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자료유형
학술대회자료
저자정보
정수진 (한국자동차연구원) 문성준 (한국자동차연구원) 이검수 (인지컨트롤스) 강지훈 (인지컨트롤스)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2022년 한국자동차공학회 추계학술대회 및 전시회
발행연도
2022.11
수록면
2,357 - 2,361 (5page)

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The aim of this study is to investigate dynamic flow characteristics of the fluid flow through Penta-Control Coolant Valve by comparing to steady state CFD simulation. To achieve this goal, the present paper attempts the dynamic simulation of the fluid flow through PCCV using a commercial CFD solver with moving mesh technique. Firstly, dynamic flow characteristics and the energy loss inside the PCCV ball valve during the opening and closing process was analyzed. It is found that the discrepancies between dynamic and steady state simulation is larger when the rotating degree is in ranging from 40 to 50 degree, while the fluid resistance is very small at the rest of the degree. Then, the dynamic flow characteristics of the PCCV ball valve at different spool rotational speeds were investigated. It is found that the velocity value and the flow turbulence are gradually increased when the spool rotational speed increases from 94 deg/s to 47 deg/s. It is also founded that faster rotating speed of ball valve leads to larger discrepancies between dynamic and steady CFD simulation in terms of accuracy of mass flow prediction. Finally, dynamic thermal mixing characteristics during the valve opening and closing process with different rotating velocity were analyzed. It is found that the difference between dynamic and steady simulation is increased with increasing rotating speed. It is helpful for the design of ball valves opening strategy and the improvement of the whole FCEV thermal management system.

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Abstract
1. 서론
2. 해석모델 및 조건
3. 해석결과
4. 결론
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