Use of finite volume schemes for transition simulationThe use of finite-volume methods in the study of spatially and temporally evolving transitional flows over a flat plate is investigated. Schemes are developed with both central and upwind differencing. The compressible Navier-Stokes equations are solved with a Runge-Kutta time stepping scheme. Disturbances are determined using linear theory and superimposed at the inflow boundary. Time accurate integration is then used to allow temporal and spatial disturbance evolution. Characteristic-based boundary conditions are employed. The requirements of using finite-volume algorithms are studied in detail. Special emphasis is placed on difference schemes, grid resolution, and disturbance amplitudes. Moreover, comparisons are made with linear theory for small amplitude disturbances. Both subsonic and supersonic flows are considered, and it is shown that the locations of branch 1 and branch 2 of the neutral stability curve are well predicted, given sufficient resolution.
Document ID
19910034821
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Fenno, Charles C., Jr. (North Carolina State Univ. Raleigh, NC, United States)
Hassan, H. A. (North Carolina State University Raleigh, United States)
Streett, Craig L. (NASA Langley Research Center Hampton, VA, United States)