Computational Simulation of Dynamic Stall on the NLR 7301 Airfoil
MetadataShow full item record
The dynamic stall behavior of the supercritical NLR 7301 airfoil is analyzed with a 2-D thin-layer Navier-Stokes code. The code solves the compressible Reynolds-averaged Navier- Stokes equations with an upwind biased numerical scheme in combination with the Baldwin}Lomax or the Baldwin}Barth turbulence models. The effect of boundary layer transition is incorporated using the transition length model of Gostelow et al. The transition onset location is determined with Michel's formula or it can be specified as an input parameter. The two turbulence models yield significantly different steady-state lift coefficients at incidences greater than 8 degrees. The use of the one-equation Baldwin}Barth model together with the Gostelow transition model is found to give substantially better agreement with the experimental data of McCroskey et al. than the Baldwin}Lomax model. Also, the unsteady computations are strongly affected by the choice of the turbulence model. The Baldwin}Barth model predicts the lift hysteresis loops consistently better than the algebraic turbulence model. However, the one-equation model improves the prediction of the moment hysteresis loops only for one test case.
The article of record as published may be found at http://dx.doi.org/10.1006/jfls.2000.0299
Showing items related by title, author, creator and subject.
Wang, Z.; Chang, C.-P. (2007);Atmospheric general circulation model (AGCM) simulations are carried out to test a hypothesis (Chang et al. 2005) for the asymmetric monsoon transition in which the maximum convection marches gradually from the Asian ...
Reese, W.; May, L.F. (American Physical Society, 1967-10-10);High-resolution measurements of the heat capacity in the immediate neighborhood of the ferroelectric transition in KH2P04 are reported. The heat-capacity anomaly is interpreted as a second-order, or nearly second-order ...
Enablers and obstacles to democratic consolidation and civil-military relations reform: a comparative analysis of Argentina and Guatemala Fetting, Nathaniel C. (Monterey, California: Naval Postgraduate School, 2014-03);Argentina and Guatemala are separated by more than 3,000 miles, and their societies are in many ways dissimilar. Yet they share similarities in the undermining of democracy throughout their histories. Both countries were ...