Numerical study on the influence of chord length of the foil and pipe diameter on winged air induction pipe optimization toward drag reduction

Yanuar, M. Akbar, Muhammad Alief, Fatimatuzzahra, Gunawan, Ravi R. Mufti

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Drag reduction on the ship with an air lubrication method using microbubble started since the late 19th century. However, its application in industry obstructed because the net power-saving only reach 0-5% in the consequences of the energy needed by the air compressor to blow the air to the keel of the ship. A new device named Winged Air Induction Pipe (WAIP) uses the negative pressure produced by angled hydrofoil to suck atmospheric air into the water generating bubble without compressor needed. Interaction between the diameter of the pipe and the hydrofoil chord length influence the drag reduction occurred. The Computational Fluid Dynamics (CFD) approach by 'volume of fluid' model and SST k-ω turbulence closure model on 2D boundary condition, used to observe how these two variable affects the result. In the discussion, the correlation between those variables gives the maximum efficiency to the ship. On the optimum range, drag reduction can reach 9.5%.

Original languageEnglish
Title of host publication4th International Tropical Renewable Energy Conference, i-TREC 2019
EditorsEny Kusrini, I. Gde Dharma Nugraha
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420144
DOIs
Publication statusPublished - 3 Sep 2020
Event4th International Tropical Renewable Energy Conference 2019, i-TREC 2019 - Bali, Indonesia
Duration: 14 Aug 201916 Aug 2019

Publication series

NameAIP Conference Proceedings
Volume2255
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference4th International Tropical Renewable Energy Conference 2019, i-TREC 2019
Country/TerritoryIndonesia
CityBali
Period14/08/1916/08/19

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