Simulation of effect of various distances between front and rear body on drag of a non-circular cylinder

Numerical investigation of a non-circular cylinder (D-shaped bluff body) of fore body, geometrical effects on the drag as well as on the flow-field were simulated at the subcritical flow regime at a velocity of 26.84 m/s. The non-circular cylinder (D-shaped model) front surface for a positive press...

Full description

Bibliographic Details
Main Authors:	Sajali, Muhammad Fahmi Mohd, Syed, Ashfaq, Aabid, Abdul, Khan, Sher Afghan
Format:	Article
Language:	English English
Published:	academia Baru 2019
Subjects:	TL1 Motor vehicles
Online Access:	http://irep.iium.edu.my/75665/ http://irep.iium.edu.my/75665/ http://irep.iium.edu.my/75665/1/ARFMTSV62_N1_P53_65.pdf http://irep.iium.edu.my/75665/7/75665_Simulation%20of%20effect%20of%20various%20distances%20between%20front%20and%20rear%20body%20on%20drag%20of%20a%20non-circular%20cylinder_Scopus.pdf

id	iium-75665
recordtype	eprints
spelling	iium-756652020-03-11T00:25:53Z http://irep.iium.edu.my/75665/ Simulation of effect of various distances between front and rear body on drag of a non-circular cylinder Sajali, Muhammad Fahmi Mohd Syed, Ashfaq Aabid, Abdul Khan, Sher Afghan TL1 Motor vehicles Numerical investigation of a non-circular cylinder (D-shaped bluff body) of fore body, geometrical effects on the drag as well as on the flow-field were simulated at the subcritical flow regime at a velocity of 26.84 m/s. The non-circular cylinder (D-shaped model) front surface for a positive pressure of the unsteady vortex generation in the near wake, the square plate was attached upstream of the non-circular cylinder as the base model. The forebody modifies the streamlines that separate from its edges to attach smoothly onto the front face shoulders of the main body, thereby converting the bluff body into an equivalent streamlined body, resulting in minimum drag. The height of the forebody (B1) is 25 mm, and the length of the front body (L2), was in the range from 0.25B2 to 1.75B2. The results obtained from the simulation are compared with the experimental results. The results indicate that the side faces and the rear faces are subjected to low pressure, whereas the front face is experiencing high positive pressure. With this flow pattern, the pressure drag coefficient assumes a substantially significant value in the range of 1.0 - 1.42. Such a high value of drag coefficient is particularly valid for bluff bodies with noncircular cross-sections with the sharp corners. academia Baru 2019-10-25 Article PeerReviewed application/pdf en http://irep.iium.edu.my/75665/1/ARFMTSV62_N1_P53_65.pdf application/pdf en http://irep.iium.edu.my/75665/7/75665_Simulation%20of%20effect%20of%20various%20distances%20between%20front%20and%20rear%20body%20on%20drag%20of%20a%20non-circular%20cylinder_Scopus.pdf Sajali, Muhammad Fahmi Mohd and Syed, Ashfaq and Aabid, Abdul and Khan, Sher Afghan (2019) Simulation of effect of various distances between front and rear body on drag of a non-circular cylinder. Advanced Research in Fluid Mechanics and Thermal Sciences, 62 (1). pp. 53-65. ISSN 2289-7879 http://www.akademiabaru.com/arfmts.html
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TL1 Motor vehicles
spellingShingle	TL1 Motor vehicles Sajali, Muhammad Fahmi Mohd Syed, Ashfaq Aabid, Abdul Khan, Sher Afghan Simulation of effect of various distances between front and rear body on drag of a non-circular cylinder
description	Numerical investigation of a non-circular cylinder (D-shaped bluff body) of fore body, geometrical effects on the drag as well as on the flow-field were simulated at the subcritical flow regime at a velocity of 26.84 m/s. The non-circular cylinder (D-shaped model) front surface for a positive pressure of the unsteady vortex generation in the near wake, the square plate was attached upstream of the non-circular cylinder as the base model. The forebody modifies the streamlines that separate from its edges to attach smoothly onto the front face shoulders of the main body, thereby converting the bluff body into an equivalent streamlined body, resulting in minimum drag. The height of the forebody (B1) is 25 mm, and the length of the front body (L2), was in the range from 0.25B2 to 1.75B2. The results obtained from the simulation are compared with the experimental results. The results indicate that the side faces and the rear faces are subjected to low pressure, whereas the front face is experiencing high positive pressure. With this flow pattern, the pressure drag coefficient assumes a substantially significant value in the range of 1.0 - 1.42. Such a high value of drag coefficient is particularly valid for bluff bodies with noncircular cross-sections with the sharp corners.
format	Article
author	Sajali, Muhammad Fahmi Mohd Syed, Ashfaq Aabid, Abdul Khan, Sher Afghan
author_facet	Sajali, Muhammad Fahmi Mohd Syed, Ashfaq Aabid, Abdul Khan, Sher Afghan
author_sort	Sajali, Muhammad Fahmi Mohd
title	Simulation of effect of various distances between front and rear body on drag of a non-circular cylinder
title_short	Simulation of effect of various distances between front and rear body on drag of a non-circular cylinder
title_full	Simulation of effect of various distances between front and rear body on drag of a non-circular cylinder
title_fullStr	Simulation of effect of various distances between front and rear body on drag of a non-circular cylinder
title_full_unstemmed	Simulation of effect of various distances between front and rear body on drag of a non-circular cylinder
title_sort	simulation of effect of various distances between front and rear body on drag of a non-circular cylinder
publisher	academia Baru
publishDate	2019
url	http://irep.iium.edu.my/75665/ http://irep.iium.edu.my/75665/ http://irep.iium.edu.my/75665/1/ARFMTSV62_N1_P53_65.pdf http://irep.iium.edu.my/75665/7/75665_Simulation%20of%20effect%20of%20various%20distances%20between%20front%20and%20rear%20body%20on%20drag%20of%20a%20non-circular%20cylinder_Scopus.pdf
first_indexed	2023-09-18T21:47:03Z
last_indexed	2023-09-18T21:47:03Z
_version_	1777413519441920000

Simulation of effect of various distances between front and rear body on drag of a non-circular cylinder

Similar Items