Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
2.8
1.9
Journals
Fluids
Special Issues
Supercavitation
share announcement

Supercavitation

A special issue of Fluids (ISSN 2311-5521).

Deadline for manuscript submissions: closed (15 November 2021) | Viewed by 3280

Special Issue Editor

Prof. Dr. Byoung-Kwon Ahn

E-Mail Website
Guest Editor
Department of Naval Architecture & Ocean Engineering, College of Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejon 34134, Republic of Korea
Interests: turbulence structures and wall pressure fluctuations; hydro-acoustics; flow-induced-noise control; marine propeller design; propeller cavitation and noise; supercavitation

Special Issue Information

Dear Colleagues,

Supercavitation is the use of a long, stable cavity to reduce skin friction drag on a submerged object and enable high speeds over 200 knots. This technique could be applicable to underwater vessels including torpedoes. Six key technologies are responsible for enabling supercavitating vehicles: i) a cavitator to initiate the supercavity, ii) ventilation to extend the cavity and reduce unsteady forces acting on a body, iii) a water-reactive propulsion system, iv) miniature sensors and v) advanced signal processing for guidance, and vi) control vehicle dynamics.

This Special Issue of Fluids on Supercavitation is dedicated to publishing original numerical and experimental works that increase our basic understanding of supercavitating flow and its application to engineering problems.

Prof. Dr. Byoung-Kwon Ahn
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fluids is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • natural supercavitation
  • artificial or ventilated supercavitation
  • supercavitating flow visualization
  • hot-gas-injected supercavitation and thermal effects
  • experimental measurements
  • numerical simulation
  • theoretical modeling and analysis
  • supercavitating vehicle design
  • supercavitating vehicle control

Published Papers (1 paper)

Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

13 pages, 3529 KiB  
Article
Numerical Investigation of High-Reynolds-Number Air-Ventilated Water Flow under Solid Body with Surface Geometry Variations
by Konstantin I. Matveev and Jeffrey M. Collins
Fluids 2021, 6(5), 174; https://0-doi-org.brum.beds.ac.uk/10.3390/fluids6050174 - 29 Apr 2021
Cited by 6 | Viewed by 1913
Abstract
Air-ventilated cavities formed under or around the hulls of marine vehicles can reduce water drag. Hull configurations with partial air ventilation where air cavities reattach to body surfaces are of special practical interest, since the required air supply rates to achieve significant drag [...] Read more.
Air-ventilated cavities formed under or around the hulls of marine vehicles can reduce water drag. Hull configurations with partial air ventilation where air cavities reattach to body surfaces are of special practical interest, since the required air supply rates to achieve significant drag reduction can be made rather low. However, formation and stability of such air cavities are sensitive to the hull geometry and operational conditions. In this study, an attempt is made to numerically simulate one setup with a partial air cavity that was previously tested experimentally at high Reynolds numbers, above 50 million. A computational fluid dynamics software Star-CCM+ has been employed for numerical modeling. Stable and unstable states of the air-cavity setup, characterized by long and collapsing air cavities, respectively, were modeled at two air supply rates near the stability boundary. Numerical results were similar to experimental data at the optimal water speed for the tested geometry, when a long air cavity was sustained at a minimal air supply rate. For water speeds that were substantially higher or lower than the optimal case, a stable cavity could not be maintained with small air supply rates for the given hull geometry. Numerical simulations demonstrated how alterations of the body surface could help sustain long air cavities across a broader speed range using air supply rates that were similar to the optimal case. These findings suggest that morphing hull surfaces can potentially be used for control of drag-reducing air cavities and expand the viable operating range for their application to marine vehicles. Full article
(This article belongs to the Special Issue Supercavitation)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-1
Back to TopTop