平面幾何條件下的流體力學(xué)不穩(wěn)定性分析.pdf

1、電子科技大學(xué)碩士學(xué)位論文平面幾何條件下的流體力學(xué)不穩(wěn)定性分析姓名：袁永騰申請學(xué)位級別：碩士專業(yè)：等離子體物理指導(dǎo)教師：鄢揚(yáng)丁永坤20070613AbstractAbstractThehydrodynamicinstabilityhasbeenafocusofresearchinInertialConfinementFusion(ICF)ItCalldestroythesymmetryandintegrityofthecapsule，an

2、devenfailtheignitionInertialconfinementfusioncapsuleimplosionsareinherentlyunstableInp枷cular，theRayleighTaylorinstability(RTI)tendsatfirsttodestroytheimplodingshellandlaterhinderstheformationofthecentralhotspotTheunderst

3、andingofthegrowthofperturbationsisofextremeimportantforachievingtheignitionandhi曲gainItshouldbeclearthatthegoalofcentralhotspotignitiondependsmostcriticallyonhowtocontroltheinstabilityT11ispapermakesweoftwomethodstomeasu

4、retheperturbationgrowthofsinemodulatedsurfacetargetandexplorethesystemmodulationtransferfunction(MTF)ThispapermakesuseoffaceonphotographytechnologytoinvestigatetheRayleigh—Taylorinstabilityofsinemodulatedsurfacetargetand

5、gainavividspaceandtimeresolvedimageTheexperimentalresultareanalyzedbywingtwomethod：1FigureoutfundamentalmodeFouriercoefficient；2FigureouttheD—valueofwavecrestandwavehollowthetwomethodsobtainthesameperturbationgrowthfacto

6、rMoreoverthepossiblereasonsforthelittlegrowthhavebeendiscussedandgivethequalitativeinterpretationSideonradiographytechnologyCandirectlydemonstratethechangeofperturbationamplitudeontargetsurfaceIntheexperimentatShenguangI

7、Ilaserfacilitythistechnologyiswedtodetectrearsurfaceperturbationcausedbytheablationsurfaceperturbation111eperturbationamplitudeobservedintheexperimentishigherthanexpectedAccordingtoouranalysis，twodimensionaleffectisthema

8、inreasonforlargerperturbationgrowthofthereal“surfaceBecausethetargetissetonthediagnosisholeoftheholhraum，X—rayirradiatethepartofthetargetcorrespondingtodiagnostichole111erear汕facepermrbatioawhichisearnedbytheablation劉慨pe