Comparison of different aspect ratio cooling channel designs for a liquid propellant rocket engine

Date

2007-06-16

Author

Boysan, M. E.
Ulaş, Abdullah
Toker, K. A.
Seckin, B.

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High combustion temperatures and long operation durations require the use of cooling techniques in liquid propellant rocket engines. For high-pressure and high-thrust rocket engines with long operation times, regenerative cooling is the most preferred cooling method. In regenerative cooling, a coolant flows through passages formed either by constructing the chamber liner from tubes or by milling channels in a solid liner. Traditionally, approximately square cross sectional channels have been used. However, recent studies have shown that by increasing the coolant channel height-to-width aspect ratio, the rocket combustion chamber hot-gas-side wall temperature can be reduced significantly. In this study, the regenerative cooling of a liquid propellant rocket engine has been numerically simulated. The engine has been modeled to operate on a LOX/GH(2) mixture at a chamber pressure of 68 atm and LH2 (liquid-hydrogen) is considered as the coolant. A numerical investigation was performed to determine the effect of different aspect ratio cooling channels and different coolant mass flow rates on hot-gas-side wall temperature and coolant pressure drop. The variables considered in the cooling channel design were the number of cooling channels and the cooling channel cross-sectional geometry along the length of the combustion chamber.

Subject Keywords

Aerospace, Remote sensing, Engineering, Mechanical, LOX/GH(2) mixture, LH2 (liquid-hydrogen)

URI

https://hdl.handle.net/11511/38178

DOI

https://doi.org/10.1109/rast.2007.4283982

Collections

Department of Mechanical Engineering, Conference / Seminar

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Citation Formats

M. E. Boysan, A. Ulaş, K. A. Toker, and B. Seckin, “Comparison of different aspect ratio cooling channel designs for a liquid propellant rocket engine,” 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38178.