Question

3. The fomula for flow through a randomly packed bed of spheres is given by Ergun's equation ε3d Where: Ap is the pressure drop across the bed, H is the length of the bed d is the equivalent spherical diameter of the packing, p is the density of fluid, μ is the dynamic viscosity of the fluid. uo is the superficial velocity e is the void fraction of the bed Using dimensional analysis (MLT), show that this equation is either valid or invalid in any system of units. Explain.

Answer 1