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https://doi.org/10.17559/TV-20181225155510

Numerical Investigation of Flow and Heat Transfer Characteristics in Plate with Multiple Incline Stage Holes

Bo Zhang ; Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Yuanyuan Dou ; Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Quan Hong ; Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Honghu Ji ; Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Puni tekst: engleski, pdf (5 MB) str. 471-477 preuzimanja: 309* citiraj
APA 6th Edition
Zhang, B., Dou, Y., Hong, Q. i Ji, H. (2019). Numerical Investigation of Flow and Heat Transfer Characteristics in Plate with Multiple Incline Stage Holes. Tehnički vjesnik, 26 (2), 471-477. https://doi.org/10.17559/TV-20181225155510
MLA 8th Edition
Zhang, Bo, et al. "Numerical Investigation of Flow and Heat Transfer Characteristics in Plate with Multiple Incline Stage Holes." Tehnički vjesnik, vol. 26, br. 2, 2019, str. 471-477. https://doi.org/10.17559/TV-20181225155510. Citirano 13.05.2021.
Chicago 17th Edition
Zhang, Bo, Yuanyuan Dou, Quan Hong i Honghu Ji. "Numerical Investigation of Flow and Heat Transfer Characteristics in Plate with Multiple Incline Stage Holes." Tehnički vjesnik 26, br. 2 (2019): 471-477. https://doi.org/10.17559/TV-20181225155510
Harvard
Zhang, B., et al. (2019). 'Numerical Investigation of Flow and Heat Transfer Characteristics in Plate with Multiple Incline Stage Holes', Tehnički vjesnik, 26(2), str. 471-477. https://doi.org/10.17559/TV-20181225155510
Vancouver
Zhang B, Dou Y, Hong Q, Ji H. Numerical Investigation of Flow and Heat Transfer Characteristics in Plate with Multiple Incline Stage Holes. Tehnički vjesnik [Internet]. 2019 [pristupljeno 13.05.2021.];26(2):471-477. https://doi.org/10.17559/TV-20181225155510
IEEE
B. Zhang, Y. Dou, Q. Hong i H. Ji, "Numerical Investigation of Flow and Heat Transfer Characteristics in Plate with Multiple Incline Stage Holes", Tehnički vjesnik, vol.26, br. 2, str. 471-477, 2019. [Online]. https://doi.org/10.17559/TV-20181225155510

Sažetak
In this paper, the effects of impingement and film composite cooling on the design of combustion chamber cooling structure are simulated by numerical simulation. The focus of the investigation was on increased film cooling efficiency and enhanced heat transfer between the coolant and the hole wall. The five-stage shaped hole model and one cylindrical hole design have the same equivalent flow area. The flow and heat transfer characteristics of cylindrical hole and stage-shaped hole were numerically investigated under same blowing ratio, and compared at the same blowing ratio. The results showed the stage-shaped hole resulted in higher cooling effectiveness, especially in rear part, and the mechanisms of which were studied in details. The consequences of the phase parameters in the flow have very clearly dependedt on the internal shape of the corresponding hole. Stage-shaped holes formed impact inside the wall, tapped the coolant potential in cooling, and increased the heat transfer inside the solid wall. Further, stage-shaped hole resulted in unstabilized flow inside hole, gave an enhancement of lateral spreading ability, and brought a significant increase of the film lateral effectiveness. Further, the affection of area ratio and height ratio has been studied by five models. The results show that the increasing of area ratio leads to an increase in cooling efficiency, which also indicates the increasing of height ratio showed slight affection.

Ključne riječi
film cooling; heat transfer enhancement; impingement; stage-shaped holes

Hrčak ID: 219539

URI
https://hrcak.srce.hr/219539

Posjeta: 538 *