MINGFu-ren, ZHANGA-man, YANG Wen-shan. Three-dimensionalsimulationsonexplosiveloadcharacteristicsofunderwaterexplosionnearfreesurface[J]. Explosion And Shock Waves, 2012, 32(5): 508-514. doi: 10.11883/1001-1455(2012)05-0508-07
Citation:
|
MINGFu-ren, ZHANGA-man, YANG Wen-shan. Three-dimensionalsimulationsonexplosiveloadcharacteristicsof
underwaterexplosionnearfreesurface[J]. Explosion And Shock Waves, 2012, 32(5): 508-514. doi: 10.11883/1001-1455(2012)05-0508-07
|
MINGFu-ren, ZHANGA-man, YANG Wen-shan. Three-dimensionalsimulationsonexplosiveloadcharacteristicsofunderwaterexplosionnearfreesurface[J]. Explosion And Shock Waves, 2012, 32(5): 508-514. doi: 10.11883/1001-1455(2012)05-0508-07
Citation:
|
MINGFu-ren, ZHANGA-man, YANG Wen-shan. Three-dimensionalsimulationsonexplosiveloadcharacteristicsof
underwaterexplosionnearfreesurface[J]. Explosion And Shock Waves, 2012, 32(5): 508-514. doi: 10.11883/1001-1455(2012)05-0508-07
|
Three-dimensionalsimulationsonexplosiveloadcharacteristicsof
underwaterexplosionnearfreesurface
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Abstract
Basedonthethree-dimensionalSPH method,thevariablesmoothinglengthmodificationis
appliedtothetraditionallinked-listsearchalgorithm,andthestableapproachofdealingwithmultiphasematerialinterfaceisputforward.
Throughsimulatingunderwaterexplosionoffreefield,the
feasibilityandeffectivenessofthe modified methodareverified.Thethree-dimensionalnumerical
modelisestablished,andtheprocessofunderwaterexplosionnearfreesurfaceisreproduced.Characteristicsofshockwavepropagation,
pressurefieldandenergyfieldaresummedup.Theeffectofdifferentexplosiondepthontheinitialwatercolumnformationisstudied.
Resultsshowthatfreesurface
canattenuatethepeakpressureandimpulsetoonethirdandoneseventhoftheoriginalvalues,respectively.
Withtheincreaseofdetonationdepth,curvatureoftheequivalentcylinderofpeakpressureratioandimpulseratiodecrease,
andtheproducedwatercolumngraduallytransitsfrombroken
andspraycolumntohighandnarrow mound.
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References
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Proportional views
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