50 lines
1.6 KiB
Plaintext
50 lines
1.6 KiB
Plaintext
Overview
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========
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+ W3 example case of hydrodynamics of a planing hull
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Mesh
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====
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+ The example includes two different approaches for meshing the case
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+ The first approach uses no cell refinement in the vertical direction
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+ The second approach includes local cell refinement, producing a smaller mesh
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+ Cell refinement can cause disturbances of the interface
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+ Where refinement is present, PLIC-based schemes perform much better,
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producing far less interface disturbance than the standard interface
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compression scheme.
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+ The first approach has the advantage of avoiding interface disturbances but
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for the potential cost of a larger mesh than with local refinement
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Experimental results (ref. 1)
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=============================
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+ Velocity = 4.598 m/s
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+ Trim angle = 3.485 deg
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+ Drag = 50.691 N
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Numerical results mesh 1
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========================
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Without local refinement
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+ Velocity = 4.598 m/s
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+ Trim angle = 2.794 deg
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+ Drag = 48.616 N
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Numerical results mesh 2
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========================
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With local refinement
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+ Velocity = 4.598 m/s
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+ Trim angle = 3.027 deg
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+ Drag = 47.987 N
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Acknowledgment
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==============
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+ Thanks to Raffaele Ponzini, Ph.D. Eng. from CINECA, for kindly sharing the
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W3 hull geometry and for his valuable insight into the science of ship hulls
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References
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==========
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1. Begovic, E. and Bertorello, C., 2012. Resistance assessment of warped
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hullform. Ocean Engineering, 56, pp.28-42
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2. Ponzini, R., Salvadore, F., Begovic, E. and Bertorello, C., 2020.
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Automatic CFD Analysis Of Planing Hulls By Means Of A New Web-Based Application:
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Usage, Experimental Data Comparison And Opportunities
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