Numerical Investigation of Effect of Arrangement of Generators on Flow over a Suboff Submrine Model

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FARAJOLLAHI AMIR HAMZEH; DEHGHAN MANSHADI MOJTABA; HEJRANFAR KAZEM

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Journal: JOURNAL OF MARINE ENGINEERING Year:2019 | Volume:14 | Issue:28 Page(s): 21-29

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Title

Numerical Investigation of Effect of Arrangement of Generators on Flow over a Suboff Submrine Model

Author(s)

FARAJOLLAHI AMIR HAMZEH | DEHGHAN MANSHADI MOJTABA | HEJRANFAR KAZEM | Issue Writer Certificate

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Abstract

The vortex generated around a submarine has an important influence on the uniformity of the submarine wake at the propeller and hydrodynamic noise. A suitable way to reduce the effects of this separated flow is to use vortex generators. Vortex generators have different arrangement such as counter-rotating and co-rotating. The main goal of the present study is to investigate the flow field around a standard underwater model employing the vortex generator with different arrangement by using the CFD method (OpenFOAM code) in 0° ≤ α ≤ 30° angles of attack. In this study، the application of CFD simulation which can help us to precisely study the structure of vortical flow field. The results show that counter-rotating vortex generators placed along the submarine do indeed significantly reduce strength of the vortex، line separation، size of cross-flow vortices and drag force. The amount of the drag reduction for the counter-rotating vortex generator is approximately 14% in α =30° and approximately 21% in β =30° .

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APA: Copy

FARAJOLLAHI, AMIR HAMZEH, DEHGHAN MANSHADI, MOJTABA, & HEJRANFAR, KAZEM. (2019). Numerical Investigation of Effect of Arrangement of Generators on Flow over a Suboff Submrine Model. JOURNAL OF MARINE ENGINEERING, 14(28 ), 21-29. SID. https://sid.ir/paper/61004/en

Vancouver: Copy

FARAJOLLAHI AMIR HAMZEH, DEHGHAN MANSHADI MOJTABA, HEJRANFAR KAZEM. Numerical Investigation of Effect of Arrangement of Generators on Flow over a Suboff Submrine Model. JOURNAL OF MARINE ENGINEERING[Internet]. 2019;14(28 ):21-29. Available from: https://sid.ir/paper/61004/en

IEEE: Copy

AMIR HAMZEH FARAJOLLAHI, MOJTABA DEHGHAN MANSHADI, and KAZEM HEJRANFAR, “Numerical Investigation of Effect of Arrangement of Generators on Flow over a Suboff Submrine Model,” JOURNAL OF MARINE ENGINEERING, vol. 14, no. 28 , pp. 21–29, 2019, [Online]. Available: https://sid.ir/paper/61004/en

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