Study of three-dimensional effects on vortex breakdownThe incompressible axisymmetric steady Navier-Stokes equations in primitive variables are used to simulate vortex breakdown. The equations, discretized using a second-order, central-difference scheme, are linearized and then solved using an exact LU decomposition, Gaussian elimination, and Newton iteration. Solutions are presented for Reynolds numbers, based on vortex-core radius, as high as 1500. An attempt to study the stability of the axisymmetric solutions against three-dimensional perturbations is discussed.
Salas, M. D. (NASA Langley Research Center Hampton, VA, United States)
Kuruvila, G. (Vigyan Research Associates, Inc. Hampton, VA, United States)