Novel Shaped Sweeping Jet for Improved Film Cooling and Anti-Deposition Performance

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...

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Bibliographic Details
Published inJournal of thermal science Vol. 33; no. 6; pp. 2089 - 2096
Main Authors Zhou, Wenwu, Wang, Kechen, Zhang, Tianluan, Wen, Xin, Peng, Di, Liu, Yingzheng
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 2024
Springer Nature B.V
Subjects
Classical and Continuum Physics
Coolants
Effectiveness
Engineering Fluid Dynamics
Engineering Thermodynamics
Film cooling
Heat and Mass Transfer
Particle deposition
Physics
Physics and Astronomy
Sweeping
pressure sensitive paint
multi-perspective scanning
particle deposition
film cooling
sweeping jet
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Summary: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.
ISSN:1003-2169
1993-033X
DOI:10.1007/s11630-024-2048-3