Research Article
BibTex RIS Cite

NUMERICAL INVESTIGATION OF THE EFFECT OF SECONDARY INLET PLACE ON THE FLOW PROPERTIES IN A CO-AXIAL BOUNDED JET

Year 2020, Volume: 38 Issue: 2, 563 - 579, 01.06.2021

Abstract

If a flow with a low thickness and high velocity enters a lower velocity fluid, the field of this interference is called jet stream. In the present manuscript, because of the importance of the turbulent co-axial jets, a numerical study is done on this kind of jets. In many jet systems, a high-speed fluid from a circular nozzle and a secondary fluid from a ring shaped nozzle co-axial with first nozzle at a lower speed is discharged into the tube. These two flows are mixed inside a tube and form a single stream. In this manuscript, in order to study the behavior of coaxial jets, the results of the computational fluid dynamics (CFD) are presented to determine the place of secondary inlet position on the suction ration. For this aim, different secondary inlets were simulated numerically by Computational Fluid Dynamics (CFD) software i.e. FluentTM. The obtained results showed that the appropriate place to create the secondary inlet is near the first inlet i.e. for the Δr/r= 0.6, one can achieve the highest amount of suction ratio in the jet. In addition the present CFD results were compared to the available experimental data which shows a good agreement.

References

  • [1] Fitzgerald C., Oosthuizen J.C. and O'Dwyer T., (2014) A case of quinsy following high-pressure water jet injury, Irish Medical Journal 107,6, 178.
  • [2] Polácek J. and Janurová E., (2017) Impact of pressure of surrounding medium on plain water jet cutting of rocks, International Journal of Advanced Manufacturing Technology 90, 2185–2191.
  • [3] Kawanaka T., Kato S. and Kunieda M., (2014) Selective surface texturing using electrolyte jet machining, Procedia CIRP 13, 345-349.
  • [4] Karimi Sadaghiyani O., Soufi Boubakran M., and Hassanzadeh A., (2018) Energy and exergy analysis of parabolic trough collectors, International Journal of Heat and Technology 36, 1, 147-158.
  • [5] Chin, S.B., Foo, J.J., Lai, Y.L. and Yong, T.K.K., (2013) Forced Convective Heat Transfer Enhancement with Perforated Pin Fins, Heat Mass Transfer 49, 1447–1458.
  • [6] Naphon, P., and Nakharintr, L., (2012) Heat Transfer of Nanofluids in the Mini-rectangular Fin Heat Sinks, Int. Commun. Heat Mass Transfer 40, 25–31.
  • [7] Jasperson, B.A., Jeon, Y., Turner, K.T., Pfefferkorn, F.E. and Qu, W., (2010) Comparison of Micro-pin-fin and Microchannel Heat Sinks Considering Thermal-hydraulic Performance and Manufacturability, IEEE Trans. Compon. Packag. Technol 33, 148–160.
  • [8] Forstall, W. and Shapiro A.H., (1950). Momentum and Mass Transfer in Coaxial Gas Jets, Journal of Applied Mechanics 18, 2, 399-408.
  • [9] Starck P., (2007) Prediction of Flame Lift off Height of Diffusion/Partially Premixed Jet Flames and Modeling of Mild Combustion Burners, Combustion Science and Technology 179, 10, 2219-2253.
  • [10] Morton B.R., (1962) Coaxial Turbulent Jets, International Journal of Heat and Mass Transfer 5,10, 955-965.
  • [11] Chigier N.A. and Beer J.M., (1964) The Flow Region Near the Nozzle in Double Concentric Jets, Journal of Basic Engineering 86,4, 797-804.
  • [12] Ghodsian M., Mehraein M. and Ranjbar H.R., (2012) Local scour due to free fall jets in non-uniform sediment, Scientia Iranica 19, 6, 1437-1444.
  • [13] Champagne F.H. and Wygnanski I.J., (1971) An Experimental Investigation of Coaxial Turbulent Jets, International Journal of Heat and Mass Transfer 14, 9, 1445-1464.
  • [14] Ribeiro M.M. and Whitelaw J.H., (1976) Turbulent Mixing of Coaxial Jets with Particular Reference to the Near-Exit Region, Journal of Fluids Engineering-Transactions of the ASME 98, 2, 284-291
  • [15] Ko N.W.M. and Kwan A.S.H., (1976) The Initial Region of Subsonic Coaxial Jets, Journal of Fluid Mechanics 73, 2, 305-332.
  • [16] Dahm, W.J.A., Frieler C.E. and Tryggvason G., (1992) Vortex Structure and Dynamics in the Near Field of a Coaxial Jet, Journal of Fluid Mechanics 241, 371-402.
  • [17] Buresti, G., Petagna P. and Talamelli A., (1998) Experimental Investigation on the Turbulent Near-field of Coaxial Jets, Experimental Thermal and Fluid Science 17, 18-26.
  • [18] Warda H.A., Kassab S.Z., Elshorbagy K.A. and Elsaadawy E.A., (2001) Influence of the Magnitude of the Two Initial Velocities on the Flow Field of a Coaxial Turbulent Jet, Flow Measurement and Instrumentation 12,1, 29-35.
  • [19] Schumaker S.A., (2009) An Experimental Investigation of Reacting and Nonreacting Coaxial Jet Mixing in a Laboratory Rocket Engine, Ph. D. thesis, University of Michigan, Ann Arbor, Michigan, USA.
  • [20] Zhuang Y., M, C.F. and Qin M., (1997) Experimental study on local heat transfer with liquid impingement flow in two-dimensional micro-channels, Int. J. Heat Mass Transfer 40, 4055–4059.
  • [21] Liu H., Winoto S.H. and Shah D.A. , (1997) Velocity Measurements within Confined Turbulent Jets, Application to Cardiovalvular Regurgitation. Annals of Biomedical Engineering 25, 939-948.
  • [22] Hassanzadeh, A., Pourmahmoud N. and Dadvand A., (2017) Numerical simulation of motion and deformation of healthy and sick red blood cell through a constricted vessel using hybrid lattice Boltzmann-immersed boundary method, Computer methods in Biomechanics and Biomedical engineering 20,7, 737–749.
  • [23] Pourmahmoud N., Rashidzadeh M. and Hassanzadeh A., (2015) CFD investigation of inlet pressure effects on the energy separation in a vortex tube with convergent nozzles, Engineering Computations 32, 5, 1323-1342.
  • [24] Khodayari Bavil A. and Razavi S.E., (2017) On the thermo flow behavior in a rectangular channel with skewed circular ribs, Mechanics & Industry 18, 2, 225.
There are 24 citations in total.

Details

Primary Language English
Subjects Engineering
Journal Section Research Articles
Authors

Salar Imanmehr This is me 0000-0002-9405-8013

Iraj Mırzaee This is me 0000-0002-3523-5251

Nader Pourmahmoud This is me 0000-0002-9974-6149

Publication Date June 1, 2021
Submission Date January 1, 2020
Published in Issue Year 2020 Volume: 38 Issue: 2

Cite

Vancouver Imanmehr S, Mırzaee I, Pourmahmoud N. NUMERICAL INVESTIGATION OF THE EFFECT OF SECONDARY INLET PLACE ON THE FLOW PROPERTIES IN A CO-AXIAL BOUNDED JET. SIGMA. 2021;38(2):563-79.

IMPORTANT NOTE: JOURNAL SUBMISSION LINK https://eds.yildiz.edu.tr/sigma/