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金属学报(英文版) 2000
HYDRODYNAMIC SIMULATION TO MOLD FILLING UNDER COUNTER GRAVITYKeywords: casting,mold filling,hydrodynamics Abstract: 1.IntroductionCastingprocessesundercountergravityareonesthatarewidelyusedfornonferrousmetalcastings.Theprocessesarecharacterizedbythatmoltenmetalinthecrucibleisforcedtofillintomoldcavitiesagainstgravityunderanadjustablepressuredifferential.FOrthisreason,dynamicsofallkindshaveinfluencesonmoldfilling,especiallyonthetemperaturefieldduringsolidificationofcasting,aswellasformationofsuchdefectsasporosity,oxideinclusion,gashole,etc.Obviously,theflowmorphologydependsuponhydrodynamics.Ref.1]described…
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