self-similarity in the equation of motion of a ship

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ID: 132689
2014
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Abstract
If we want to analyze the motion of a body in fluid, we should use rigid-body dynamics and fluid dynamics together. Even if the rigid-body and fluid dynamics are each self-consistent, there arises the problem of self-similar structure in the equation of motion when the two dynamics are coupled with each other. When the added mass is greater than the mass of a body, the calculated motion is divergent because of its self-similar structure. This study showed that the above problem is an inherent problem. This problem of self-similar structure may arise in the equation of motion in which the fluid dynamic forces are treated as external forces on the right hand side of the equation. A reconfiguration technique for the equation of motion using pseudo-added-mass was proposed to resolve the self-similar structure problem; specifically for the case when the fluid force is expressed by integration of the fluid pressure.
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lee2014internationalself-similarity Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Gyeong Joong Lee
Journal current developments in nutrition
Year 2014
DOI
10.2478/IJNAOE-2013-0183
URL
http://www.sciencedirect.com/science/article/pii/S2092678216303053
Keywords
cfd self-similarity added mass cfd self-similarity added mass renormalizationocean engineeringnaval architecture marine engineering shipbuilding

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