Ap=11002a,→1=20.2m/S 假设取N=1,V=1Bh=l1D2/8 求出D=0.3316,取D=034m,B=0.085m 1000/3600 19.22m/s 0.342/8 13.89×0.085 8.035=0784×8035=631 19.22×0.1 可以满足要求。假设取 求出 D=0.3316，取D=0.34m, B=0.085m 1100 , 20.2 / i  =  = p Pa u m s 2 1, / 8 N V u Bh u D = = =  S i i 2 1000/ 3600 19.22 / 0.34 / 8 u m s i = = 13.89 0.085 8.035 0.784 8.035 6.3 19.22 0.1 d m C    =  =  =  可以满足要求