Unsteady Euler airfoil solutions using unstructured dynamic meshesTwo algorithms for the solution of the time-dependent Euler equations are presented for unsteady aerodynamic analysis of oscillating airfoils. Both algorithms were developed for use on an unstructured grid made up of triangles. The first flow solver involves a Runge-Kutta time-stepping scheme with a finite-volume spatial discretization that reduces to central differencing on a rectangular mesh. The second flow solver involves a modified Euler time-integration scheme with an upwind-biased spatial discretization based on the flux-vector splitting of Van Leer. The paper presents descriptions of the Euler solvers and dynamic mesh algorithm along with results which assess the capability.
Document ID
19890037731
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Batina, John T. (NASA Langley Research Center Hampton, VA, United States)