TY - GEN
T1 - Wing flutter computation using modified spectral volume method for hybrid unstructured mesh
AU - Sawaki, Yuta
AU - Haga, Takanori
AU - Ogino, Yousuke
AU - Sawada, Keisuke
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Toward accurate prediction of transonic wing flutter phenomenon, an implicit Spectral Volume method is extended to employ the ALE formulation for moving grid, and also to adopt unstructured hybrid meshes for improving computational efficiency. As a test problem, unsteady flowfield over an oscillating NACA0012 airfoil is computed using the developed code. The temporal variation of the computed normal force agrees well with the experimental data when viscous effect is taken into account. The developed code is then applied to compute the transonic flutter of AGARD 445.6 wing. It is indicated that the computed flutter speed index agrees well with the experimental data at subsonic speed, but agreement becomes worse when the freestream becomes supersonic particularly when viscous effect is absent. The improved computational efficiency of the present SV method using hybrid unstructured mesh is well demonstrated.
AB - Toward accurate prediction of transonic wing flutter phenomenon, an implicit Spectral Volume method is extended to employ the ALE formulation for moving grid, and also to adopt unstructured hybrid meshes for improving computational efficiency. As a test problem, unsteady flowfield over an oscillating NACA0012 airfoil is computed using the developed code. The temporal variation of the computed normal force agrees well with the experimental data when viscous effect is taken into account. The developed code is then applied to compute the transonic flutter of AGARD 445.6 wing. It is indicated that the computed flutter speed index agrees well with the experimental data at subsonic speed, but agreement becomes worse when the freestream becomes supersonic particularly when viscous effect is absent. The improved computational efficiency of the present SV method using hybrid unstructured mesh is well demonstrated.
UR - http://www.scopus.com/inward/record.url?scp=84982949089&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84982949089&partnerID=8YFLogxK
U2 - 10.2514/6.2015-0768
DO - 10.2514/6.2015-0768
M3 - Conference contribution
AN - SCOPUS:84982949089
SN - 9781624103438
T3 - 53rd AIAA Aerospace Sciences Meeting
BT - 53rd AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 53rd AIAA Aerospace Sciences Meeting, 2015
Y2 - 5 January 2015 through 9 January 2015
ER -