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Wilson, Philip A.. Numerical investigation of an influence of square cylinder crossovers on twin bare hulls in close proximity. (). King Mongkut's University of Technology North Bangkok. Central Library. : , 2016.
Numerical investigation of an influence of square cylinder crossovers on twin bare hulls in close proximity
Name: Pareecha Rattanasiri
Organization :
Burapha University. Faculty of Engineering
Email :
pareecha@eng.buu.ac.th
Name: Wilson, Philip A.
Organization :
University of Southampton. Faculty of Engineering and the Environment
ThaSH:
Computational fluid dynamics
ThaSH:
Mathematical models
ThaSH:
Equations, Simultaneous
Abstract:
This paper investigates the influence of two crossovers on twin bare spheroids in close proximity. Firstly, to examine
the impact of the crossovers to the flow behaviour and overall drag coefficient of spheroids. Secondly, to compare the
drag coefficient for various speeds. The CFD RANS-SST with a commercial code ANSYS CFX simulation is
performed for the fully submerged twin spheroids with transverse separation (S/D) of 1.02; where S is the distance
between centreline to centreline and D is the maximum diameter of a spheroid. The Reynolds Numbers used are 2 ×
106, 3 × 106, and 4 × 106. The results show that each spheroids experience an additional 20 percent drag which is dominated
by crossovers. The drag coefficient of small volume crossovers between spheroids is 10 times higher than the drag of
each spheroids, consequently, the total drag of system is increased by 11 times compares to twin bare spheroids
system. Increasing speed results in the drag reduction. At the Reynolds Number 2 × 106 shows the highest drag
coefficient of twin hulls for both cases (with or without crossovers). The result suggests the use of twin bare hulls
without crossovers in the fleet, an application; for example, a fleet of small autonomous underwater vehicles.
King Mongkut's University of Technology North Bangkok. Central Library
Address:
BANGKOK
Email:
library@kmutnb.ac.th
Created:
2016
Modified:
2026-08-31
Issued:
2026-08-31
บทความ/Article
application/pdf
BibliograpyCitation :
In Chulalongkorn University Faculty of Engineering. The 7th TSME International Conference on Mechanical Engineering 2016 (TSME-ICoME7) (CST0016). Bangkok : Chulalongkorn University
eng
©copyrights King Mongkut's University of Technology North Bangkok
RightsAccess:
ใช้เวลา
0.038484 วินาที
Pareecha Rattanasiri
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|---|---|---|
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| Influence of the cut-in sinusoidal trailing edge shape on the aerodynamic characteristics of NACA6415 and 6815 at angle of attack 5 degree
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มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Pareecha Rattanasiri;Wilson, Philip A. | บทความ/Article |
Wilson, Philip A.
| Title | Contributor | Type |
|---|---|---|
| Influence of saw-toothed and sine-curved trailing edge shape to asymmetric aerofoil
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Pakpong Jantapremjit;Pareecha Rattanasiri;Alongkod Tipsiri;Tana Arkadumnuay;Wannachat Truekhakit;Wilson, Philip A. | บทความ/Article | |
| Numerical investigation of saw-toothed and sine-curved trailing edge shape of NACA0012 aerofoil
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Pareecha Rattanasiri;Pakpong Jantapremjit;Alongkod Tipsiri;Tana Arkadumnuay;Wannachat Truekhakit;Wilson, Philip A. | บทความ/Article | |
| Numerical investigation of an influence of square cylinder crossovers on twin bare hulls in close proximity
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Pareecha Rattanasiri;Wilson, Philip A. | บทความ/Article |