Series 60 Cargo Ship Hull | CFD Validation
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Streamwise Velocity along the Hull Length |
Representative of the cargo vessel type, the “Series 60 CB=0.6” ship hull was chosen as our validation case due to the availability of extensive towing tank experimental data and literature. In our study, a 1 m long hull model was jump started to a velocity of 1m/s. The steady-state Froude # was at 0.316 and the Reynolds # was at 100,000. Similar to the Wigley hull model, an unsteady RANS model with the Volume of Fluid (VOF) approach was utilized. The time for the wave profiles to evolve and settle was 8 seconds. |
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The wave contours were compared against digitized experimental data. The first order characteristics were captured in the near field, while the far field experimental data was found to be corrupted due to existence of towing tank walls. |
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One distinction with the Wigley case is that the experiments for the Series 60 case were performed with dynamic hull attitude. In our preliminary simulation, the Series 60 hull was fixed at 0.86 degree pitch angle. |
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Time Evolutions of the Wave Profile (click to animate) |
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| Our next simulation will allow the hull to move dynamically with the hydrodynamic loads. A demonstration for a simulation demonstrating this capability for can be found here. | |
With increasing consciousness for the environment, combined with a need to find all possible efficiencies in tightening economic conditions, there is strong demand for tools to drive better ship designs. While older generation PANEL (inviscid) methods have somewhat addressed this need with serious limits, the newer RANS models are proving indispensable for the accurate representation of the interaction between waves, wind, turbulence and the inherent ship response. Hence CAEbridge is devoting significant effort into making this simulation technology more accessible to the ship design community.
