Effect of mesh on CFD aerodynamic performances of a container ship

Ngo Van He, Le Thi Thai
Author affiliations

Authors

  • Ngo Van He Hanoi University of Science and Technology, Hanoi, Vietnam
  • Le Thi Thai Hanoi University of Science and Technology, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/20/3/15249

Keywords:

CFD, mesh, container ship, aerodynamic performance, hull.

Abstract

In this paper, a commercial CFD code, ANSYS-Fluent has been used to investigate the effect of mesh number generated in the computed domain on the CFD aerodynamic performances of a container ship. A full-scale model of the 1200TEU container ship has been chosen as a reference model in the computation. Five different mesh numbers for the same dimension domain have been used and the CFD aerodynamic performances of the above water surface hull of the ship have been shown. The obtained CFD results show a remarkable effect of mesh number on aerodynamic performances of the ship and the mesh convergence has been found. The study is an evidence to prove that the mesh number has affected the CFD results in general and the accuracy of the CFD aerodynamic performances in particular.

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References

ITTC, R., 2011. procedures and guidelines: practical guidelines for ship CFD applications, 7.5.

Janssen, W. D., Blocken, B., and van Wijhe, H., 2017. CFD simulations of wind loads on a container ship: Validation and impact of geometrical simplifications. Journal of Wind Engineering and Industrial Aerodynamics, 166, 106–116. https://doi.org/10.1016/j.jweia.2017.03.015. DOI: https://doi.org/10.1016/j.jweia.2017.03.015

Watanabe, I., Van Nguyen, T., Miyake, S., Shimizu, N., and Ikeda, Y., 2016. A study on reduction of air resistance acting on a large container ship. Proceeding of APHydro 2016, 321–330.

Nguyen, T. V., Shimizu, N., Kinugawa, A., Tai, Y., and Ikeda, Y., 2017. Numerical studies on air resistance reduction methods for a large container ship with fully loaded deck-containers in oblique winds. In Proceeding of VII International Conference on Computational Methods in Marine Engineering, MARINE (pp. 1040–1051).

Kim, Y., Kim, K. S., Jeong, S. W., Jeong, S. G., Van, S. H., Kim, Y. C., and Kim, J., 2015. Design and performance evaluation of superstructure modification for air drag reduction of a container ship. In The Twenty-fifth International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers. DOI: https://doi.org/10.3744/SNAK.2015.52.1.8

Andersen, I. M. V., 2013. Wind loads on post-panamax container ship. Ocean engineering, 58, 115–134. https://doi.org/10.1016/j.oceaneng.2012.10.008. DOI: https://doi.org/10.1016/j.oceaneng.2012.10.008

Ngo Van He, B. D. T., 2018. Effect of Accommodation and container on air resistance acting on hull of the container ship. In The first international conference on fluid machinery and automation systems. pp. 437–440.

Wnęk, A. D., and Soares, C. G., 2015. CFD assessment of the wind loads on an LNG carrier and floating platform models. Ocean Engineering, 97, 30–36. https://doi.org/10.1016/j.oceaneng.2015.01.004. DOI: https://doi.org/10.1016/j.oceaneng.2015.01.004

He, N. V., and Ikeda, Y., 2013. A study on interaction effects between hull and accommodation on air resistance of a ship. In: Proceedings of the 16th Japan Society of Naval Architects and Ocean Engineering, (16), 281–284.

Van He, N., Mizutani, K., and Ikeda, Y., 2016. Reducing air resistance acting on a ship by using interaction effects between the hull and accommodation. Ocean Engineering, 111, 414–423. https://doi.org/10.1016/j.oceaneng.2015.11.023. DOI: https://doi.org/10.1016/j.oceaneng.2015.11.023

Kha T. N, Tuan N. M, He N. V, 2018. Effect of an accommodation shape on aerodynamic performance and reduced air resistance acting on a cargo river ship. Journal of Science and Technology, Thai Nguyen University, 189(13), 217–222.

Van He, N., Mizutani, K., and Ikeda, Y., 2019. Effects of side guards on aerodynamic performances of the wood chip carrier. Ocean Engineering, 187, 106217. https://doi.org/10.1016/j.oceaneng.2019.106217. DOI: https://doi.org/10.1016/j.oceaneng.2019.106217

Toan, N. C., and Van He, N., 2018. Effect of hull and accommodation shape on aerodynamic performances of a small ship. Vietnam Journal of Marine Science and Technology, 18(4), 413–421. https://doi.org/10.15625/1859-3097/18/4/13292. DOI: https://doi.org/10.15625/1859-3097/18/4/13292

Bertram, V., 2011. Practical ship hydrodynamics. Elsevier.

Saydam, A. Z., and Taylan, M., 2018. Evaluation of wind loads on ships by CFD analysis. Ocean Engineering, 158, 54–63. https://doi.org/10.1016/j.oceaneng.2018.03.071. DOI: https://doi.org/10.1016/j.oceaneng.2018.03.071

He N. V, Loi L. N, Quang L., 2015. A study on improving economy efficiency of container ship by reducing resistance acting on hull. The Transport Journal, 56, 217–219.

Pope, S. B., 2001. Turbulent flows. IOP Publishing. DOI: https://doi.org/10.1017/CBO9780511840531

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Published

30-09-2020

How to Cite

He, N. V., & Thai, L. T. (2020). Effect of mesh on CFD aerodynamic performances of a container ship. Vietnam Journal of Marine Science and Technology, 20(3), 343–353. https://doi.org/10.15625/1859-3097/20/3/15249

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