Numerical modeling of an impinging jet in crossflow
Abstract
The paper deals with the calculations of round compressible turbulent impinging jets in cross flows. A twodimensional numerical method utilizing a finitevolume code is described. It is shown that the method makes it possible to replicate the effects of parameters such as jet pressure ratio, jet height, jet/cross flow velocity ratio, and groundplane conditions on the resultant ground vortex. The output demonstrates that the vortex core and maximum penetration points are coincident with groundplane minimum and maximum pressure coefficient points, respectively. Vortex geometry is also accurately predicted by the numerical modeling, along with the correct trend of increasing vortex penetration with increasing effective velocity ratio. The correct trend regarding moving groundplane operation and the correct low jet pressure ratio effects are also indicated by the modeling.
 Publication:

AIAA, SAE, ASME, and ASEE, 26th Joint Propulsion Conference
 Pub Date:
 July 1990
 Bibcode:
 1990jpof.confT....B
 Keywords:

 Computational Fluid Dynamics;
 Cross Flow;
 Jet Impingement;
 KEpsilon Turbulence Model;
 Two Dimensional Models;
 Aircraft Design;
 Free Jets;
 Pressure Distribution;
 V/Stol Aircraft;
 Fluid Mechanics and Heat Transfer