3-D Modeling of Rocket Motor Plume Effects Through Adaptive Viscous Cartesian Analysis

We propose to utilize the combination of a projection-based viscous cartesian grid approach with an anisotropic grid generation and adaptive refinement scheme to create an innovative missile-plume aerothermal flowfield simulation tool. The viscous adaptiveCartesian approach will enable automatic, efficient and accurate solutions of missile plume shapes and plume phenomenology at all operating conditions. The proposed work will leverage the grid generation and flow solver technology developed at CFDRC in theCFD-VisCart and CFD-FASTRAN simulation tools. The proposed methodology will create a robust and easy to use 3-D flowfield modeling tool with unprecedented levels of simulation accuracy and automation. The innovation makes 3-D missile-plume simulationsfeasible for parametric evaluation and database generation at the systems analysis level. The Phase I work will demonstrate the feasibility of an automated, projection based viscous-capable cartesian grid generation and solution-adaptive grid refinement methodology for 3-D missile-plume interaction simulation. Sample analyses will demonstratefeasibility of parametric systems analysis with script based batch operation. The work will continue in Phase II with the full integration of the solution adaptive refinement module into the flow solver, improvements to the polyhedral flow solver forgeneralized finite rate chemistry with particulate phase effects, and extended validation and verification of the simulation system. The plume flowfield prediction models have applications across all DoD and many commercial programs requiring propulsionsystem plume modeling. The developed automatic viscous adaptive grid technology will be applicable to most CFD applications. These technologies will be incorporated into the CFD-FASTRAN commercial flow solver and will be available for a large number ofexisting users in many government organizations and private enterprises.