Numerical study on natural convection in a ship cargo tank

K. Sahin; S. Ergin

Numerical study on natural convection in a ship cargo tank

K. Sahin, S. Ergin

Department of Naval Architecture and Marine Engineering

Istanbul Technical University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A numerical study is carried out to investigate the natural convection in a ship cargo tank that is filled with high viscosity fluid such as heavy fuel oil. The effects of Rayleigh numbers and turbulence on the flow field and average Nusselt numbers are studied. Governing equations are solved by using the finite volume method which is incorporated in Ansys-Fluent computational fluid dynamics program. The average Nusselt numbers and the distributions of the local Nusselt number on the isothermal walls are obtained. The scaling laws between the Nusselt number and Rayleigh number are presented for 10³ ≤ Ra ≤ 10⁹. The turbulence effects on the Nusselt number is found to be high when the Ra number is higher than 10⁸. It has been observed that the local Nusselt number values along the hot wall decrease quickly. Furthermore, the effect of Rayleigh number on heat transfer is found to be significant.

Original language	English
Title of host publication	Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019
Editors	Petar Georgiev, C. Guedes Soares
Publisher	CRC Press/Balkema
Pages	512-519
Number of pages	8
ISBN (Print)	9780367409517
Publication status	Published - 2020
Event	18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019 - Varna, Bulgaria Duration: 9 Sept 2019 → 11 Sept 2019

Publication series

Name	Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019

Conference

Conference	18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019
Country/Territory	Bulgaria
City	Varna
Period	9/09/19 → 11/09/19

Bibliographical note

Publisher Copyright:
© 2020 Taylor & Francis Group, London.

Cite this

Sahin, K., & Ergin, S. (2020). Numerical study on natural convection in a ship cargo tank. In P. Georgiev, & C. G. Soares (Eds.), Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019 (pp. 512-519). (Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019). CRC Press/Balkema.

Sahin, K. ; Ergin, S. / Numerical study on natural convection in a ship cargo tank. Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019. editor / Petar Georgiev ; C. Guedes Soares. CRC Press/Balkema, 2020. pp. 512-519 (Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019).

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title = "Numerical study on natural convection in a ship cargo tank",

abstract = "A numerical study is carried out to investigate the natural convection in a ship cargo tank that is filled with high viscosity fluid such as heavy fuel oil. The effects of Rayleigh numbers and turbulence on the flow field and average Nusselt numbers are studied. Governing equations are solved by using the finite volume method which is incorporated in Ansys-Fluent computational fluid dynamics program. The average Nusselt numbers and the distributions of the local Nusselt number on the isothermal walls are obtained. The scaling laws between the Nusselt number and Rayleigh number are presented for 103 ≤ Ra ≤ 109. The turbulence effects on the Nusselt number is found to be high when the Ra number is higher than 108. It has been observed that the local Nusselt number values along the hot wall decrease quickly. Furthermore, the effect of Rayleigh number on heat transfer is found to be significant.",

author = "K. Sahin and S. Ergin",

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year = "2020",

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Sahin, K & Ergin, S 2020, Numerical study on natural convection in a ship cargo tank. in P Georgiev & CG Soares (eds), Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019. Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019, CRC Press/Balkema, pp. 512-519, 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019, Varna, Bulgaria, 9/09/19.

Numerical study on natural convection in a ship cargo tank. / Sahin, K.; Ergin, S.
Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019. ed. / Petar Georgiev; C. Guedes Soares. CRC Press/Balkema, 2020. p. 512-519 (Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Numerical study on natural convection in a ship cargo tank

AU - Sahin, K.

AU - Ergin, S.

PY - 2020

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N2 - A numerical study is carried out to investigate the natural convection in a ship cargo tank that is filled with high viscosity fluid such as heavy fuel oil. The effects of Rayleigh numbers and turbulence on the flow field and average Nusselt numbers are studied. Governing equations are solved by using the finite volume method which is incorporated in Ansys-Fluent computational fluid dynamics program. The average Nusselt numbers and the distributions of the local Nusselt number on the isothermal walls are obtained. The scaling laws between the Nusselt number and Rayleigh number are presented for 103 ≤ Ra ≤ 109. The turbulence effects on the Nusselt number is found to be high when the Ra number is higher than 108. It has been observed that the local Nusselt number values along the hot wall decrease quickly. Furthermore, the effect of Rayleigh number on heat transfer is found to be significant.

AB - A numerical study is carried out to investigate the natural convection in a ship cargo tank that is filled with high viscosity fluid such as heavy fuel oil. The effects of Rayleigh numbers and turbulence on the flow field and average Nusselt numbers are studied. Governing equations are solved by using the finite volume method which is incorporated in Ansys-Fluent computational fluid dynamics program. The average Nusselt numbers and the distributions of the local Nusselt number on the isothermal walls are obtained. The scaling laws between the Nusselt number and Rayleigh number are presented for 103 ≤ Ra ≤ 109. The turbulence effects on the Nusselt number is found to be high when the Ra number is higher than 108. It has been observed that the local Nusselt number values along the hot wall decrease quickly. Furthermore, the effect of Rayleigh number on heat transfer is found to be significant.

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M3 - Conference contribution

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SN - 9780367409517

T3 - Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019

SP - 512

EP - 519

BT - Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019

A2 - Georgiev, Petar

A2 - Soares, C. Guedes

PB - CRC Press/Balkema

T2 - 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019

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ER -

Sahin K, Ergin S. Numerical study on natural convection in a ship cargo tank. In Georgiev P, Soares CG, editors, Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019. CRC Press/Balkema. 2020. p. 512-519. (Sustainable Development and Innovations in Marine Technologies - Proceedings of the 18th International Congress of the International Maritime Association of the Mediterranean, IMAM 2019).

Numerical study on natural convection in a ship cargo tank

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