Abstract
Control equations were dissociated by the finite volume method, and the closed turbulence model equations were solved, and the different forms of flow characteristics and leakage condition in lateral tooth seal in turbine were analyzed by using numerical methods. The results show that the leakage rate of the lateral tooth steam seal with a single low tooth is less than that of the lateral tooth steam seal with double low teeth under different import pressure. And the leakage rate of the lateral tooth steam seal with a single low tooth or double low teeth and bottom teeth are slightly more than those without bottom teeth. It provides theoretical reference and technical support for the engineering design and transformation of steam seal in the turbine.
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