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Drag reduction by using the microriblet of sawtooth and scalloped types

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Heidarian, A, Ghassemi, H and Liu, P ORCID: 0000-0003-2158-5442 2018 , 'Drag reduction by using the microriblet of sawtooth and scalloped types' , International Journal of Physics, vol. 6, no. 3 , pp. 93-98 , doi: 10.12691/ijp-6-3-5.

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Abstract

Nowadays, considering the importance of the drag reduction and increasing the speed is demand of all owners. In the field of marine industry, there should be an ongoing attempt to reduce fuel consumption of the marine vehicles. In this research, nature has been used as a guide to reach our target. Study of the skin of the fast marine’s faunas such as sharks and dolphins has generated the idea of riblet covered surfaces. Two various types of the riblets surfaces (sawtooth and scalloped) which are studied in this research. The microriblets are applied on the flat plate and investigated the effects on hydrodynamics parameters through the computational fluid dynamics method in ANSYS CFX. The results have been validated with the experimental results. By comparing the drag coefficient of simple flat plate with riblet one, it is concluded that riblets diminish drag force about 11% and raise lift about 6 % relative to the simple flat plate.

Item Type: Article
Authors/Creators:Heidarian, A and Ghassemi, H and Liu, P
Keywords: drag reduction, micro riblet, computational fluid dynamics, lift force
Journal or Publication Title: International Journal of Physics
Publisher: Science and Education Publishing Co. Ltd.
ISSN: 2333-4568
DOI / ID Number: 10.12691/ijp-6-3-5
Copyright Information:

Copyright 2018 Science and Education Publishing. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

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