三峽永久船閘輸水廊道水動(dòng)力學(xué)特性研究.pdf

1、二勘凡學(xué)預(yù)上學(xué)位論正9D7770圖lC分類號(hào)帶級(jí)單位代號(hào)：11903學(xué)號(hào)：03720715上海大學(xué)工學(xué)碩士學(xué)位論文三峽永久船閘輸水廊道水動(dòng)力學(xué)特性研究碩士生：張訃光導(dǎo)師：馬崢副研究員陳紅勛研究員學(xué)科專業(yè)：流體力學(xué)一卜海大學(xué)上海市應(yīng)用數(shù)學(xué)利力學(xué)研究所2006年4月上∑盟型蘭堂蘭竺型!!L——ABSTRACTDuringthegate’openingandgaleclosingperiods，unsteadyseparatedllowwit

2、hcomplicatededdymotionsoccursintheradialgatetunnelofahighriseshiplockNegativepressureandhighvelocityaswellastheirintensefiuctuationscouldeasilvresultinharmfulflowcavitationsgatevibrationandsonicboomanddetrimenlaletlj’ect

3、stothehydraulcstructureWithatotalheadof113metersandamaximumheadforthemediatestepofupto452meters，thepermanenttVYOwayandfivestepshiplockintheThreeGorgesProjecthasmanyverycomplicatedhydraulicchallengesSoitissignificanttoana

4、tyzeandresearchonthehydrodynamiccharacteristicsofthereverseradial￡atet_nnelBasedontheincompressibleRANSequations，finitevolumemethod，standardk一￡turbulencemodelandwallfunction，thethesisUSeStheCFDsofiwareFLUENftosimulatethe

5、viscousflowinthereverseradialgatetmmelBasedontheformerresearchresults，properboundaryconditionsofuniquesolutionareanalyzedandverifiedbynumericalexperimentsaccordingtothecharacteristicsofthephysicalmodelInaddition，thebound

6、aryconditionsoftheupperreachesandthevalvewellreflectingthechangingofthewaterleveltakepriorityoftheformersymmetricalboundaryconditionsInfluenceoftheflowaccordingtothebodysizeandthegapbetweengateandthedoorheadisconsideredM

7、ovingmeshingtechnologyisadoptedtosolvethemovingboundarywhenthevalverevolvesUsingtheresultsofinnerflowfieldparameterssuchasvelocityandpressure，characteristicsofinnerflowinthereverseradialgatetunnelareanalyzedinthetwodimen

8、sionsnumericalsimulationofthereverseradialgatetunneloftheThreeGorgesLock’lastchamberAstudyhasbeenmadetoshowthepressurecharacteristicsofthegapandthetoptunnelwalldownstreamtothegateTheeffectsoftheinnerflowscausedbytherevol