Simulation is not starting

Dear @jeff.dietiker
I am unable to start the 2D TFM simulation after increasing the grid size due to an error related to custom drag. Error from time_step.f:196
DT < DT_MIN. Recovery not possible!
Could you please assist me in finding a solution to the following issue: “DT < DT_MIN.”? I have already checked the mesh, boundary conditions, model setup, and Ideal Gas Law, but I am still unable to determine the exact cause of the error. which is common in most cases. (350.1 KB)

I get the same error as in Simualtion is getting error - #2 by jeff.dietiker so please fix that one fist and see if it still fails after that.