Problem 6 Fluidized beds, in which a fluid flows through a matrix of particles, are used for a variety of purposes such as enhancing chemical reactions, combustion, or freezing of a material. The pressure drop Ap for the fluid flowing through the bed depends on the diameter of the particles D, the flow length of the bed I, and the velocity V, density p, and viscosity u of the fluid. a) Develop a suitable set of pi terms for this problem using Buckingham Pi Theorem. [10 points] b) Discuss the dimensionless groups developed in part a' [6 points]