水力学教程部分答案

精品文档第一章2.5m精品文档放心下载3]又VV1122998.23kg/1m3971.83kg/2m3V2V12.5679m312VV2V10.0679m3谢谢阅读]fxf；fgyzfxfy；fz0gg第二章U精品文档放心下载]p0paghpep0pagh10009.8071.514.7kPaA。谢谢阅读1。精品文档]pAp表0.5gpp0App00p1.5gg490010009.84900Pa表p490098000a93100PaABAAAh1h2h2h1hBBBAρgh1ρgh1ρgh12Bρgh2欢迎下载。精品文档Aρg(h)21ρg(h)21BABρgh3欢迎下载。精品文档4欢迎下载。精品文档o

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A谢谢阅读]PAA10009.8221pgh39200Ncc1123yJ2Dyc

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yAsin4521csin45hl22ycAsin2sin452Tlcos45y)P(yAD5欢迎下载。精品文档TP(yy)(2.94630.99kNDAlcos2cosHH谢谢阅读12Ah1B°h2]1h13

P1b9.8073112sin2sin1h'h3'11.414m13sin3sin1h12

P2b9.822127.74kN2sin2sin2h'2h223sin3sinPP对BP1234.67kNPh'''PPhh1122D62.411.41427.740.94334.67h'D谢谢阅读h'D1.79mUU感谢阅读度ωω。]精品文档放心下载2r22gzCIzhzz2h，I以ra,rb126。aba>b精品文档22b2a2a2b2600hh，12感谢阅读ab]Pb1h1h

hh＋hh1222sin2sinsin油水2油1100046.2kN1hPh4.62kN112油1sin600h'2.69m11hP23.09kN2

2h2sin60水02h0.77m

hPh23油18.48kN1sin600h1.155m3对B点取矩：PPPh'DhDhhh''''112233D1.115m3h'Dsin600=30R谢谢阅读7。精品文档ARαhBPx23gbo29.807Rsinsin22222.066））PzVggR211RsinRcos2229.807sinocos30o22感谢阅读7.996））PP2P222.06627.996223.470）谢谢阅读xzPzoPxAθPBP23.470kN，19.92。谢谢阅读8欢迎下载。精品文档精品文档放心下载]FpxcAxh3.0ghb9.81344.145kN22h1hV[h(h)h]()22sin4528sin313[3(3]()22sin28sin451.1629m3FpzgV10009.811.162911.41kNFpFF44.1452245.595kN22pxpzarctanFFpzarctan11.4144.14514.5px第三章ruu(maxr0)]2ruQ。感谢阅读09。精品文档r]Q()2rdr0umaxrA00谢谢阅读2ur2220.150.0322.12104m3/smax0vQr202ur2max0r20umax0.075m/s2谢谢阅读huupQ）]pup2AAg2ggupp212.6hpuA(AA2gggp2g2/spQd2v0.220.843.85440.102m3/sddA感谢阅读ABpBpBvB两精品文档放心下载ABBh。谢谢阅读w]4d2vAA4dv2BBvAd2Bd2AvB400()14m/s2200zApvp2v2zhAAABBBg2gg2gBw10。精品文档zBzAzA1.0hwpvpv22BzABABg2g6860039200422980729.8070d谢谢阅读1d。精品文档放心下载3

2Q]22d213.140.2g429.8070.139K40.036d0.23.873

(1)41()41谢谢阅读d12qV(K0.950.036(0.15p0.850.0513m3/s51.3L/s谢谢阅读水箱中的水从一扩散短管流到大气中，直径d=100mm，该处绝对压强精品文档放心下载1p=0.5atm，直径d=150mm，水头损失忽略不计，求水头）谢谢阅读12解：11。精品文档qd，精品文档放心下载d12。谢谢阅读]qVd2d4q42.51032vvv/s12V44d3.140.051212214q42.53v2/sVd23.140.02522pvv2222ppp(pp)vv011021aa2221g2gg2gg2gpvpvp5.0931.27398072222p2a10.2398mH221g2gg2g10009.807pahpagp2O2O2Aρ精品文档放心下载精品文档放心下载为。312。精品文档]p2水ghpap2pagh水ppv2ppv2000水2aagg2ggg2g气气气气2gv229.80710000.15

水hvh47.757m/s2水2g1.292qV气气3.140.2247.757d2v1.5m3/s442谢谢阅读QQ。谢谢阅读12]vvv012v0433.410368.076m/sd3.140.02522x0QQ(v)Qvcosv11220QQQcos12谢谢阅读QQQ22Q8.35L/s2QQQ25.05L/s12y感谢阅读F0Q(vsin)0FQvsin1969.12N0感谢阅读13。精品文档感谢阅读截去流量Q=12谢谢阅读1）]xyx感谢阅读FqvV22cosqVv0y0qsinqvvvqV2V1V2212qvsin0.5V110qvV220sinqvV111pvC2pvv=va012精品文档放心下载F1000103cos10003610330F456.5NF456.5N精品文档放心下载dd谢谢阅读12q=1.8m/s感谢阅读3V力]qVd2d2vv1v1244124q41.84q41.8V1.02m/s；vd2.29m/s2V13.141.52d3.141.0222214。精品文档pv2pv2

011022

g2gg2gp2p1v2222v1.022.291031000389.898kPa1222FFFq(vv)p221Vdd22pFp(v2v)1q121442V3.141.523.141.0210F389.8981.8(2.291.02)精品文档放心下载3344F692721.18306225.172286精品文档放心下载F精品文档放心下载0道直径d600mm，下游管道直径d300mm，流量1qVp140kPa，1强0.425m/s，压3]1）用连续性方程计算v和vAB4q44vm/s；v16.02m/sVπdπ0.6πdπ0..32222

212p2v2v2m；m122g2gp2p1gkN/mv2v2122.98121409.81(0.1151.849)2g2g2R谢谢阅读为RX和RY，x和y得p24d22cosFyQ(v2cos15欢迎下载。精品文档p14d2p2p124d22cosFxQ(v2cosv)1FxFyp41dcosq(vV2p24v2coskNd2p2p12cos)=32.27kNvd224221cosqVFF2F2xyF0yFtan1xFFF。谢谢阅读=14m/s，谢谢阅读3hh感谢阅读12]qvvBhBhV1122q1414v2.8m/；vV5h1Bh212h1v2v20