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NexansSept17

IJME 473

Paper Title: Viscosity in Seakeeping

 

Authors

M Pawłowski, Gdansk School of Higher Education, Poland

Summary 

Application of strip theory for the prediction of ship motions in waves relies on sectional hydrodynamic coefficients; i.e. the added mass and damping coefficients. These coefficients apply to linearised problems and are normally computed for inviscid fluids. It is possible to account for viscosity but this cannot be done by the RANS equations, as in linear problems there is no room for turbulence. The hydrodynamic coefficients can include the effect of viscosity but this can be done rightly through the classic Navier–Stokes equations for laminar (non-turbulent) flows. For solving these equations commercial RANS software can be used, assuming no Reynolds stresses.

Reference

Transactions RINA, Vol 160, Part A2, International Journal Maritime Engineering, Apr-Jun 2018 

DOI Number

DOI No: 10.3940/rina.ijme.2018.a2.473

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