A finite volume Euler calculation of the aerodynamics of transonic airfoil-vortex interactionUnsteady inviscid transonic airfoil-vortex interaction is numerically analyzed by solving the two-dimensional unsteady Euler equations in integral form using a finite volume scheme. The solution procedure is based on an explicit Runge-Kutta time-stepping scheme wherein the spatial terms are central-differenced and a combination of second- and fourth-differences in the flow variables is used to form the numerical dissipation terms to stabilize the scheme. A velocity decomposition technique is applied to alleviate the problem of vortex diffusion by the numerical dissipation terms and to treat the interaction of a Rankine vortex with an airfoil accurately. Results obtained are compared with available numerical data.
Document ID
19870055064
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Damodaran, Murali (NASA Ames Research Center Moffett Field, CA; Cornell University, Ithaca, NY, United States)
Caughey, David A. (Cornell University Ithaca, NY, United States)