This unsteady simulation involves a moving body and demonstrates the use of chimera and 6-DOF modeling features in CFD-FASTRAN. The flow has a free stream Mach number of 0.5. The freestream temperature and pressure are 101325 Pa and 288.16K, respectively.
This unsteady simulation involves a moving body and demonstrates the useof chimera and 6-DOF modeling features in CFD-FASTRAN. The flow has a free stream Mach number of 2.0 at AOA of 5 deg. The free-stream temperature and pressure are 101325Pa and 288.16K, respectively. The simulation includes two separate 6DOF motion models. 6DOF model # 1 governs the motion of the second stage (payload vehicle), and 6DOFmodel # 2 governs the motion of the first stage (booster vehicle). The payload vehicle has a rocket nozzle that is modeled with a time dependent inlet condition simulating rocket ignition. First a steady-state solution of the combined vehicle flying at 5 deg. angle of attack is obtained. Then at time t=0, the rocket motor ignites and pressure builds up between the stages resulting in the separation of the two vehicles. The thrust integration option is employed to account for the thrust component at the nozzle chamber.
The objective of this tutorial is to understand the steps and methodology for creating unstructured grids. A simple 2-D plate (no thickness) is created and an unstructured grid is generated for it.
