  Characteristics of Oscillating Flow in a Straight Tube with varying thickness
of porous layer at the wall is studied. Results for two different porous layer
is discussed and compared in terms of Velocity Profile, phase differences and
radial position of maximum velocity over the cross-section. Present problem is
modeled using Navier-Stokes Equation in clear medium at the core of tube while
Darcy-BrinkmannForcheimmer Model is used for the outer porous layer. Solutions
for these equations have been obtained using Finite Volume Method based 3D
unstructured solver. Velocity profile obtained for tube with high permeability
porous layer is the main highlight of results.
