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rectangular-nozzle
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Numerical investigation of nozzle geometry effect on turbulent 3-D water offset jet flows
, Article Journal of Applied Fluid Mechanics ; Volume 9, Issue 4 , 2016 , Pages 2083-2095 ; 17353572 (ISSN) ; Afshin, H ; Farahanieh, B ; Sharif University of Technology
Isfahan University of Technology
2016
Abstract
Using the Yang-Shih low Reynolds k-ε turbulence model, the mean flow field of a turbulent offset jet issuing from a long circular pipe was numerically investigated. The experimental results were used to verify the numerical results such as decay rate of streamwise velocity, locus of maximum streamwise velocity, jet half width in the wall normal and lateral directions, and jet velocity profiles. The present study focused attention on the influence of nozzle geometry on the evolution of a 3D incompressible turbulent offset jet. Circular, square-shaped, and rectangular nozzles were considered here. A comparison between the mean flow characteristics of offset jets issuing from circular and...
Numerical investigation of turbulent free jet flows issuing from rectangular nozzles: The influence of small aspect ratio
, Article Archive of Applied Mechanics ; Volume 80, Issue 7 , 2010 , Pages 727-745 ; 09391533 (ISSN) ; Maddahian, R ; Faghani, P ; Farhanieh, B ; Sharif University of Technology
2010
Abstract
In this research, the fluid and thermal characteristics of a rectangular turbulent jet flow is studied numerically. The results of three-dimensional jet issued from a rectangular nozzle are presented. A numerical method employing control volume approach with collocated grid arrangement was employed. Velocity and pressure fields are coupled with SIMPLEC algorithm. The turbulent stresses are approximated using k-ε model with two different inlet conditions. The velocity and temperature fields are presented and the rates of their decay at the jet centerline are noted. The velocity vectors of the main flow and the secondary flow are illustrated. Also, effect of aspect ratio on mixing in...
Numerical investigation of effect of aspect ratio of rectangular nozzles
, Article 2008 2nd International Conference on Thermal Issues in Emerging Technologies, ThETA 2008, Cairo, 17 December 2008 through 20 December 2008 ; July , 2008 , Pages 391-398 ; 9781424435777 (ISBN) ; Farhanieh, B ; Maddahian, R ; Faghani, P ; Sharif University of Technology
2008
Abstract
In this research the fluid and thermal characteristics of a rectangular turbulent jet flow is studied numerically. The results of three dimensional jet issued from a rectangular nozzle are presented. A numerical method employing control volume approach with collocated grid arrangement was employed. Velocity and pressure fields are coupled with SIMPLEC algorithm. The turbulent stresses are approximated using k-e model with two different inlet conditions. The velocity and temperature fields are presented and the rates of their decay at jet centerline are noted. The velocity vectors of a main flow and secondary flow are illustrated. Also effect of aspect ratio on mixing in rectangular cross...