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Numerical Study on Flap Style Rudder Hydrodynamic Characteristics With Different Connections

[+] Author Affiliations
Zhenwei Dong, Zhijian Xiao, Shiqi Gong, Zhiguo Zhang, Dakui Feng

Huazhong University of Science and Technology, Wuhan, China

Paper No. OMAE2016-55038, pp. V002T08A065; 8 pages
  • ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 2: CFD and VIV
  • Busan, South Korea, June 19–24, 2016
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4993-4
  • Copyright © 2016 by ASME


The flow field characteristics of 2-D flap style rudders with and without gap are analyzed through 4 models. To explore the influence of different filling styles, one flap rudder with gap and three flap rudders without gap are simulated from 0 to 30 degrees angle of attack with k-omega SST turbulence model.

Validation is done by comparing the results with EFD data from reference and the mesh independence verification is also made. Then lift and drag coefficients are compared among four models. Pressure, velocity distributions are given to explain the difference on hydrodynamic characteristics among them. Unsteady computation method is used to investigate the fluctuation characteristics of drag coefficients at large angle of attack. Stream lines are shown to better understand the vortex system on the suction surface.

Copyright © 2016 by ASME



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