A time-split finite-volume algorithm for three-dimensional flow-field simulationA general finite-volume algorithm is developed for solving three-dimensional, time-dependent, compressible Navier-Stokes equations for high Reynolds number flows over an arbitrary geometry. This algorithm adapts MacCormack's (1982) explicit-implicit scheme to a time-split, three-dimensional finite-volume concept in a general coordinate system. It is shown that the thin-layer approximation in all three spatial directions significantly reduces the evaluation of viscous terms and allows the algorithm to solve more complicated geometries with all boundaries in two or all three directions. The calculated results using this method are found to be in good agreement with the experimental measurements of a blunt-fin induced shock wave and boundary-layer interaction problems. Observations of the existence of peak pressure, primary horseshoe and secondary vortices, and reversed supersonic zones show that computational fluid dynamics can effectively supplement the wind tunnel tests for aerodynamic design as well as for understanding basic fluid dynamics.
Document ID
19830058182
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hung, C. M. (NASA Ames Research Center Moffett Field, CA, United States)
Kordulla, W. (NASA Ames Research Center Computational Fluid Dynamics Branch, Moffett Field, CA, United States)