Simulation at zero wind speed situation

Using SimScale Fluid Flow / CFD
1

Dear team,
I am new in CFD with weak mathematical background. I have a basic query.
Is CFD simulation (Reynolds-averaged non-hydrostatic Navier-Stokes) possible at zero wind speed (u=0) situation?

Thank you …

2

Hi, and welcome to the forum!

In principle I would say that yes, this is possible. But, why would it make sense to have no flow? There must be another action that drives the movement of fluid, for example:

  • Pressure difference
  • Buoyancy
  • Momentum sources, such as fans, blowers, impellers, etc.
3

Thank you for your reply…
I understand what you point. But here I specifically want to know if the model can be initiated with zero wind speed (U=0)

5

Hey there!

Is your question still relevant?

Just for reference, yes you can initialize the flow field to zero velocity, that is, for the initial conditions. Of course that due to the boundary conditions this will change as the solver iterates towards the steady-state solution. In fact, zero initial velocity is the default setup for all simulations.