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Delner Brakes Oct 2018

Alfa Laval Oct 2018

IJME WF4

Paper Title: Study of Froude and Hughes Methods by Numerical Towing Tank

 

Authors

Q Gao and D Vassalos, University of Strathclyde, UK

Summary

The resistance of a cargo ship is calculated by numerical towing tank. RANSE multi-phase parallel solver with K-w SST turbulent model and VOF formulation is applied. Computational results from double model (without free surface) are used to obtain 1+k in Hughes’ method and those with free surface are analyzed by both Froude and Hughes’ approaches to investigate model and full scale correlation. ITTC recommended uncertainty study is carried out to evaluate numerical error due to grid density. The computed wave elevation, wake distribution and resistance components by fine, medium and coarse meshes are cross-compared and validated against experiment data where applicable. It is found that grid resolution has most effect on wave pattern. The predicted friction and viscous-pressure resistance coefficients are relatively grid independent from present numerical simulation

Reference

Transactions RINA, Vol 153, Part A2, International Journal Maritime Engineering, Apr-Jun 2011

DOI Number

DOI No: 10.3940/rina.ijme.2011.a2.wf4

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