1、昆明理工大學(xué)碩士學(xué)位論文一般鑄件凝固過(guò)程數(shù)值模擬研究姓名：張紅松申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料加工工程指導(dǎo)教師：張希俊20030510昆明理工大學(xué)碩士碩士學(xué)位論文ABSTRACTInthispaper，thepresentforeignanddomesticresearchoncomputerdigitalsimulationofcastingprocessisintroducedwhichindicatesthedifferencebe

2、tweenourcountryandtheforeignOnthesametime，Theaccordancepurpose，andthemeaningahoutselectingthesubjecthavebeenanalyzedInthesimulationoftemperaturefields，accordingtotheprincipleOfHeattransfer。thethree—dimensionalequationofh

3、eatconductionisestablishedbyusingfinitedifferencemethod：Moreoverthethreedimensionalfinitedifferenceequationofsomeboundryconditionssuchasconvective，andthethethermalcurrentdensitywasgivenetcareestablishedaccordingtOtheprin

4、cipleofenergyconservationInthetreatmentofthelatentheatoffusion，thetemperaturecompensationmethodandenthalPYmethodareusedOnthebasisoftemperaturefieldsimulationtheG壓whichiscombinedwiththetechnologyofdynamicaldivisionof‘isol

5、atedmeltingzonesisusedtopredicttheshrinkagecavitiesandporositiesduringsoIidficationprocess：Inthepredicationofhotcrack，thehotcrackcriterionbasedonrheologymodelisregardedasthemathematicalmodeltopredictthehotcrackofcastings

6、olidficationaccordingtothemathematicalmodeloftemperaturefileds。shrinkagecavities，poresitiesandthehotcrack，theprogramofcomputerizedsimulationisdevelopedusingMicrosoftVisualC60andtheresultsofcomputerizedsimulationarecompar