Week 8- Moving zones approach in Fluent
Aim --> Moving zones approach in Fluent
- What are the approaches by which you would model moving zones?
--> following are the approaches by which we can model moving zones.
- Moving refference frame
A Moving Reference Frame (MRF) is a relatively simple, robust, and efficient steady-state, Computational Fluid Dynamics (CFD) modeling technique to simulate rotating machinery.
- moving mesh motion
--> The moving mesh technique is a transient (unsteady) simulation procedure which typically results in extremely long runtimes. The moving mesh motion approach can can deal with strong interactions between the moving volume and the surrounding stationary volumes. However, in practice the moving mesh technique often has robustness problems due its dependence on intersection calculations between the stationary and rotating volumes.
Simulation Setup
- Turbulence model --> k-e relizable with enhanced wall functions.
- pressure based steady-state solver (planner 2D)
- Material properties --> Air (fluid)
- cell-zones (rotating refferencing frame) (angular velocity = 250 rad/s)
- Airfoil Boundary condition
- Solution Controls
scheme --> coupled
flow courant no. = 10
Hybrid initialization
Turbulence quantities --> 2nd order upwind schemes
Pressure contour
Velocity contours
conclusion
- The MRF approach is modelled and simulation is successfully run on Ansys fluent.