Abstract
CFD analysis has become an essential tool in ship hydrodynamics both for practical design applications and for engineering researches. However, although much efforts are being devoted to the development of turbulence modeling, universal turbulence models which can be applied to a wide class of flows are not yet established. Particularly, ship flows are characterized as turbulent flows with separation around complex geometry and this makes the modeling even more difficult. In the current ship flow simulations, the turbulence model must be carefully selected from the experiences and the optimal model varies case by case. Recently, a new concept is proposed for expanding flexibility and applicability of a RANS turbulence model. This approach called GEKO (GEneralized K-Omega) applies a modification to the existing k-\(\omega \) SST model by adding free parameters to control the various properties, such as separation, curvature correction, near wall treatment, and so on. Inspired by this approach, the parameter tuning of the SST model is attempted in the present study to improve the prediction capability of the k-\(\omega \) turbulence model for ship resistance flow applications.
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Conceptualization: [TH]; Methodology: [TH, KS]; Formal analysis and investigation: [KS]; Writing—original draft preparation: [TH]; Writing—review and editing: [YT]; Resources: [TH]; Supervision: [TH, YT].
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Hino, T., Suzuki, K. & Takagi, Y. Modification of k-\(\omega \) turbulence model for ship resistance flow predictions. J. Ocean Eng. Mar. Energy 8, 527–538 (2022). https://doi.org/10.1007/s40722-022-00259-6
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DOI: https://doi.org/10.1007/s40722-022-00259-6