A STUDY OF ACTIVE FLOW CONTROL FOR A HIGHLY-LOADED TURBINE USING JET-FLAP
Active flow control for a highly-loaded turbine using jetflap with low Reynolds number is investigated numerically.The numerical simulation results demonstrate that jet-flap could effectively act as a boundary layer control device and as a variable-area device. With 120％ design pitch, jet flow rates from 0 to 4％ of the primary flow rate with design pitch are used in this study. At about a jet flow of 1％, the onset,reattachment and amount of the separation on suction surface with 120％ design pitch is very close to that with design pitch.At about a jet flow of 4％, the separation does not exist, and the primary flow rate was decreased by a total of 30％. At about a jet flow of 3.4％, the primary flow rate with 120％ design pitch is equal to that with design pitch, and the flow is turned 5 degrees more than that with design pitch. As the jet flap deflects the main stream, the velocity over the rear portion of the suction surface is increased, separation is thereby suppressed, and a higher blade loading can be obtained.
Luo Hualing Qiao Weiyang Yi Jinbao Zhang Man Xu Kaifu
School of Engine and Energy, Northwestern Polytechnical University Xian, 710072 P.R.China
国际会议
昆明
英文
358-362
2006-09-18（万方平台首次上网日期，不代表论文的发表时间）