Chemical-kinetic Model for Mars Atmosphere Re-entry Applications

The shock layer flow over a blunt body entering a planetary atmosphere at a hypersonic speed will dissociate and partially ionize. A reliable prediction of the flow-field for such application requires a chemical-kinetic model. For Mars atmosphere, the five species Park'94 is considered [1]. The dissociation of CO2 is producing C, CO, CO2, O and O2.

CFD-FASTRAN-GUI Scripting for Text-Based Model Setup

CFD-FASTRAN-GUI can now be operated via a Python Script in Version 2006, like CFD-ACE-GUI. GUI scripting (and the DTF command) are intended to be used in place of the AT file, which has now been eliminated. The AT file has been the root cause of a lot of confusion and unexpected problems, because it was impossible to keep the state of the AT file consistent with the state of the GUI.

Motion Model Dependencies in CFD-FASTRAN

Moving-body models available in CFD-FASTRAN are highly suited to simulate complex prescribed and six-degree-of-freedom (6DOF) motions of rigid bodies. In many engineering problems, this translates to multiple bodies moving relative to one another.

Axisymmetric 2D Convergent-Divergent Boattail Nozzle Simulation Using CFD-FASTRAN

The NASA D-1.22-L boattail nozzle configuration was obtained from the MADIC (Multidisciplinary and Design Industrial Consortium) program. The geometry definition and the flow conditions are documented in NASA TP 1766 [1]. This user tip presents a validation of numerical methods against experimental data.

Parametric Studies with CFD-FASTRAN

CFD-FASTRAN-GUI has a new "Parametric Set Up" template that allows the user to run parametric cases. Most of the text input fields including boundary conditions, properties, and solver control parameters are available for a parametric run. This will allow the users to submit the parametric cases in one shot and post-process the results later on.