3-13u4=2.22m/s 3-14u=3.325m/s 3-16水从A流向B,h=4.15m 3-17hx=0.24m,水从2断面流向1断面,(pp)/y=4.23m油柱高 3-18p=43.3KN/m2,p=82.5KV/m,p2 3-19解三次方程求得V=20.7m/s,h=1.44m 3-20 √h+b)/H 3-21Q=3.785升/秒,不变 号 2 45 .45 2-23功率N=59.9KW 3-24孔口出流流量公式q=uA√2H=49×10-m3/s 3-25v=8.76r PH=-34KN/m 3-27Rx=384KN 3-28Rx=1959.2N,R=751.5N,R=2.1KN 3-29Fx=144.5N,F=152.6N 3-30R=153KN 3-33R=456N,θ=30° 3-34(1)R=5.0KN,(2)R=0.714KN 35(1)T=5.17Nm,(2)n=219.4rpm(3)p=29.4焦耳 3-36Rx=1241KN,R=1750KN 3-37(1)无线变形,有角变形;(2)有旋流 3-39(1)有势流φ=-X -4xy +CI (2)申存在,中=xy-2y2+2x2+c2 3-40(1)无旋;(2)中=2axy+c;(3)正交 3-41(1)q=0.747m3/(sm);(2)P=2049.2N/m 3-42(1)a=-0.12,b=0,(2)△p=4560.2N/m2 3-43q=20m2/(sm) 3-44pn=1.934N/m2,pa=-2.342Nm tx=tm=0.069N/m2,T=Ta=0.018N/m2,tx=ta=-0.216N/m23-13 uA=2.22m/s 3-14 uC=3.325m/s 3-16 水从 A 流向 B, hW A-B=4.15m 3-17hW 1-2=-0.24m,水从 2 断面流向 1 断面,(p1-p2)/  =4.23m 油柱高 3-18 pA=43.3KN/m2 , pB=82.5KN/m2 , pc=0 3-19 解三次方程求得 VC=20.7m/s ,hC=1.44m 3-20 (h b) H A A 1 2 = + 3-21 Q=3.785 升/秒,不变 3-22 序号 1 2 3 4 单位位能(m) 0 0 2 -5.91 单位压能(m) 0 -4.545 -7 0 单位动能(m) 0 0.455 0.455 0.455 2- 23 功率 N=59.9KW 3- 24 孔口出流流量公式 Q=μA 2gH 4.9 10 m /s −4 3 =  3-25 vc=8.76m/s ,pB=-34KN/m2 3-26 Q=5.98m3 /s 3-27 RX=384KN 3-28 RX=1959.2N, RY=751.5N, R=2.1KN 3-29 FX=144.5N ,FY=152.6N 3-30 R=153KN 3-33 RX=456N, θ=30° 3-34 (1)R=5.0KN,(2)R=0.714KN 3-35 (1)T=5.17N m,(2)n=219.4rpm (3)p=29.4 焦耳 3-36 RX=1241KN, RY=1750KN 3-37 (1)无线变形, 有角变形;(2)有旋流 3-38 (1)ωz= n 1 n 0 m y 2 n −   − ,有旋流, ωX=ωY=0 (2)εXY= n 1 n 0 m y 2 n −   εYZ=εZX=0 3-39 (1)有势流 φ= 1 2 2 y 4xy c 2 1 x 2 1 − − + (2)ψ存在, ψ=xy-2y2 +2x2 +c2 3-40 (1)无旋; (2) φ=-2axy+c; (3)正交 3-41 (1)q=0.747m3 /(s m); (2)P=2049.2N/m 3-42 (1) a=-0.12, b=0, (2)Δp=4560.2N/m2 3-43 qAB=-20m2 /(s m),qOA=32m2 /s 3-44 pYY=-1.934N/m2 , pZZ=-2.342N/m2 τXY=τYX=0.069N/m2 ,τYZ=τZY=0.018N/m2 ,τXZ=τZX=-0.216N/m2 . 3-45(1)pXX=p-2μA,pYY=p+2μA;(2)p=p0- ( ) 2 2 2 2 x y A +  3-46 μ=μx= y h U