The following book may provide the answers on this and related topics.
Aroon Shenoy, Mikhail Sheremet, Ioan Pop. Convective Flow and Heat Transfer from Wavy Surfaces: Viscous Fluids, Porous Media, and Nanofluids, CRC Press, Taylor & Francis Group, Florida (2016).
The other papers that may interest you are:
M.A. Sheremet, I. Pop, A. Shenoy, Unsteady free convection in a porous open wavy cavity filled with a nanofluid using Buongiorno's mathematical model, International Communications in Heat and Mass Transfer Vol. 67, p. 66 (2015).
M.A. Sheremet, I. Pop, A. Shenoy, Natural convection in a wavy open porous cavity filled with a nanofluid: Tiwari and Das’ nanofluid model, The European Physical Journal Plus Vol. 131, p. 62 (2016).