NDLI: Drag reduction of square cylinders with cut-corners at the front edges

Content Provider	Springer Nature Link
Author	He, Guo Sheng Li, Nian Wang, Jin Jun
Copyright Year	2014
Abstract	Flow around square cylinders with cut-corners at the front edges is investigated using particle image velocimetry. It is found that drag reduction can be achieved for the tested cut-corner dimensions. The mechanism for the drag reduction is explored on the statistical and structural aspects of the flow. After cutting the corners, the fluctuation intensity of the wake is weakened, the length of the recirculation region behind the square cylinder is increased, while the width of the wake decreases. It is found that the drag coefficient is proportional to the minimum wake width, and the Strouhal number St is inversely proportional to the minimum wake width. It is revealed that the reduced wake width is due to the suppressed separation over the side surfaces for the cylinders with cut-corners at the front edges. On the structural aspect, the phase-averaged flow field and the modes from proper orthogonal decomposition both indicate a decrease in the wake vortex size. A statistical analysis of instantaneous vortices based on Oseen vortex fit reveals that not only the size of the vortex is reduced, but also the strength is weakened.
Starting Page	1
Ending Page	11
Page Count	11
File Format	PDF
ISSN	07234864
Journal	Experiments in Fluids
Volume Number	55
Issue Number	6
e-ISSN	14321114
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-05-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Engineering Fluid Dynamics Fluid- and Aerodynamics Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Fluid Flow and Transfer Processes Physics and Astronomy Mechanics of Materials Computational Mechanics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Flow around two tandem square cylinders near a plane wall

Frictional drag reduction by bubble injection

Circular cylinders with soft porous cover for flow noise reduction

Aerodynamic drag reduction by vertical splitter plates

Drag reduction using superhydrophobic sanded Teflon surfaces

Bluff-body drag reduction using a deflector

Drag reduction of square cylinders with cut-corners at the front edges

Superhydrophobic drag reduction in laminar flows: a critical review

Mechanisms of drag reduction of superhydrophobic surfaces in a turbulent boundary layer flow

Drag reduction of square cylinders with cut-corners at the front edges

Similar Documents

Flow around two tandem square cylinders near a plane wall

Frictional drag reduction by bubble injection

Circular cylinders with soft porous cover for flow noise reduction

Aerodynamic drag reduction by vertical splitter plates

Drag reduction using superhydrophobic sanded Teflon surfaces

Bluff-body drag reduction using a deflector

Drag reduction of square cylinders with cut-corners at the front edges

Superhydrophobic drag reduction in laminar flows: a critical review

Mechanisms of drag reduction of superhydrophobic surfaces in a turbulent boundary layer flow

Drag reduction of square cylinders with cut-corners at the front edges