TY - GEN
T1 - Transonic airfoil buffet at high Reynolds number by using wall-modeled large-eddy simulation
AU - Fukushima, Yuma
AU - Kawai, Soshi
N1 - Funding Information:
This work was supported in part by MEXT as a social and scientific priority issue (Development of Innovative Design and Production Processes that Lead the Way for the Manufacturing Industry in the Near Future) to be tackled by using post-K computer. A part of this research used computational resources of the K computer provided by the RIKEN Advanced Institute for Computational Science (Project ID:hp150254,hp160205,hp170267)
PY - 2017
Y1 - 2017
N2 - In this study, a wall-modeled large-eddy simulation (WMLES) of transonic buffet phenomena over an OAT15A supercritical airfoil at high Reynolds number is conducted. By using the WMLES, the buffet onset is successfully predicted. The small separation near a trailing edge is also accurately estimated with buffet phenomena. The flow physics of buffet flow are investigated from the results. As a results, it is confirmed that there are dominant phenomena in low and high frequency band. By using the phase average operation, large-scale vortical structures with low frequency band and acoustic waves generated from the trailing edge are identified. At last, we propose the new self-sustained oscillation model which depends on the pressure ratio forward and backward of the shock wave. The possibility of the proposed model is confirmed from the results.
AB - In this study, a wall-modeled large-eddy simulation (WMLES) of transonic buffet phenomena over an OAT15A supercritical airfoil at high Reynolds number is conducted. By using the WMLES, the buffet onset is successfully predicted. The small separation near a trailing edge is also accurately estimated with buffet phenomena. The flow physics of buffet flow are investigated from the results. As a results, it is confirmed that there are dominant phenomena in low and high frequency band. By using the phase average operation, large-scale vortical structures with low frequency band and acoustic waves generated from the trailing edge are identified. At last, we propose the new self-sustained oscillation model which depends on the pressure ratio forward and backward of the shock wave. The possibility of the proposed model is confirmed from the results.
UR - http://www.scopus.com/inward/record.url?scp=85033227734&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85033227734&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85033227734
T3 - 10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017
BT - 10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017
PB - International Symposium on Turbulence and Shear Flow Phenomena, TSFP10
T2 - 10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017
Y2 - 6 July 2017 through 9 July 2017
ER -