A Study on Development of a New Concept Cargo River Ship with Reduced Resistance Acting on Hull in Calm Water
Main Article Content
Abstract
In this paper, a new hull form is developed for the cargo river ship with a drastically reduced viscous resistance by using Air Circular Tank (ACT) and small air resistance hull form by using CFD (Computation Fluid Dynamic). At first, viscous resistance acting on the new hull is calculated and compared with those of the experimental results to validate the CFD results. Then, ACT is attached on the ship, resistance acting on the new hull is computed by the CFD. Simulated results as pressures distribution around hull, viscous resistance acting on the hull with and without ACT are compared at others. Secondly, air resistance is computed by the CFD. From results of pressure, velocity distribution around hull and air resistance, a new hull shape is developed. The CFD results as pressure distribution and resistances are useful to understand what happened at the ACT. And so on, the problems as the interaction effects between accommodation and hull, effects of hull shape on resistances are found in this paper.
Keywords
New concept ship, ACT, CFD, Viscous Resistance; Air resistance
Article Details
References
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[19] T. Tatsumi et al., Development of a new energy saving tanker with non ballast water Part 1. The JSNAOE, Fukuoka, (2011) 216-218. (in Japanese)
[20] A. Tomita et al., Development of a new energy saving tanker with non ballast water Part 2. The JSNAOE, Fukuoka, (2011) 219-222. (in Japanese)
[21] N.V. He, Y. Ikeda, Optimization of bow shape for Non Ballast Water ship. Journal of Marine Science and Application, Vol. 12 No3 (2013) pp. 251-260.
[22] N.V. He, Y. Ikeda, Added resistance acting on hull of a non ballast water ship, Journal of Marine Science and Application, Vol. 13 Nol (2014) pp. 11-12.
[23] H.K. Versteeg et al., An Introduction to Computational Fluid Dynamics. The Finite Volume Method, 2nd Edition, Pearson Education (2015).
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