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http://dx.doi.org/10.6108/KSPE.2022.26.2.001

Comparative Evaluation on the Deriving Method of the Heat Transfer Coefficient of the C-D Nozzle  

Noh, Tae Won (Department of Aerospace Engineering, Inha University)
Roh, Tae-Seong (Department of Aerospace Engineering, Inha University)
Lee, Hyoung Jin (Department of Aerospace Engineering, Inha University)
Lee, Hyunseob (Rocket Propulsion, Mechanical R&D, LIG Nex1)
Yoo, Phil Hoon (Rocket Propulsion, Mechanical R&D, LIG Nex1)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.26, no.2, 2022 , pp. 1-11 More about this Journal
Abstract
The heat transfer coefficient on the wall, which is used as a boundary condition in the thermal analysis of general contract-divergent supersonic nozzles, affects the thermal analysis accuracy of the entire nozzle. Accordingly, many methods of deriving a heat transfer coefficient have been proposed. In this study, the accuracy of each method was compared. For this purpose, the heat transfer coefficients were calculated through theoretical-based analogy methods, semi-empirical equations, and CFD simulations for the previously performed heat transfer experiment with an isothermal wall and compared with the experimental results. The results show that the Prandtl-Taylor analogy methods and the CFD results with the k-ω SST turbulence model were in good agreement with the experimental results. Furthermore, the Modified Bartz empirical formula showed an overall over-prediction tendency.
Keywords
Heat Transfer Coefficient; Bartz Equation; Supersonic Nozzle; CFD;
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Times Cited By KSCI : 2  (Citation Analysis)
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