The growth of swirl in curved circular pipes
dc.contributor.author | Olson, D. E. | en_US |
dc.contributor.author | Snyder, B. | en_US |
dc.date.accessioned | 2010-05-06T20:39:24Z | |
dc.date.available | 2010-05-06T20:39:24Z | |
dc.date.issued | 1983-02 | en_US |
dc.identifier.citation | Olson, D. E.; Snyder, B. (1983). "The growth of swirl in curved circular pipes." Physics of Fluids 26(2): 347-349. <http://hdl.handle.net/2027.42/69473> | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/69473 | |
dc.description.abstract | Steady secondary currents in the entry region of curved circular pipes with different curvature ratios (R/a=4.66 and 16) have been delineated at moderate Dean numbers by pulsed‐probe anemometry. When swirl is quantified using circulation loops, flow development can be scaled by the length parameter (aR)1/2. The initial growth of axial swirl seems consistent with a model of vorticity transport based on average streamline curvature, but does not progress monotonically to an asymptotic value. Instead, an abrupt relaxation occurs approximately 2(aR)1/2 downstream from the inlet, suggesting that boundary‐layer current intensifies well before the axial velocity profile can be reordered by convection. | en_US |
dc.format.extent | 3102 bytes | |
dc.format.extent | 281688 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/pdf | |
dc.publisher | The American Institute of Physics | en_US |
dc.rights | © The American Institute of Physics | en_US |
dc.title | The growth of swirl in curved circular pipes | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Pulmonary Disease Unit, Veterans Adminstration Medical Center/University of Michigan, Ann Arbor, Michigan 48105 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/69473/2/PFLDAS-26-2-347-1.pdf | |
dc.identifier.doi | 10.1063/1.864169 | en_US |
dc.identifier.source | Physics of Fluids | en_US |
dc.identifier.citedreference | Y. Agrawal, L. Talbot, and K. Gong, J. Fluid Mech. 85, 497 (1978). | en_US |
dc.identifier.citedreference | D. E. Olson, Ph.D. thesis, University of London, 1971. | en_US |
dc.identifier.citedreference | L.‐S. Yao and S. A. Berger, J. Fluid Mech. 67, 177 (1975). | en_US |
dc.identifier.citedreference | H. B. Squire and K. G. Winter, J. Aeronaut. Sci. 18, 271 (1951). | en_US |
dc.identifier.citedreference | W. R. Hawthorne, Proceedings of the Seminar on Aeronautical Sciences (National Aeronautics Laboratory, Bangalore, India, 1961), pp. 307–333. | en_US |
dc.identifier.citedreference | This device, which can detect flow reversal, is discussed in Ref. 2. Pointwise velocities are determined by measuring the transport time and direction of a thermal pulse initiated at an upstream wire and sensed at a downstream wire. | en_US |
dc.identifier.citedreference | Possibly because inlet vorticity was not as closely confined to the pipe walls as in Agrawal’s experiments, some details of the secondary flow were found to be quite sensitive to the inlet velocity distribution. | en_US |
dc.identifier.citedreference | See Ref. 5, pp. 319–324. | en_US |
dc.identifier.citedreference | Helical pitch is defined by Taylor as the axial length required for a fluid parcel entrained in an eddy to trace a complete circuit. G. I. Taylor, Proc. R. Soc. London Ser. A 124, 243 (1929). | en_US |
dc.owningcollname | Physics, Department of |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.