Volume 19, Issue 7 (July 2019)                   Modares Mechanical Engineering 2019, 19(7): 1779-1788 | Back to browse issues page

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Afshari B, Rostami Varnousfaaderani M. Numerical Investigation of Cavitation Effect on the Performance of Waterjet Propulsion System by Computational Fluid Dynamics. Modares Mechanical Engineering 2019; 19 (7) :1779-1788
URL: http://mme.modares.ac.ir/article-15-25225-en.html
Numerical Investigation of Cavitation Effect on the Performance of Waterjet Propulsion System by Computational Fluid Dynamics
B. Afshari1 , M. Rostami Varnousfaaderani * 2
1- Mechanics Faculty, Malek-Ashtar University of Technology, Isfahan, Iran
2- Mechanics Faculty, Malek-Ashtar University of Technology, Isfahan, Iran , rostamivf@aut.ac.ir
Abstract:   (3004 Views)
The numerical simulation of cavitation phenomenon in waterjet propulsion system, due to destructive effects and complicated and two-phase nature, is one of the greatest challenges in engineering and numerical modeling. Due to needing of very much cost for experimental studying this phenomenon in the cavitation tunnel, in this paper, the happening of cavitation in axial flow waterjet was simulated by computational fluid dynamics. The head, torque, and thrust due to cavitation and ignoring that were calculated in 3 flow rate values. The result showed good agreement with experimental data. One of the new studies in this paper is the investigation of the pattern of cavitation bulb forming on the tip and suction side of the rotor’s blade. Numerical simulation was performed, using the rotor and stator and with rotor only. Numerical solution is performed, using a the structured grid, the rotating reference frame, the periodic domain, and SST turbulence model in the steady form.
 
Keywords: Cavitation, Hydrodynamic performance, Waterjet, CFD, Two-phase flow, Turbulence
Full-Text [PDF 943 kb]   (2210 Downloads)    
Article Type: Original Research | Subject: Computational Fluid Dynamic (CFD)
Received: 2018/09/17 | Accepted: 2019/01/19 | Published: 2019/07/1
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