TFM 2D fluizied bed, vibration and microjet effect question

[gq0502]

I should quote the following topic here.

Vibration UDF for TFM model

I am trying to give a sinusoidal vibrational effect on gas phase and solid phase in a fluidized bed(2D TFM). There will be a displacement due to vibration, displacement, d = A * sin(2 * pi * f * time) A: amplitude f: frequency and the second derivative of vibrational displacement will be vibrational acceleration. vibrational acceleration, a = 4 * pi^2 * f^2 * A * sin(2 * pi * f * time) Using this vibrational acceleration, I want to modify the gravity term in the momentum equation for both…