Methods for investigating supersonic ground effect in a blowdown wind tunnel
- 221 Downloads
Two methods to experimentally investigate supersonic ground effect problems in a wind tunnel have been examined to determine their relative effectiveness compared to a more realistic, but physically unfeasible, representation of the ground effect by means of a moving ground. Experimental data were compared with the results of numerical simulations. The latter, once validated against pressure data from the wind tunnel, confirmed that generally a symmetry technique is more suitable than an elevated ground approach.
KeywordsSupersonic ground effect Supersonic projectiles Shock/boundary layer interaction Density-sensitive flow visualization CFD
PACS52.35.Tc 42.79.Mt 47.40.Nm 47.40.Ki 47.80.Jk 47.11.-j
Unable to display preview. Download preview PDF.
- 1.Barber T.J., Leonardi E., Archer R.D.: Causes for discrepancies in ground effect analyses. Aeronaut. J. 106(1066), 653–657 (2002)Google Scholar
- 4.Purdon, J.P., Mudford, N.R., Kleine, H.: Supersonic projectiles in the vicinity of solid obstacles. In: Proc. 27th Int. Congr. High-Speed Photography and Photonics, SPIE, Bellingham, vol. 6279 (2007)Google Scholar
- 5.Wieselsberger, C.: Wing Resistance Near the Ground. NACA TM-77 (1922)Google Scholar
- 6.Ben-Dor G.: Shock Reflection Phenomena, 2nd edn. Springer, Berlin (2007)Google Scholar
- 8.Appleby, E.M.: Pressure Effects on Supersonic Projectiles in Close Proximity to a Wall. B.E. thesis, UNSW@ADFA (2006)Google Scholar
- 9.Crocco L., Lees L.: A mixing theory for the interaction between dissipative flows and nearly isentropic streams. J. Aeronaut. Sci. 19, 181–208 (1952)Google Scholar
- 10.Doig, G.C., Barber, T.J., Leonardi, E., Kleine, H., Neely, A.J., Purdon, J.P., Appleby, E.M., Mudford, N.M.: The aerodynamics of a supersonic projectile in ground effect. In: Proc. 26th Int. Symp. on Shock Waves (2008) (in press)Google Scholar
- 11.Spalart, P., Allmaras, S.: A one-equation turbulence model for aerodynamic flows, AIAA Paper 92–0439 (1992)Google Scholar