1、第一章1-1 kg/m39061543.Vm.0196d1-2 kg/m354.012734.135270 pt1-3 121VtdtVm3/h98.610)280(5)(6122 1-4 1/9366122 1051095011 VpVdpPa1-5 Pas4709.2680.41-6 m2/s31.911-7 (1) m/s17.6605.4dnu1/s5203.y(2) 2dyuLdyuAFMPas3522 10.3.108.14.35duyL(3) Pa35379.2.y1-8 (1) du2(2) 212ydu1-9 (1) hubLAF0(2) 当 时 , 2yhudy0(3)当
2、时 , 所 以h30udy1-10 N2903.13)(12121 AdyFPas Pas967.1 .121-11 drrdrdyurdMsinsin03 cos24)(i2sin2sin2 3403030 tgHtgHtgHtgtg 1-12 m/s6.605.14dum239.2.3LAN3310.410.5.08dyuFkW.62.1.43P1-13 Pas0841.90904m215.38.5.3dLAN.736024.6.149.08. yuFkW.62.73vP1-14 drrrdyduArFdM32023240dA1-15 m2785.01.43LN36 108.4.08.1
3、dyuF1-16 m21.032.43DbAuAudyNm/s9374.018.245.072Aur/min6.396Dn1-17 Pas082.9108.4N75.143.2. dyuAF1-18 由 1-14 的结果得Nm2.791023.9646.9403244 nM1-19 dyuAF0 dyuAF120%7.86015.2012012 1-20 mm3.29105.324.015.89107.324.98.12 rghOH1-21 m7.1)05.216.05.89103.()26.053.1( 3 rghHgm1-22 由 26432Rgh得 23其中 sin1coR则 22i3h
4、g1-23 根据牛顿内摩擦定律 drV由于流速 随半径 的增加而减小,ur即 是负值,为了使 为正值,上式在等dru号右端取负号根据已知条件 rDdr2)4(2在管壁处 则2Dr21当 时 4r4管壁处的阻力 LDAF21411-24 其中 (kg)maFG8.90gG则 N)61.0(8.906.5由 dyuA其中 m20583.129.58.0143DLA1/s6.72.063udy则 Pas310586.0.4895. dyuAF第二章2-1k12.8.091.08913605122 ghpOHgaAPa2-2 Pa.45.54)( evPa928760.19032vap2-3 且 mg
5、hBAe 1.0.h(a) Pa1.)( Pa02359810325eap(b) Pa4.83.09.)( ghBABePa4.1ea(c) Pa128)036()( pABePa3672105ea2-4 设 A 点到下水银面的距离为 h1,B点到上水银面的距离为 h2BOHgOHA phhp212即 04.348.521h 4.21hm305.8.9)1036(42)7.()( 52 gphOHgBA2-5 kg/m3.20.51sstgppasPa6.1208.9)4.0.1()( Hssa2-6 Pa4.30.3612.02 ggpOHHe2-7 21ghphpBA(1) 1230ddB
6、16.0893.08.96.3.89.0195.68 kPa27(2) 32110ghdghdpAB 12.0893.108.96.893.019.3 Pa6275kPa53.16.275aBep2-8 设 cm m m401h2h3h)(312 gpggBHAA 1123)(pHAB 4.0891364.0897.5628.9756(8.91540 kPa37.2-9 (1) Pa.5sin.01singLpBA(2) cm35si8.903i2-10 Pa 6405.89136hgpHm.042hO2-11 102ghpgpOHHa4032hga整理得 )(1321422 hhHggOH)
7、3.016.065.0m86.12-12 )()()( 11234 2hHghghgp OHHa )5.3(8.90)5.(8.9160).2(8.913605 Pa42-13 ghgpHA).(cm85.13.9)1075.136( 482.)(80 hHg2-14 .3()74.(1gddpBA82.3.089.6.0845B2-15 59.0)59.(22 zpgzHgOHBOHA 整理:kPa83.72.8)1360(.59.02 pOHHgBA2-16 设差压计中的工作液体密度为 )()()( 213241 hghphBA )()( 213241 hghhgpBA )48.31(8.
8、9075.80.83.9105. Pa4m065.389105.gp2-17 12301ghdghdpAB 4.28975.05.896.089.102746 Pa182-18 kP82.3)4.01365.012.(8934.05.0 ggpHAa2-19 (1) N98.14hAF(2) N5.1).01.0(890gVG2-20 证明:如书中证明过程。2-21 设油的密度为 N96.174528.3.91083. ABcABghF56481.483.24.2.9021ABcCOHBCACC ghghN.2N12.37BCABCF对 A 点取矩321DBCDBCDABABC yFyFy1.
9、67)324.8(564)8(.4)38.(96.1745 Dm(距 A 点).2-22 设梯形坝矩形部分重量为 ,三角1G形部分重量为 2G(1) (kN)xx3528)4(308.921 (kN)13980AghFcmG175.35280x(2) kNm13F 5.6037)2413(75.08.923221 xkNm稳 固2-23 7.4120582.19)60sin29.(980 hhAghFc 总压力 F 的作用点到 A 点的距离 )45.017.(2845.092.1)06sin(12.45.029. 3 hhAyIcx 由 FG3.整理得 (提示014.25896.83026.5
10、9hh)acbx24解得: m87.0h2-24 图示法: 整理得 hFy3221421y又 所以 211hlA 231l1l于是 m m41.31ly 586.2412y2-25 N.308.915.0)2.83(90AghFcm(距液26.83.195.0)2.183()2.183( yIcxD面)2-26 N5.19328.21)9.045sin83.12(90 AghFcm8.3.12)83.145sin.(6).si.(yIcxD(距液面)或 m(距 C 点)293.145sin.08.22-27 第一种计算方法:设水面高为 m,油面高为 m;486.5H829.1h水的密度为 ,油的密度为12左侧闸门以下水的压力: