Volume 32 Issue 6
Apr.  2014
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LIXiao-jie, ZHANGCheng-jiao, YAN Hong-hao, WANGXiao-hong, WANGYu-xin. Differencemethodofcharacteristicsinisentropicflowofunderwaterexplosioninnear-fieldregion[J]. Explosion And Shock Waves, 2012, 32(6): 604-608. doi: 10.11883/1001-1455(2012)06-0604-05
Citation: LIXiao-jie, ZHANGCheng-jiao, YAN Hong-hao, WANGXiao-hong, WANGYu-xin. Differencemethodofcharacteristicsinisentropicflow ofunderwaterexplosioninnear-fieldregion[J]. Explosion And Shock Waves, 2012, 32(6): 604-608. doi: 10.11883/1001-1455(2012)06-0604-05

Differencemethodofcharacteristicsinisentropicflow ofunderwaterexplosioninnear-fieldregion

doi: 10.11883/1001-1455(2012)06-0604-05
Funds:

NationalNaturalScienceFoundationofChina(10972051)

  • Publish Date: 2012-11-25
  • Animproveddifferencemethodofcharacteristicsisdiscribed.Twogroupsofcharacteristic equationswithentropytermsarededucedaccordingtothebasicmechanicsequations,andtheparticle pathlineisaddedintheequationsetasthethirdcharacteristicequation.Theisentropicflowafter blastshockwavecanbesolvedusingthethreecharacteristicequations.Thereisnoartificialviscosity termintheequations,sotheinfluenceofthehumaninterventionisreduced.Then,byapplyingthe improveddifferencemethodofcharacteristics,theunderwaterexplosionofthesphericalchargeof compositionB-3isstimulated.Inthescaleddistanceof1R/R04,thepeakpressureerrorbetween thenumericalcalculationresultsandtheexperimentcurveislessthan13.1%,whichprovesthatthe improveddifferencemethodofcharacteristicsisreasonable.
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