Sökning: AMNE:(ENGINEERING AND TECHNOLOGY) AMNE:(Mechanical Engineering) AMNE:(Fluid Mechanics and Acoustics)
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Experimental and nu...
Experimental and numerical investigations of propeller open water characteristics in calm water and regular head waves
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- Irannezhad, Mohsen, 1990 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden
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- Kjellberg, Martin, 1983 (författare)
- RISE,Maritima avdelningen,RISE Research Institutes of Sweden
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- Bensow, Rickard, 1972 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden
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visa fler...
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- Eslamdoost, Arash, 1982 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden
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visa färre...
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(creator_code:org_t)
- Elsevier Ltd, 2024
- 2024
- Engelska.
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Ingår i: Ocean Engineering. - : Elsevier Ltd. - 0029-8018 .- 1873-5258. ; 302
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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https://ri.diva-port... (primary) (Raw object)
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https://doi.org/10.1...
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https://research.cha...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Propeller Open Water (POW) performance of a non-ventilating and fully-submerged propeller in model-scale is investigated in calm water and regular head waves using experimental tests (EFD) and Computational Fluid Dynamics (CFD). Laminar flow dominance is observed in calm water, particularly at higher advance ratios. Nevertheless, the findings in waves suggest increased turbulence, stemming from both the wave orbital velocities and the presumably increased turbulence level produced by the wave maker in the towing tank. Analysis of the CFD results obtained from the incident flow field and single-blade force and moment leads to the speculation that the observed discrepancies are associated with the inevitable asymmetric conditions and mechanical interference in the experiments which were absent in CFD. These can potentially alter the flow over the blades resulting in a different flow transition, separation, and coherent turbulent structure formation and hence forces and moments. The altered propeller performance in waves in comparison to calm water underlines the significance of waves on the propulsive factors and propeller design.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Water Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Farkostteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Marin teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Marine Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
Nyckelord
- Regular head waves
- Verification and validation
- Torque
- Thrust
- CFD
- EFD
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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