NDLI: Investigation of the flopping regime with two-, three- and four-cylinder arrays

Content Provider	Springer Nature Link
Author	Guillaume, D. W. LaRue, J. C.
Copyright Year	1999
Abstract	The variation of the base pressure coefficient (Cp), and the characteristics of the velocity power spectra for arrays of two-, three- and four-cylinders aligned normal to the flow are presented. For the two-cylinder array with s/d=0.750 (where s is the spacing between the top and bottom surfaces of adjacent cylinders and d is the diameter of the cylinder) and Re=2.5×103, peaks in the power spectra of 145 and 45 Hz which correspond to Strouhal numbers of 0.35 and 0.11 have been observed. For the three-cylinder array with Re=2.5×103, at 0.338?s/d?0.730, three quasi-stable modes are observed. For 0.730?s/d?0.850, flopping and one quasi-stable mode are observed. For 0.850?s/d?1.202, only one mode is observed. The hot-wire power spectra measured downstream of the cylinder array on the center plane between the top and center cylinder and, also on the plane at s/2 above the top cylinder has three relative peaks that correspond to a wake structure, i.e. a pattern of vortices. For the four-cylinder array, when 0.338?s/d?0.750, four quasi-stable modes are observed. First, a mode can be observed in which the average Cp value of the top cylinder is relatively high, the average Cp value of the bottom cylinder is relatively low, and the average Cp values of the two center cylinders are nearly equal. A second mode is sometimes observed that is similar to the first except that the relatively high and low average Cp values of the outer cylinders are interchanged. A third mode is observed in which the average Cp value of the upper–inner cylinder is relatively high, the average Cp value of the lower–inner cylinder is relatively low, and the average Cp values of the outer cylinders are nearly equal. A fourth mode can be observed that is similar to the third mode except that the relative high and low average Cp values of the two inner cylinders are interchanged. For 0.750?s/d?1.202, only two of these modes are observed.
Starting Page	145
Ending Page	156
Page Count	12
File Format	PDF
ISSN	07234864
Journal	Experiments in Fluids
Volume Number	27
Issue Number	2
e-ISSN	14321114
Language	English
Publisher	Springer-Verlag
Publisher Date	1999-07-02
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
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

Experimental investigation of impinging jet arrays

Experimental investigation of the flow around a radially vibrating circular cylinder

Three-dimensional vorticity in a turbulent cylinder wake

Three-dimensional vorticity in a turbulent cylinder wake

Investigation of the three-dimensional intermediate wake topology for a square cylinder at high Reynolds number

In-cylinder swirl formation process in a four-valve diesel engine

Investigation of the flow around a circular cylinder under the influence of an electromagnetic force

Investigation of the Flopping Regime of Two-, Three-, and Four-Plate Arrays

An experimental investigation of flow past a dual step cylinder

Investigation of the flopping regime with two-, three- and four-cylinder arrays

Similar Documents

Experimental investigation of impinging jet arrays

Experimental investigation of the flow around a radially vibrating circular cylinder

Three-dimensional vorticity in a turbulent cylinder wake

Three-dimensional vorticity in a turbulent cylinder wake

Investigation of the three-dimensional intermediate wake topology for a square cylinder at high Reynolds number

In-cylinder swirl formation process in a four-valve diesel engine

Investigation of the flow around a circular cylinder under the influence of an electromagnetic force

Investigation of the Flopping Regime of Two-, Three-, and Four-Plate Arrays

An experimental investigation of flow past a dual step cylinder

Investigation of the flopping regime with two-, three- and four-cylinder arrays