유동상사를 이용한 10인치 볼밸브 내부유동 분석

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 26; no. 4; pp. 386 - 392
• Main Authors: 이상문(Sang Moon Lee), 장춘만(Choon Man Jang)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2015
• Subjects: 기계공학; Opening angle of a ball valve; Circulation flow; Flow Similarity; 삼차원 수치모델; 볼밸브 개폐각; 유동상사; Ball valve; 볼밸브; 선회유동; Three-dimensional numerical model
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2015.26.4.386

Flow characteristics inside a 10 inch ball valve have been analyzed using three-dimensional numerical analysis and experiments. Continuity and three-dimensional Reynolds-averaged Navier-Stokes equations have been used as governing equations for the numerical analysis. The numerical model has been constructed through the grid dependency test and validation with the results of experiments to ensure reliability and numerical effectiveness. The shear stress transport (SST) model has been used as the turbulence closure. The experimental test-rig has been constructed to measure pressure, temperature and flow rate along the pipeline. Some valve opening angles have been tested to evaluate the flow characteristics inside the ball valve and pipeline. The results show that the rapid pressure variations is observed while the valve opening angle decreases, which caused by flow separation at the downstream of the ball valve.