Please use this identifier to cite or link to this item:
Title: Flow behaviour of turbulent nozzle jets issuing from bevelled collars
Authors: Zeng, Y. 
New, T.H.
Chng, T.L. 
Keywords: Bevelled collar
Hot-wire anemometry
Jet flow control
Issue Date: Nov-2011
Citation: Zeng, Y., New, T.H., Chng, T.L. (2011-11). Flow behaviour of turbulent nozzle jets issuing from bevelled collars. Experimental Thermal and Fluid Science 35 (8) : 1555-1564. ScholarBank@NUS Repository.
Abstract: An experiment was conducted to investigate turbulent, low-speed air jets issuing from bevelled and non-bevelled circular collared-nozzle configurations. The collar-to-nozzle expansion ratio used was three and Reynolds number was approximately 20,000. Detailed mean flow velocity fields and velocity spectra of the resultant jet flows at different collar lengths and bevel angles were evaluated using hot-wire anemometry along both axial and radial directions of the jets. Centreline velocity decay was shown to be augmented when either collar length or bevel angle was increased, with the collar length playing a more dominant role. Results also showed that bevelled collared-jets vectored towards the longer collar-length region, the extent to which was enhanced when the collar length or bevel angle was increased. The study demonstrated that a bevelled collar exit could be used as an additional control device on top of the collar length to achieve finer jet flow control in terms of jet momentum vectoring and asymmetric jet spread. © 2011 Elsevier Inc.
Source Title: Experimental Thermal and Fluid Science
ISSN: 08941777
DOI: 10.1016/j.expthermflusci.2011.07.007
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Oct 20, 2021


checked on Oct 20, 2021

Page view(s)

checked on Oct 14, 2021

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.