...AACB-A......BCAB+BB-801000A......Lref=1mLref=1mUref=300msUref=300msref=1.225kgm3ref=1.225kgm3......u（xy）=U0（1eycosx）v（xy）=U0eysinxv（xy）=U0eysinxU0=200msU0=200msL=5mH=1.2........N-SN-SNavier-Stokes