For a packed bed, the Ergun equation provides a relationship between the pressure drop per unit length and the properties of the bed, = 150 ( 0 2 ) (1 ) 2 3 + 7 4 ( 0 2 ) 1 3 where is the fluid viscosity, 0 is the superficial velocity, is the particle diameter, is the fluid density, and is the void fraction of the bed. Consider a 1.5 m long packed bed containing 5 cm diameter particles. Fluid of density 2 g/cm3 and viscosity 1 cP flows through this bed at a superficial velocity of 0.1 m/s. The pressure drop in the bed is 416 Pa. Write a MATLAB program to find the void fraction using the Secant Method.

using SECANT method. and past the matlab code