An implicit marching procedure for the treatment of supersonic flow fields using the conservative full potential equationA new aerodynamic prediction technique based on the conservative full potential equation is developed for the treatment of supersonic flow fields. This new technique bridges the gap between simplistic linear theory methods and complex Euler solvers. A novel local density linearization concept and a second order accurate retarded density scheme, both producing the correct artificial viscosity, are introduced in developing an implicit marching scheme for solving the scalar phi. The method produces results that compare well with Euler solvers and requires an order of magnitude less computer time and significantly less computer memory over existing nonlinear codes. The scalar phi formulation can be extended to handle subsonic pockets in the marching direction and also is suitable for developing inverse procedures where the shape corresponding to a prescribed loading is sought.
Document ID
19810053131
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Shankar, V. (Rockwell International Corp. Thousand Oaks, CA, United States)
Chakravarthy, S. (Rockwell International Science Center Thousand Oaks, Calif., United States)