Interaction of a decaying vortex ring with a rotational background flow bounded by a solid wallThe interaction between a vortex ring of finite strength and an axisymmetric rotational background flow bounded by a solid wall is studied by a singular perturbation method. The analysis is carried out by combining a composite solution of a vortex ring and an unsteady Navier-Stokes solution for the background rotational flow. Using the method of averaging, numerical scheme is developed to obtain a Navier-Stokes solution in which the grid and time-step sizes depend solely on the length and velocity scales of the background flow. Numerical results are presented to illustrate the separation of the boundary layer on a solid wall and its interaction with the vortex ring.
Document ID
19870055126
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ishii, K. (Tokyo, University Japan)
Liu, C. H. (NASA Langley Research Center Hampton, VA, United States)