Outlet transient temperature in dem

how i can change the temperature with time at outlet in dem approach?

The new release of mfix (19.3, released today) has some examples which have UDFs for simulating time dependent boundary conditions. We call it keyframes where user specifies the BC data in the form of table for example. Following are the “time-dependent” keyframe tutorials in 19.3 which will help in simulating what you need:

  1. Rotating drum with varying drum velocity
  2. Conveyor belts with varying belt velocities
  3. Pulsating inlet
  4. Screw conveyor with varying screw velocity

It would help you in simulating what you need.