变工况条件下汽轮机高压缸末级气动及强度性能研究

石红晖, 王海波, 曹蓉秀, 姚力, 晏鑫

Research on Aerodynamic and Strength Performance of Last Stage in High-Pressure Cylinder of Steam Turbine Under Variable Working Conditions

Honghui SHI, Haibo WANG, Rongxiu CAO, Li YAO, Xin YAN

表3 近壁面第1层网格距离无关性分析

Tab. 3 Independency analysis of the first mesh layer distance near wall

y_wall/mm	近壁面平均y⁺	$η_{i t}$	$\dot{m}$ /(kg·s^-1)	相对偏差/%
0.01	70.6	0.905 8	747.08	2.037
0.005	33.1	0.904 9	746.06	1.897
0.0025	16.9	0.905 2	742.11	1.358
0.001	7.8	0.904 4	734.49	0.317
0.000 5	3.6	0.904 2	732.17	—