Then asymmetrical vortex breakdown flows with M_∞=0.

In the asymmetric flow field of typhoon A(typhoon B),the azimuthal phase of asymmetric gyres due to the linear beta effect is opposite to (the same with) that of .

Now it was generalized to nonaxisymmetric vortices case.

Rich complicated flow problems present in swirling flow inside container,secondary flows,vortex breakdown,to name a few.

The procedure of the vortex breakdown transition at high angle of attack over a delta wing is investigated numerically by solving the unsteady full Navier Stokes equation.

Flow structures and the nature of vortex breakdown over a delta wing with large swept angle are studied by means of a high resolved simulation through Navier Stokes equations solver.

Research of asymmetric vortex characteristic about forebody of slender wing and body;

When a fighter aircraft or missile flies at high angle of attack(AOA),asymmetric vortexes are produced from the forebody and induce strong side force and yawing moment.

In order to study the Reynolds number effects with zonal behaviors on the asymmetric vortex flow over slen- der body,the experimental investigations were carried out in D-4 Low Speed wind tunnel of BUAA and the NF-3 wind tun- nel of Northwest Polytechnic University(NPU)on a 3D pointed tangent ogive/cylinder model with f meness ratio 6 in Reynolds numbers range 0.

Experimental study of Reynolds numbers effect on asymmetric vortices and their aerodynamic characteristics over a slender body;