Cooling structure on double-web turbine disk with equal mass scheme
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摘要: 采用数值方法研究了双辐板涡轮盘(即空心涡轮盘)腔内的流动和换热结构.在空心涡轮盘与实心涡轮盘重量一定的前提下,按照转静腔和旋转腔冷气进气位置不同,提出几种组合进气方式的空心涡轮盘冷却结构,即:中心进气转静腔+中心进气旋转腔、中心进气转静腔+高位进气旋转腔、高位进气转静腔+中心进气旋转腔以及高位进气转静腔+高位进气旋转腔.计算结果表明:中心进气转静腔+高位进气旋转腔结构、高位进气转静腔+高位进气旋转腔结构与等重量实心盘及其它空心盘结构相比具有较好的换热效果,同工况下涡轮盘体积平均温度和最大径向温差在空心盘各结构中较低,但阻力损失较大.Abstract: Numeration analysis was made to simulate the flow and heat transfer in the double-web turbine disk. Several cooling structures of double-web turbine disk with different radial inlet position were proposed based on the same weight as a simplified solid disk. The calculated results present that: structures, in which rotor-stator cavity resorting a center or high positioned cooling air inlet, with the rotating cavity using high positioned inlet both, show better features of heat transfer. The lower volume mean temperature and the lower radial temperature difference are obtained, however, the resistant loss will increase a little.
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Key words:
- double-web turbine disc /
- turbine disk /
- heat transfer /
- flow /
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