流体力学_第二版_景思睿_张也影_课后答案[1-8章].khda(1)

111.3300mm200mm210mm,900kg/m3,=0.260x10-3m2/s=10rad/s3331221212210.2100.39000.260103.140.882Nm20.2100.200inininout-inininminoutinoutinDDUMF,FS,U,SDL,DD2DDDLMDL2D-DD-D21.4Cy0.048Pas4mm2()cyyu4maxum/s1y2duc=0-y-y=0y=dy2uy=2y=22c22444164maxc(-)u=cm/syxu322192(N/m)2322160,0.048192N/m410192(N/m)2duc=µ=µ-ydycyµcy,µ41)2U=39mm/s,0.62PasG2UµdLDd2dµUL=GDdLDdG1.9G=190N,d=152mm,D=152.02mm,L=200mm.22253332()190(152.02152)10U220.623.1415210200103.2110(m/s)GDdµdL3333()190(152.02152)102239103.1415210200100.51(Pas)GDdµUdL(1)(2)63m112256121213.4101.70100.2pV=pVVp=pV513.4010E=pPa621.7010E=pPa71.151.1411221.45612121121112221112212122111121211116221113.4103.24100.23.2410(40273)(3.40kkkkkkkk22kpV=pVVp=pVppp=pTpTpppp===TpTpppppT=Tp1.411.45)596()10k86621.43.24104.5410()pPa5511.43.40104.7610()pPa12.4h,k.0kh020000222000002222phhdpgkhgdhdpkhgdhggpkhkhkkgpkhh:pgzpghpmAhh1h3h2Bp2.10h=500mm,h1=200mm,h2=250mm,h3=150mm,B42.4510mpPa313600/kgm3843/kgm113211234342.45101109.80.5000.200136009.80.2000.2508439.80.1502.7410()mmpghhghghghpppghhghhghPa:2.14b=1.5m,=60H=1.5m,a=20cmQ:2sinCHHFghSgb3112sin2sin2sinsin23sinXCDCCHbIHyyHHySbHHQay34cossin22sin3sincossin1.51.521.51109.81.50.202sin603sin601.50.20cos60sin602.6810DHQaFyaHHHgbaQHaPaHQay2.45101109.80.5000.200136009.80.2000.2508439.80.150ppghhghhghmppghhghhghm2.45101109.80.5000.20026mA2m2.203m()A?ACABFVFHRWACAB212121,41,44WRbgFgRbFgRb11AC1215R31112515XCDCCbRIyyySbRWF2F1FHFvR341215R12RoxyxOx’,y’)5125222222235510=1010009.83=2.9410()14(8)3.2810()410(8)10(8)109.834.4010()HVHVFFgRbgbNFFWRbggRbgbNFFFgbN2212154324441632383(8)VVRyRRFxWFRRRWFRRxFWF2F1FHFvR341215R12Roxy100.89841.98HVFxtgFyAAyyxlha2.28Ul200mmh=100mmap=p(x,y)ppdpdxdyadxgdyxydp=01()01010gappgypax21543244RRFxWFRR44WFR32FxWFFxWF3,aadydxyxcggx=0y=hchhxgayx=ly=0201009.84.9/200alhghagmslyxlhayxlhaga21009.84.9/200ahglhagmsl13.9a22,,u=ax+tv=aytw=0:(1)22222212241ln()ln()()()()dxdy=axtaytaxt=ay+tcaxtayt=caxyaxytt=c22412()axyax+ytt=cz=c22dx=ax+tdtdy=-ay-tdt12213()1()2-at-at-at2-at-at2-at-at2atdxax=tdtdxdeaex=etxe=etdtdtxe=etdt+cx=at+2at+2+cea2223()1(22)2atat2atat2atat2at2-atdy=aytdtdyde-aey=-teye=teye=tedt+cdtdtyatat++cea2213222331(22)1(22)atatx=at+at++ceay=atat++ceaz=c3-1615520.0120.012xt,y=t,z=x=82t=10253u=yzt,u=yzt,w=0x=825582820.0112.9(s)0.01tt112253530.0112.90.0112.90.135()22220.135()022x22yzdxa=msdtamsa-at-at2xe=etdt+c-at-at2x=at+2at+2+cexe=etdt+c22(2)2222xyuuua=+u+v=yz+xzttxyvvva=+u+v=xz+yzttxyt=102,5,32222225323101815(ms)2353104506(ms)0xyzaaa3-17a,b,c2tttkkkx=ae,y=be,z=ce22221111ttkkttkkttkkxx=aeu==ae=xtkkyy=bev==ae=ytkkzz=cew==ce=ztkk2110uvwV=++=++=xyzkkk2302ijkV==xyzyzxkkk4000uuuwvw+=,+=,+=yxzxyx21(3)AEB’BA0.0337m3ABBCCDEF0.15m0.15m0.15m(2)zCC’FDC0.150.1511/20.150.1510.0337m34.1(1),ABCD;,AEB’C’FDA.121200,3.5333cshVndAQQxQUhQcdxchhchUhUcUyx122h1F,00111122VDdFyx.45VVV0CSVndAm2222110444DVdVmmVDd(1)22sin4544xcsFuVndAFDVVdVVmV(2)222.2221sin45420.10.0210005142321()FDdVN22V324.15:,Rh0rCSVndAVrVr122122220,240.140.00625()2880.200rrAVAVADARhDDhmRRjVrVCV060F122221rVrVxjVrVCV060F122221rVrVxx12212223cos601cos601cos604100030150.1001cos607.95104rxrcsrrrrrjcFVVndAFVAVVAVFVAVVDNa)2212133,cos30,0Rcos304100.20017cos30110600.196rrTrVrVmmQVVVTVQNmTrV200Rmm30rVb223,cos30(cos30)cos300.1817cos300.26.1141010000.2606.116058.4/min2rrrTRVQVVRTRVRQTVRQRrVrcos30o2VUR100030150.1001cos607.9510100030150.1001cos607.9510312P1,T1,V1P2,T2,V24.22222121212122pVVmhhQWhhCTT22212122334221257511.004103452881810228.0210()pVVWmCTTQW00()2()2()00()0uvVxyuvdyfxaxdyfxaxyfxxyvfxv2axy=1+1+10uvwxyzuvwxyzuvwxyz15.1320km/h15C,101.3kPa3m1/20121400kPa15C315C(1)33ReRe203206.4010/1.7810/pmpmpppmmppmpmmmVlVlllVVVllkmhVms33999.1/,1.13910kgmPas35101.31.226(/),1.78510287288PKgmPasRT351.2261.1391020320501/999.11.78510139/ppmmpmpmmlVVlkmhVms101.3120320463/1400129/ppppmmmppmpmmpmmlplVVVlplkmhVms(2)1/31m1.2m/s200NpmmpmpmppmlVlVlVVl3/1.999mkgsPa310139.131.205/kgmsPa51081.153999.11.811011.25.27/1.2051.139103pVms22Re12DflV222231.2055.2720041.91999.11.20ppppmmmmlVDDNlV2222ReRe1122mpDDlVlVmpmpVVmpVV2mmppmpVlVVVlglgl22222222336(),11122250303.75101pppppmmmmmmFFFfFrlVlVlVpmlVlFFFNlVlNL23/NLVflV21231311NFVMLtLtMLtLLVLtMLMLt11111LVVLLV2222220002331222222222223230110232033NLVMLtMLtMLLLtNLVNVLfLV23=NLVfLV1120maxmax2max1sin22sin,0.84ppuglugmdVVudl3sin75,1.66/3maxdmm,=0.2,lmmkgmkg/mV=umax36-2.sin75,1.66/3maxudmm,=0.2,mmkgmkg/mu2220.8sin428000.80.21.669.810.0750.241.660.497(/)mdglkgs126.630,1580,10,dcmdcmUHcmhcm2211221222122121221122221()()(1)2pVpVzzggggppzzgVVVdVd(2)121d2dHh121230,1580,10dcmdcmHcmhcm(1),(2)4221221121211(3)2()dppHgVdUpghghgHpppgHgh2222242132343(4)(3)(4)2()441()29.81(13.61)100.100.150.0907(/)415110130ghQdVdddms(6)22236.23,=312-3-1-3-1VAxyiBxyjAmsBms1223(2)2(3)0uvVxyxyxy2223332xyyxyCxyx22332Vxyixyj)222332232320(2)(3)260ijkVxyzxyxykxyxykyxyxy6.34m15m/s10m110x,x.21015m/s,151521521302mmrr33015cosln15(lncos)2rrrrm15m/s10m226.3822,1.12,(1,2)4.8,(9,6)3xxy=kg/mpkPa1222214,44,4xyxxyy2)''4,4()4()14()1()(4)yxyfyxyxfyxfyfyyCyxxyyC2222,1.12,(1,2)4.83xxy=kg/mpkPa(9,6)203222222122222221122222112322322(4)(14)4(2)14164258946