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烟气轮机动叶轮盘冷却共轭传热数值分析

Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2013-09-16

Journal: 燃气轮机技术

Volume: 26

Issue: 3

Page Number: 38-43

ISSN: 1009-2889

Key Words: 烟气轮机;动叶轮盘;热固耦合传热;数值分析

Abstract: 使用CFD方法,对带有蒸汽冷却的某烟气轮机动叶轮盘进行热-固耦合数值分析.轮盘温升与其周边流场与温度场的耦合计算采用CFX的共轭传热方法,忽略热辐射影响,将流体域与固体域内的传输方程进行耦合求解,通过能量方程平衡流体和固体界面上热流,实现了流场与温度场的耦合数值分析.计算结果揭示了烟气轮机轮盘处复杂流动中烟气、冷却蒸汽对轮盘气动加热特征,并给出了冷却蒸汽对动叶轮盘温度场分布的影响规律.

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