Re  = 5, 50, 200). Firstly, the variation of the average Nusselt number  Nu avg, Enhancement Ratio  ER , and Performance Factor  PF  has been delineated at constant  Da  for all the geometry configurations,  Re , and range of  Pr . The result shows a significant increment in the  Nu avgand  ER  with increasing  Pr  and  Re  for all geometry configurations. However, the performance factor deteriorates with increasing slab thickness ( S  = 0.2, 0.3, and 0.4) compared to  S  = 0. Later, the effect of the various  Da  is evaluated, which revealed that the  Nu avgdecreases with increasing  Da  values, while the  ER  almost becomes double for  Da  values between 10 −2  to 10 −6  at  S  = 0.4. Streamline contours and temperature field distribution contours are also shown to visualize the physical phenomenon governing fluid flow and heat transfer.

numerical heat transfer, part a: applications

Numerical investigation of thermo-hydraulic transport characteristics of laminar flow through partially filled porous wavy channel: Effect of Prandtl number