Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (9): 1283-1287.DOI: 10.12068/j.issn.1005-3026.2016.09.015

• Mechanical Engineering • Previous Articles     Next Articles

Fluent-Based Numerical Simulation of the Cavitation Behavior in the Angle Nozzle

ZHAO Ding-xuan, WANG Qian, DU Miao-miao   

  1. College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China.
  • Received:2015-05-20 Revised:2015-05-20 Online:2016-09-15 Published:2016-09-18
  • Contact: WANG Qian
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Abstract: Using the Fluent software to simulate the field of cavitation flow in the angle nozzles, the distribution of pressure, mass transferring rate from liquid to vapor and vapor fraction were obtained. The flow fields in the three nozzles with different divergence angles were analyzed by comparison. The results showed that in the angle nozzles, the cavitation bubbles were mainly generated at the starting point of the cylindrical region’s wall and divergence region’s wall. Under the working of reflux and pressure, an optimal divergence angle which impacts the generating rate of cavitation bubbles at the starting point of divergence region’s wall exists. With the divergence angle decreasing, the area of cavitation on the wall of divergence regions expands continuously, and the vapor fraction also increases gradually. Changing divergence angles has no obvious effect on the cavitation behavior of cylindrical regions.

Key words: cavitation, angle nozzle, divergence angle, numerical simulation, vapor fraction

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