ガスタービン翼精密鋳造時のふく射伝熱解析高速化 Increase in Calculation Speed of Radiative Heat Transfer in Precision Casting Furnaces of Gas Turbine Blade
A fast radiative heat transfer program is developed for the simulation of unidirectional precision casting of gas turbine blade. Calculation speed is increased by incorporating three new methods. View factors are calculated by introducing an approximation equation and simplified surface integral. The visibility at surface elements is judged by extended plane-sweep method. For radiosity calculation in the radiative heat transfer analysis, multiple reflection is neglected. As the result, the present algorithm reduces the computation time for a model with 700 elements from 300 sec to 4 sec within accuracy of 3%.
- 日本ガスタービン学会誌 = Journal of the Gas Turbine Society of Japan
日本ガスタービン学会誌 = Journal of the Gas Turbine Society of Japan 31(6), 429-436, 2003-11-20