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Title: Novel Shaped Sweeping Jet for Improved Film Cooling and Anti-Deposition Performance
题目：兼顾高效冷却与抗颗粒沉积的新型振荡射流冷却策略
Authors: ZHOU Wenwu, WANG Kechen, ZHANG Tianluan, WEN Xin, PENG Di, LIU Yingzheng
作者：周文武，王克辰，张天伦，温新，彭迪，刘应征
单位：上海交通大学
Journal of Thermal Science, 2024, 33(6): 2089-2096.
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摘要
Abstract: The present study proposed a shaped sweeping jet (SJ) that possesses the merits of both SJ and shaped hole, which demonstrates significantly improved cooling effectiveness and anti-deposition performance. Compared to a classical 777 shaped hole, the shaped SJ exhibits a maximum enhancement of 70% in cooling effectiveness and a maximum reduction of 28% in particle deposition height, respectively. Owing to the periodic oscillation of coolant jet and higher streamwise jet momentum, the shaped SJ can provide much wider coolant coverage and therefore sweep the adhesive particle away from the wall. This study is the first attempt to reconcile the performance of film cooling and particle anti-deposition simultaneously, which offers a promising design concept for future engine cooling.
摘要：针对未来航空发动机运行面临的极端热负荷及含尘、含沙等恶劣环境需求，本研究提出了一种兼顾高效冷却与抗颗粒沉积性能的新型振荡射流冷却策略。实验研究表明：相比于经典的777型孔，新型振荡射流的绝热冷效提升高达70%，颗粒沉积厚度减少可达28%。由于型孔射流的周期性扫掠和增强的流向动量，新设计能够提供更宽广的冷气覆盖，并且将粘附的颗粒从壁面吹离，从而降低沉积。本研究首次探索了同时考虑气膜冷却性能和抗颗粒沉积的新型冷却策略，为下一代涡轮叶片的冷却设计提供了一种有潜力的设计概念。
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引用格式
ZHOU Wenwu, WANG Kechen, ZHANG Tianluan, WEN Xin, PENG Di, LIU Yingzheng, Novel Shaped Sweeping Jet for Improved Film Cooling and Anti-Deposition Performance, Journal of Thermal Science, 2024, 33(6): 2089-2096.
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