The vortex cooling with cascade channel and blade leading edge solid region is established. The flow and heat transfer properties of vortex cooling region, and the stress and displacement properties of blade solid region are analyzed by the fluid-structure interaction method. The ellipses edges with vertical axis to horizontal axis ratio a/b of 0.48, 0.72, 1.00, 1.31 and 1.73 are utilized to form the vortex chamber with different curvature. Influences of vortex chamber curvature on the vortex cooling fluid-structure interaction characteristics are researched to reveal the vortex cooling high heat transfer mechanism deeply. Results show that, for a/b decreasing from 1.73 to 0.48, the overall average Nusselt number and comprehensive heat transfer factor will first increase and then decrease, and the drag coefficient will gradually decrease. As a/b decreases, the high Nusselt number region moves from the target wall next to the nozzle to the target wall under the nozzle and at the vortex chamber bottom. With decreasing a/b, the thermal stress and thermal displacement on the blade pressure surface gradually decrease, while on the blade suction surface the thermal stress first decreases and then increases, and the thermal displacement first increases, then decreases and finally increases. In this study, compared with a/b = 1.73, the heat transfer performance for a/b = 0.72 has been enhanced by 21.00% and can provide the best protection for the blade.

建立了具有叶栅通道和叶片前缘实体区域的涡流冷却。采用流固耦合方法分析了涡流冷却区的流动和传热特性，以及叶片实体区的应力和位移特性。利用纵轴与横轴之比a/b为0.48、0.72、1.00、1.31和1.73的椭圆边形成不同曲率的涡流室。研究涡室曲率对涡流冷却流固耦合特性的影响，深入揭示涡流冷却高传热机理。结果表明，a/b从1.73减小到0.48，总体平均努塞尔数和综合传热系数先增大后减小，阻力系数逐渐减小。随着 a/b 的减小，高努塞尔数区域从喷嘴旁边的目标壁移动到喷嘴下方和涡流室底部的目标壁。随着a/b的减小，叶片压力面上的热应力和热位移逐渐减小，而叶片吸力面上的热应力先减小后增大，热位移先增大后减小最后增大。在本研究中，与a/b = 1.73相比，a/b = 0.72的传热性能提高了21.00%，可以为叶片提供最佳保护。叶片压力面上的热应力和热位移逐渐减小，而叶片吸力面上的热应力先减小后增大，热位移先增大后减小最后增大。在本研究中，与a/b = 1.73相比，a/b = 0.72的传热性能提高了21.00%，可以为叶片提供最佳保护。叶片压力面上的热应力和热位移逐渐减小，而叶片吸力面上的热应力先减小后增大，热位移先增大后减小最后增大。在本研究中，与a/b = 1.73相比，a/b = 0.72的传热性能提高了21.00%，可以为叶片提供最佳保护。