Department of Mathematics;
Suzhou University;
Suzhou;
215006;
P R China Department of Mathematics;
Suzhou University;
Suzhou;
215006;
P R China;
circular; cylinder; with; surface; suction; or; blowing; separated; vortex; flow; around; bluff; body; and; its; control; vorticity-velocity; method; preconditioned; conjugate; gradient; method;