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A Numerical Study on Strut-Placed Supersonic Flow in Annulus Flowfield
박희준(Hee Jun Park),주원구(Won Goo Joo) 한국전산유체공학회 2002 한국전산유체공학회 학술대회논문집 Vol.2002 No.-
In this numerical approach, strut~placed supersonic annular flow is examined. The geometrical variations of strut cause strong influence on flowfield structures. The geometrical variations are as follows ; swept effect, attack angle effect, variation of leading edge shape. These changed features such as velocity structure, pressure structure, shock-boundary layer interaction are compared and analyzed according to each geometrical configuration.
주기적 후류가 누설유동이 존재하는 익렬 유동에 미치는 영향에 대한 실험적 연구
임지현(Im Ji Hyun),김동현(Kim Dong Hyun),주원구(Joo Won Goo) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
To research on change of blade row flow field with tip clearance caused by upstream periodic wake, an<br/> apparatus that generate periodic wake through traversing cylinders were installed. Then how movement of<br/> upstream wake affect cascade flow and tip leakage flow were measured. Cylinder was installed in front of<br/> 50% of chord length, and traversing velocity was calculated at approximately 11.7m/s regarding inlet velocity<br/> and chord length. To measure three-dimensional velocity of flow inside blade row, single slanted hot-wire was<br/> used. From the results, when the periodic wake is inserted, the flow inside of cascade is dominantly affected<br/> by vortex that is generated from cylinder. This periodic wake affects passage vortex and tip leakage vortex.