CFD analysis of flow boiling in the ITER first wall

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• 作者：Phani Domalapally ; Enrico Rizzo ; Laura Savoldi Richard ; Fabio Subba ; Roberto Zanino
• 关键词：Boiling ; First wall ; Two phase flow ; Computational Fluid Dynamics
• 刊名：Fusion Engineering and Design
• 出版年：2012
• 出版时间：August, 2012
• 年：2012
• 卷：87
• 期：5-6
• 页码：556-560
• 全文大小：740 K

文摘

This paper compares two Computational Fluid Dynamic (CFD) approaches for the analysis of flow boiling inside the first wall (FW) of the International Thermonuclear Experimental Reactor (ITER): (1) the Rohsenow model for nucleate boiling, seamlessly switching to the Volume of Fluid (VOF) approach for film boiling, as available in the commercial CFD code STAR-CCM+, (2) the Bergles-Rohsenow (BR) model, for which we developed a User Defined Function (UDF), implemented in the commercial code FLUENT. The physics of both models is described, and the results with different inlet conditions and heating levels are compared with experimental results obtained at the Efremov Institute, Russia. The performance of both models is compared in terms of accuracy and computational cost.