For more information about this meeting, contact Hope Shaffer, Chun Liu.
|Title:||Multiple Numerical Solutions and Stability of Transonic Flows over Airfoils|
|Seminar:||Computational and Applied Mathematics Colloquium|
|Speaker:||Feng Liu, University of California, Irvine (Host: J Xu)|
|Following a general presentation on the numerical simulation of steady and unsteady transonic flows over wings and turbomachinery blade rows by using computational fluid dynamics, I will focus on the findings of multiple numerical solutions for the Transonic Small-Disturbance equation and the Euler equations. Both symmetric and asymmetric solutions are possible for a symmetric airfoil at zero angle of attack within a certain free-stream Mach number range. The stability of the multiple solutions is analyzed using numerical methods. It is found, the symmetric solutions tend to be unstable, while the asymmetric solutions are stable. I will discuss the relevance of such stability analysis to the intrinsic unsteady behavior of transonic buffet over airfoils and wings.|
Room Reservation Information
|Date:||11 / 03 / 2014|
|Time:||02:30pm - 03:30pm|