NUMERICAL STUDY OF CAVITATING VORTEX FLOW IN STARTING SUBMERGED WATER JET(Water Jet)

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概要

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• Unsteady non-cavitating and cavitating flows of submerged water jet have been investigated numerically by applying a practical approach based on two-phase cavitating flow model. Computations were focused on the behavior of starting submerged jet, and the validity was confirmed by comparing computational results with experimental data. Numerical results reveal that a ring-like starting vortex is generated around the jet periphery with impulsively starting of submerged water jet. Independent of the injection velocity the development of ring-like starting vortex is decided by the vortex formation time. When the device cavitation coefficient is smaller than a certain value cavitations take place initially in the local area of starting vortex core, and a ring-like cavity of cavitation bubbles is generated. The behavior of the ring-like cavity is closely related to the development of starting vortex, which is influenced by cavitation bubbles in turn.

• 一般社団法人日本機械学会の論文
• 2005-10-05

著者

• PENG Guoyi

  Department of Mechanical Systems Engineering, Faculty of Engineering, Toyama Prefectural University

• Peng Guoyi

  Department Of Mechanical Systems Engineering Faculty Of Engineering Toyama Prefectural University

関連論文

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• An Improved CIP-CUP Method for Submerged Water Jet Flow Simulation
• NUMERICAL STUDY OF CAVITATING VORTEX FLOW IN STARTING SUBMERGED WATER JET(Water Jet)
• Numerical Simulation of Cavitating Water Jet by a Compressible Mixture Flow Method

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