대한기계학회논문집 (Transactions of the Korean Society of Mechanical Engineers)
- 제19권3호
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- Pages.784-795
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- 1995
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- 1225-5963(pISSN)
DOI QR Code
선형터빈 케스케이드 통로내의 2차 유동과 손실에 관한 연구
The Experimental Investigation of the Secondary Flow and Losses Within the Plane Turbine Cascade Passage
초록
This paper represents the results of the experiments of the three-dimensional flow and the aerodynamic loss caused by the three-dimensional flow within the plane bucket blades. To research the secondary flow and the aerodynamic loss, the large-scale plane bucket blade of lst-stage in the low pressure steam turbine is made of FRP. The detailed investigation of the secondary flow and the aerodynamic loss using 5-hole pressure probe within turbine cascade has been carried out in the low speed wind tunnel. The limiting streamlines of the suction and endwall surface have been visualized by the oil film method. The flow visualization of the secondary flow has been performed by the laser light sheet technique and image processing system. By using the method mentioned above, it is possible to observe the evolution of the pitchwise mass-averaged flow deviation angle and total pressure loss coefficient, the secondary flow, and the aerodynamic loss through the cascade.
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