고온 고압 환경에서 가변추력기용 핀틀의 열전달 계수에 대한 수치적 연구 및 2D 실험 (Numerical Analysis and 2-D Experiment of Heat Transfer Coefficient onthe Pintle of a Controllable Thruster Nozzle)

서지정보

· 발행기관 : 항공우주시스템공학회
· 수록지 정보 : 항공우주시스템공학회지 / 6권 / 4호 / 24 ~ 28페이지
· 저자명 : 박순상, 문영기, 곽재수

초록

In this paper, 2-D experiment and steady-state computational fluid analysis were conducted for measuring the hear transfer coefficient of pintle type controllable thruster in high pressure and temperature. In case of 2-D experiment, transient liquid crystal technique was used for measuring heat transfer coefficient for the 2-D pintle model. The experimental result was used to validate the CFD result. The CFD results well predicted the heat transfer coefficient on the pintle surface except the nozzle downstream region, where the results by CFD was higher than experimental results. The CFD results were also compared with the result by Bartz equation and the it was shown that the Bartz equation overestimated the heat transfer coefficient on the nozzle throat as much as 80%.

영어초록

In this paper, 2-D experiment and steady-state computational fluid analysis were conducted for measuring the hear transfer coefficient of pintle type controllable thruster in high pressure and temperature. In case of 2-D experiment, transient liquid crystal technique was used for measuring heat transfer coefficient for the 2-D pintle model. The experimental result was used to validate the CFD result. The CFD results well predicted the heat transfer coefficient on the pintle surface except the nozzle downstream region, where the results by CFD was higher than experimental results. The CFD results were also compared with the result by Bartz equation and the it was shown that the Bartz equation overestimated the heat transfer coefficient on the nozzle throat as much as 80%.

참고자료

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