지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2016.12
- 수록면
- 517 - 520 (4page)
이용수
초록· 키워드
오류제보하기
The evacuated pipeline of the propulsion system of a spacecraft has to be filled during the start-up at high altitude. This process is known as priming and can generate severe pressure peaks due to propellant slamming against a closed thruster valve. Previous studies [1] investigated these large pressure surges (peaks as high as 200 bar) as they can potentially damage flow components in the fuel system if not correctly accounted for. In this study a commercial flow network tool, Flownex®, was used to model an experimental setup of this priming procedure. The integrated mass, momentum and energy balance is solved using the continuity, momentum and energy equations applied to nodes and elements. These nodes and elements are the modular building blocks, typically semi-empirical and allow users to either select appropriate built-in correlations, or to define using specific equations through scripting. An appropriate model to capture the pressure pulse was created using the components in Flownex®.
Results produced from the network were compared with test data obtained from the DLR Lampoldshausen test-bench. Overall good agreement resulted, showcasing the success of the approach followed.
Results produced from the network were compared with test data obtained from the DLR Lampoldshausen test-bench. Overall good agreement resulted, showcasing the success of the approach followed.
목차
ABSTRACT
1. INTRODUCTION
2. EXPERIMENTAL SETUP
3. NETWORK APPROACH
4. NETWORK MODEL
5. NETWORK RESULTS
6. CONCLUSION
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