TY - GEN
T1 - RANS and detached-eddy simulation of the NCCR airfoil
AU - Paterson, Eric G.
AU - Baker, Warren J.
AU - Kunz, Robert F.
AU - Peltier, Leonard J.
PY - 2004
Y1 - 2004
N2 - A circulation control foil is studied using incompressible Reynolds-averaged Navier Stokes and detached-eddy simulation CFD methods. It is shown that Reynolds-averaged Navier-Stokes simulations of large jet momentum coefficient cases with a linear Reynolds-stress closure and a blended k-ω/=k-ε turbulence model is able to successfully predict the pressure-distribution trends in comparison to benchmark data. Details of the simulated flow are presented through analysis of the integral forces and moment, velocity field, and turbulent kinetic energy. However, given the lack of data and CFD grid studies these results lack validation. Detached-eddy simulation is undertaken for the unblown case, and demonstrates that the method is capable of resolving turbulent vortex shedding. Statistical and spectral analysis is used to explain the simulation results, however, as with the RANS simulations, lack of data precludes validation for this problem. Nonetheless, results are encouraging and suggest further application of DES to both circulation control studies as well as other trailing-edge applications. Finally, implications for cavitation-free operation of circulation-control devices are discussed.
AB - A circulation control foil is studied using incompressible Reynolds-averaged Navier Stokes and detached-eddy simulation CFD methods. It is shown that Reynolds-averaged Navier-Stokes simulations of large jet momentum coefficient cases with a linear Reynolds-stress closure and a blended k-ω/=k-ε turbulence model is able to successfully predict the pressure-distribution trends in comparison to benchmark data. Details of the simulated flow are presented through analysis of the integral forces and moment, velocity field, and turbulent kinetic energy. However, given the lack of data and CFD grid studies these results lack validation. Detached-eddy simulation is undertaken for the unblown case, and demonstrates that the method is capable of resolving turbulent vortex shedding. Statistical and spectral analysis is used to explain the simulation results, however, as with the RANS simulations, lack of data precludes validation for this problem. Nonetheless, results are encouraging and suggest further application of DES to both circulation control studies as well as other trailing-edge applications. Finally, implications for cavitation-free operation of circulation-control devices are discussed.
UR - http://www.scopus.com/inward/record.url?scp=21444455974&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=21444455974&partnerID=8YFLogxK
U2 - 10.1109/dod_ugc.2004.38
DO - 10.1109/dod_ugc.2004.38
M3 - Conference contribution
AN - SCOPUS:21444455974
SN - 0769522599
SN - 9780769522593
T3 - Proceedings - Department of Defense High Performance Computing Modernization Program Users Group Conference, UGC 2004
SP - 112
EP - 122
BT - Proceedings - Users Group Conference, UGC 2004
PB - IEEE Computer Society
T2 - DoD HPCMP Users Group Conference, UGC 2004
Y2 - 7 June 2004 through 11 July 2004
ER -