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An investigation into the effect of pressure source parameters and water depth on the wake wash wave generated by moving pressure source

Javanmardi, M ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.24200/sci.2017.4510
  3. Publisher: Sharif University of Technology , 2018
  4. Abstract:
  5. In this study, the effect of moving pressure source and channel parameters on the generated waves in a channel was numerically investigated; draught, angle of attack, and profile shape as parameters of pressure source, and water depth and blockage factor as channel parameters for wave height. Firstly, the chosen Computational Fluid Dynamics (CFD) approach was validated with the experimental data over a range of speeds. Then, the CFD study was conducted for further investigations. It was shown that that by enlarging draught, angle of attack, and beam of the pressure source, the wave height generated would be increased. Channel study showed that it was possible to increase the wave height generated by shallowing water for a given speed as long as the depth Froude number was subcritical and the wave height generated was independent of water depth for supercritical depth Froude numbers. The blockage factor had higher inuence at supercritical Froude depth values, while at subcritical Froude values, it was negligible compared with water depth. © 2018 Sharif University of Technology. All rights reserved
  6. Keywords:
  7. Computational uid dynamics ; Towing tank ; Wake wash ; Angle of attack ; Ship model tanks ; Wakes ; Water waves ; Wave propagation ; Channel parameter ; Depth value ; Effect of pressure ; Pressure source ; Profile shapes ; Supercritical ; Wake washes ; Wave heights ; Pressure effects ; Computational fluid dynamics ; Froude number ; Model validation ; Parameter estimation ; Pressure effect ; Shallow water ; Wake ; Water depth ; Wave generation ; Wave height
  8. Source: Scientia Iranica ; Volume 25, Issue 4 , 2018 , Pages 2162-2174 ; 10263098 (ISSN)
  9. URL: http://scientiairanica.sharif.edu/article_4510.html