Numerical Simulation and Shrinkage Defects Prediction of a Turbine Blade Investment Casting

摘要

By adopting the solid modeling software SoldEdge and the enmeshment software SRIFCast as the pre-processingplatform, a Ni based alloy turbine blade was three-dimensionally modeled and automatically enmeshed. A softwarecode for numerical simulation of fluid flow and heat transfer was developed. The Xue criterion and Niyama criterionwere used to predict the position of the shrinkage defects occurring in the solidification processes of the turbine blade.The results showed that both Xue and Niyama criteria could precisely predict the shrinkage defects in the Ni basedalloy turbine blade. This indicates that numerical simulation is a significant tool in improving casting quality.