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作者自行设计了大尺寸吸气式篦齿换热风洞实验台并通过它对篦齿腔中的内部流场进行了详细的研究 ,得出了篦齿腔中速度场和压力场及流场内部旋涡分布规律。同时测量了在不同雷诺数、齿顶厚和齿隙比工况下 ,篦齿腔内二维流动状况及旋涡分布 ,分析得出不同雷诺数和齿隙比对篦齿腔内部流场的影响。并且测量了篦齿顶板表面的温度和换热系数的分布 ,得出雷诺数和齿顶厚与齿隙比对篦齿顶板局部换热规律的影响
The author designed a large-size aspirating grate tooth heat exchange wind tunnel experimental platform and through it, the internal flow field in the grate tooth cavity was studied in detail, and the velocity field, pressure field and flow field in the grate tooth cavity were obtained Internal vortex distribution. At the same time, the two-dimensional flow and vortex distribution in the cavity of the labyrinth at different Reynolds number, tooth top thickness and backlash ratio were measured. The influence of different Reynolds number and lacunar ratio on the internal flow field was analyzed . And the distribution of temperature and heat transfer coefficient on the surface of the top of the labyrinth was measured. The influence of Reynolds number, tip thickness and backlash ratio on the heat transfer of the top of the lamella was obtained