Importing & Defining Component Detail
In this example, the detailed model geometry was imported into PowerCASE and then assigned appropriate properties to ready the model for simulation. The animation below demonstrates common components defined in PowerCASE for a detailed underhood simulation of a passenger vehicle (BMW) including:
- Engine block
- Detailed exhaust system
- Hot porous media elements including:
- Radiator
- Condenser
- Oil Cooler
- Real fan geometry
Assigning Fluid Resolution
Because of PowerFLOW's immersive grid technology, the creation of the simulation's fluid grid is totally automatic. In PowerCASE, however, the user has the ability to define the resolution (size of fluid grid cells) in different subdomains. For example, extra (fine) resolution may be required around a vehicle's grille to accurately capture the intricate flow details within that region. The pictures below show several variable resolution regions (VR 8-11) used to define increasing levels of fluid resolution where the model geometry or expected flow behavior is complex. In addition, specific regions may be defined with a rotating reference frame (MRF region shown below) to capture or simulate a rotating fan blade, rather than using an idealized model.
