Design and Study of Steady and Unsteady Flow around Open and Close Marine Propeller by SRANS and URANS Models

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Karami Saeed; MALEKI ALI; Hadipor Godarzi Rohollah; ALIZADEH EBRAHIM

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Paper Information

Journal: JOURNAL OF MECHANICAL ENGINEERING Year:2020 | Volume:50 | Issue:3 (92) Page(s): 185-194

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Title

Design and Study of Steady and Unsteady Flow around Open and Close Marine Propeller by SRANS and URANS Models

Author(s)

Karami Saeed | MALEKI ALI | Hadipor Godarzi Rohollah | ALIZADEH EBRAHIM | Issue Writer Certificate

Keywords

Marine Propeller

Propeller Wake

Laminar and Turbulent Boundary layer

Open and Close Propeller

Computational Fluid Dynamics

Abstract

In this research, a standard propeller was designed for a surface vessel, then using a computer program, 3D propeller geometry based on two-dimensional data generated and griding and flow field around the propeller was solved based on the Computational Fluid Dynamics method. In this regard, we used a hybrid grid and periodic condition based on a spline Cutting. A steady model and three unsteady models were used in the numerical modeling. The results were validated and uncertainty grid discretization error was calculated. The results were in good agreement with the results of open water, an estimated separation point and Propeller Wake were investigated. In order to modeling the transition of the boundary layer, two models of gamma and 𝛾 − 𝑅 𝑒 𝜃 transition were used. The Q criterion was used to detection vortices and wakes. The separation of flow and transition of the boundary layer from laminar to turbulent in high advanced coefficients in the unsteady models was different of the steady model. The effects of adding two standard duct with 19A and 37A with open propeller were compared that 19A duct had better hydrodynamic properties.

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APA: Copy

Karami, Saeed, MALEKI, ALI, Hadipor Godarzi, Rohollah, & ALIZADEH, EBRAHIM. (2020). Design and Study of Steady and Unsteady Flow around Open and Close Marine Propeller by SRANS and URANS Models. JOURNAL OF MECHANICAL ENGINEERING, 50(3 (92) ), 185-194. SID. https://sid.ir/paper/269861/en

Vancouver: Copy

Karami Saeed, MALEKI ALI, Hadipor Godarzi Rohollah, ALIZADEH EBRAHIM. Design and Study of Steady and Unsteady Flow around Open and Close Marine Propeller by SRANS and URANS Models. JOURNAL OF MECHANICAL ENGINEERING[Internet]. 2020;50(3 (92) ):185-194. Available from: https://sid.ir/paper/269861/en

IEEE: Copy

Saeed Karami, ALI MALEKI, Rohollah Hadipor Godarzi, and EBRAHIM ALIZADEH, “Design and Study of Steady and Unsteady Flow around Open and Close Marine Propeller by SRANS and URANS Models,” JOURNAL OF MECHANICAL ENGINEERING, vol. 50, no. 3 (92) , pp. 185–194, 2020, [Online]. Available: https://sid.ir/paper/269861/en

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