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Article: Centerline velocity decay of a circular jet in a counterflowing stream
Title | Centerline velocity decay of a circular jet in a counterflowing stream |
---|---|
Authors | |
Keywords | Physics |
Issue Date | 1998 |
Publisher | American Institute of Physics. The Journal's web site is located at http://ojps.aip.org/phf |
Citation | Physics of Fluids, 1998, v. 10 n. 3, p. 637-644 How to Cite? |
Abstract | We use an advection hypothesis to analyze the decay of centerline velocity of a circular jet issuing into a counterflowing stream. Working in the Lagrangian frame, we follow the locations and velocity gradients of jet fluid particles along the jet central axis while the particles are being advected backwards by the counterflow. The spatial velocity gradient along the jet centerline is thus obtained and subsequently integrated to describe the spatial decay of axial velocities. Laser-doppler velocity measurements are performed in the laboratory and the data are well predicted by our analytical expression of centerline velocity decay. Looking from another view, our treatment supports that the effect of an external axial flow stream on the jet flow field can be represented by a certain degree of stretching or contracting of the jet in the axial direction. © 1998 American Institute of Physics. |
Persistent Identifier | http://hdl.handle.net/10722/42644 |
ISSN | 2023 Impact Factor: 4.1 2023 SCImago Journal Rankings: 1.050 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chan, CHC | en_HK |
dc.contributor.author | Lam, KM | en_HK |
dc.date.accessioned | 2007-03-23T04:28:42Z | - |
dc.date.available | 2007-03-23T04:28:42Z | - |
dc.date.issued | 1998 | en_HK |
dc.identifier.citation | Physics of Fluids, 1998, v. 10 n. 3, p. 637-644 | - |
dc.identifier.issn | 1070-6631 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/42644 | - |
dc.description.abstract | We use an advection hypothesis to analyze the decay of centerline velocity of a circular jet issuing into a counterflowing stream. Working in the Lagrangian frame, we follow the locations and velocity gradients of jet fluid particles along the jet central axis while the particles are being advected backwards by the counterflow. The spatial velocity gradient along the jet centerline is thus obtained and subsequently integrated to describe the spatial decay of axial velocities. Laser-doppler velocity measurements are performed in the laboratory and the data are well predicted by our analytical expression of centerline velocity decay. Looking from another view, our treatment supports that the effect of an external axial flow stream on the jet flow field can be represented by a certain degree of stretching or contracting of the jet in the axial direction. © 1998 American Institute of Physics. | en_HK |
dc.format.extent | 192408 bytes | - |
dc.format.extent | 25600 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.format.mimetype | application/msword | - |
dc.language | eng | en_HK |
dc.publisher | American Institute of Physics. The Journal's web site is located at http://ojps.aip.org/phf | en_HK |
dc.relation.ispartof | Physics of Fluids | en_HK |
dc.rights | Copyright 1998 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Physics of Fluids, 1998, v. 10 n. 3, p. 637-644 and may be found at https://doi.org/10.1063/1.869589 | - |
dc.subject | Physics | en_HK |
dc.title | Centerline velocity decay of a circular jet in a counterflowing stream | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1070-6631&volume=10&issue=3&spage=637&epage=644&date=1998&atitle=Centerline+velocity+decay+of+a+circular+jet+in+a+counterflowing+stream | en_HK |
dc.identifier.email | Lam, KM:kmlam@hku.hk | en_HK |
dc.identifier.authority | Lam, KM=rp00134 | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1063/1.869589 | en_HK |
dc.identifier.scopus | eid_2-s2.0-0001545677 | en_HK |
dc.identifier.hkuros | 39348 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0001545677&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 10 | en_HK |
dc.identifier.issue | 3 | en_HK |
dc.identifier.spage | 637 | en_HK |
dc.identifier.epage | 644 | en_HK |
dc.identifier.isi | WOS:000072311400011 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Chan, CHC=55031165800 | en_HK |
dc.identifier.scopusauthorid | Lam, KM=7403656958 | en_HK |
dc.identifier.issnl | 1070-6631 | - |