High Performance Computing and Grid in Asia Pacific Region, International Conference on (1997)
Apr. 28, 1997 to May 2, 1997
Yong Mann Chung , Dept. of Nucl. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Hyung Jin Sung , Dept. of Nucl. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
A direct numerical simulation was performed to investigate the effect of focal wall suction/blowing on the transition in a plane channel flow. The nonlinear Navier-Stokes equations were solved in a spatially-evolving channel flow. A Tollmien-Schlichting wave was superimposed on the laminar channel flow at the inflow. At the outflow, the buffer domain technique was applied to suppress the reflection of outgoing waves. The influence of the local suction/blowing on the linear and nonlinear instabilities of the flow was examined. The nonlinear effects of the initial T-S wave amplitude on the subcritical channel flow were scrutinized.
flow simulation; spatial simulation; nonlinear instability; plane channel flow; direct numerical simulation; focal wall suction; focal wall blowing; flow transition; nonlinear Navier-Stokes equations; spatially-evolving channel flow; Tollmien-Schlichting wave; laminar channel flow; inflow; outflow; buffer domain technique; outgoing wave reflection suppression; initial wave amplitude effect; subcritical channel flow
H. J. Sung and Y. M. Chung, "Spatial simulation of nonlinear instability in plane channel flow," High Performance Computing and Grid in Asia Pacific Region, International Conference on(HPCASIA), Seoul, Korea, 1997, pp. 198.