Determination of damping coefficients of roll for heeled frame sections using numerical methods
EDN: FOCKTX
Abstract
This paper presents a numerical (CFD) approach for determining roll damping coefficients of ship frame contours at an initial heel angle, modeling emergency scenarios. The method employs the strip theory hypothesis, solving Reynolds-Averaged Navier-Stokes (RANS) equations with the SST k-ω turbulence model and VOF method for free-surface tracking. Implemented in OpenFOAM using an Overset dynamic mesh, forced oscillations of two characteristic frame contours are simulated across a wide frequency range. Key results demonstrate good agreement between calculated dimensionless damping coefficients (μ'₄₄) and experimental data for upright (0°) positions. The findings validate the proposed CFD method's adequacy and practical applicability for accurately predicting ship motion hydrodynamic characteristics from inclined positions — crucial for stability and safety assessment in off-design conditions.
About the Authors
D. A. Al'baev
St. Petersburg State Marine Technical University
Russian Federation
Russian Federation
PhD, Associate Professor
190121, St. Petersburg, Lotsmanskaya ul., 3
A. I. Dintser
St. Petersburg State Marine Technical University
Russian Federation
Russian Federation
Assistant Professor
190121, St. Petersburg, Lotsmanskaya ul., 3
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Review
For citations:
Al'baev D.A., Dintser A.I. Determination of damping coefficients of roll for heeled frame sections using numerical methods. Research Bulletin by Russian Maritime Register of Shipping. 2025;1(80):75-81. (In Russ.) EDN: FOCKTX
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