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PSO 기법을 이용한 그루브윅 히트 파이프 형상 최적화 연구
김권호(K.H. Kim),이균호(K.H. Lee),백승욱(S.W. Baek) 한국전산유체공학회 2012 한국전산유체공학회 학술대회논문집 Vol.2012 No.11
A heat pipe(HP) optimization is unsuitable to Gradient-based methods because design variables have nonlinear interaction and multiple constraints are involved. The object of present study is to optimize the grooved wick HP for a space application using PSO method, simple heuristic search method. The HP configuration is optimized regarding to five parameters and fifteen constraints. To verify the Optimization performance, a total mass estimation are compared with total mass of practical HP.
한조영(C. Y. Ran),박태선(T. S. Park),이균호(K. H. Lee),유명종(M. J. Yu) 한국전산유체공학회 2004 한국전산유체공학회 학술대회논문집 Vol.2004 No.-
The monopropellant hydrazine thrusters are widely used for the satellite on-board propulsion system fulfilling various missions in space. They have outstanding features caused by the nearly unlimited restart capability and the very high credibility. The sole monopropellant thruster used at precent in nation is MRE-1 that is a standard component of NASA. It can produce 4.45 N of nominal thrust. Due to the growing complexity with a satellite mission, the needs for thrusters of the diverse performance are being increased. The numerical simulation could give useful information to develop a new type thruster instead of the experiments performed previously. Therefore it is critical to make a reliable computer code to prepare design change of a thruster. In this paper, the performance analysis and validation of the satellite monopropellant hydrazine thruster currently used is accomplished as the preliminary study to serve valuable data for future design change.<br/>