Experimental Study on the Performance Characteristics of the Diffuser as a Relation of the Variation of Vane Turning Angle

베인 회전각의 변화에 따른 디퓨저의 성능특성에 관한 실험적 연구

Recently, impressive gains of performance and efficiency with apparently little or no loss in flow range have been seen with the use of LSVD(Low Solidity Vaned Diffuser) over vaneless diffuser. Experiments of the effects of the vane turning angle variations(positive, negative, zero), with the other design parameters fixed, on the performance and flow range were carried out. Diffusers with a zero turning angle have the best characteristics in terms of performance and efficiency and the FFT results show different frequency characteristics due to vane turning angles in low flow range.