다중 블록 격자를 이용한 원뿔 직관 모양의 벌류트 유동의 수치해석

다국어 초록 (Multilingual Abstract)

Numerical investigation of a centrifugal compressor volute having a modified straight conical duct has been made. Three-dimensional Reynolds-Averaged Navier-Stokes equations with k-ε turbulence equation are solved To avoid coordinate singularity at the central axis of the duct, multi-block H-type grid is generated on the circular cross-sections of the volute and stretched toward the solid wall boundary. We obtained numerical results with three different mass flow rates at the volute inlet, namely, with the inlet conditions that give small, medium and large mass flow rates at the outlet of the conical duct. Agreement with the experimental results is observed.

참고문헌 (Reference)

1 "원심 압축기 벌류트 3차원 유동의 수치해석" 30 (30): 222-229, 2006

2 "of a Circumferential Exit Pressure Distortion on the Flow in an Impeller and Diffuser" 109 (109): 48-54, 1987

3 "Performance Investigations of Large Capacity Centrifugal Compressors" 1978

4 "Numerical Analysis of the Three-Dimensional Swirling flow in Centrifugal Compressor Volutes" 116 : 462-468, 1994

5 "Experimental and Theoretical Study of the Swirling Flow in Centrifugal Compressor Volutes" 112 : 38-43, 1990

6 "Experimental and Numerical Investigation of the Flow in a Centrifugal Compressor Volute" 122 : 22-31, 2000

7 "Experiences in the Development of Radial Compressors" Advanced Radial compressors 1972

8 "Evaluation of the Flow in a Vaneless Diffuser Followed by a Volute" 1986 (1986): 15-20, 1986

9 "Estimation of Pressure Loss in Ring-type Exit Chambers" p.511-516.