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Hull–propeller inte...
Hull–propeller interaction for planing boats : a numerical study
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Roshan, F. (författare)
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- Dashtimanesh, Abbas (författare)
- Estonian Maritime Academy, Tallinn University of Technology, Tallinn, Estonia
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Tavakoli, S. (författare)
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Niazmand, R. (författare)
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Abyn, H. (författare)
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(creator_code:org_t)
- 2020-07-12
- 2020
- Engelska.
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Ingår i: Ships and Offshore Structures. - : Taylor and Francis Ltd.. - 1744-5302 .- 1754-212X. ; , s. 1-13
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Numerical simulations are performed to study the interaction between propeller and hull for two planing vessels: a hard-chine and a tunnelled craft. The numerical model used for reproduction of the problem is validated by comparing the obtained results against published data, showing that a morphing technique is more reliable compared to an overset one. It is demonstrated that propellers strongly affect the performance of a vessel by increasing trim angle and decreasing resistance, which are caused by a noticeable pressure reduction occurring near propellers. These changes are more significant for the case of a tunnelled hull since hydrodynamic pressure acting on the bottom of this vessel is larger compared to a hard-chine craft. While resistance of hulls is seen to be influenced by variation in the position of the propellers at early-planing mode, trim angle is seen to be insensitive to the position of propellers at all speeds.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
Nyckelord
- numerical simulation
- planing hull
- Propeller–hull interaction
- tunnelled hull
- virtual disc theory
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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