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Examination of the Effect of Nozzle Geometry on Jet Flow Structure


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DOI: https://doi.org/10.15866/ireme.v17i9.23970

Abstract


In this work, examination of nozzle geometry on jet flow structure is considered. The jet is produced from round, square, rectangular (Aspect Ratio (AR)=2) and equilateral triangular nozzles at Reynolds number (Re) of 5210 based on equivalent diameter (De) of 25.4 mm. Hot wire measurement is performed on the field (0 ≤ X/De ≤ 50) of the jet for all the nozzles. Both stream-wise and span-wise velocities are measured. The results show decrease in potential core and further decrease in centerline velocity at the end of potential core for round, rectangle, square and equivalent triangular nozzle, respectively, for the considered Re. Spread rate increased for rectangle, square and equilateral triangular geometry, respectively when compared with round geometry. However, axis-switching is observed in equilateral triangular jet at X = 3De. Velocity profile seems not to be affected by the geometry. Generally, equilateral triangular nozzle exhibits the best mixing rate followed by square, rectangular (AR = 2) and round nozzle as observed in potential core and spread rate.
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Keywords


Nozzle Geometry; Potential Core; Centerline Velocity; Jet Half-Width; Axis-Switching

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References


Kumar, P. V.S.S., Pai, N.P. and Devaki, B. 2021. Analysis of MHD flow and heat transfer of laminar flow between porous disks. Frontiers in Heat and Mass Transfer 16 (3), 1-7.
https://doi.org/10.5098/hmt.16.3

Karkera, H., Katagi, N.N., and Kudenatti, R.B. 2022. Analysis of laminar-boundary layer flow over a moving wedge using a uniform HAAR wavelet method. Frontiers in Heat and Mass Transfer 18 (41), 1-10.
https://doi.org/10.5098/hmt.18.41

Boonloi, A. and Jedsadaratanachai, W. 2022. Heat transfer and flow profiles in round tube heat exchanger equipped with various V-rings. Frontiers in Heat and Mass Transfer 18 (2), 1-13.
https://doi.org/10.5098/hmt.18.2

Petinrin, M.O., Sikirullahi, B.A., Olugasa, T. T. and Oyewola, O. M. 2022. Crossflow and heat transfer characteristics across a cam-shaped tube bank: a numerical study. Frontiers in Heat and Mass Transfer 19 (28), 1-8.
https://doi.org/10.5098/hmt.19.28

Oyewola, O.M., Petinrin, M.O. and Sanusi, H.O. 2023. Flow and heat characteristics in channels with Piriform dimples and protrusions. Frontiers in Heat and Mass Transfer 20 (16), 1-8.
https://doi.org/10.5098/hmt.20.16

Erelli, R., Saha, A.K. and Panigrahi, P.K.2005. Influence of turn geometry on turbulent fluid flow and heat transfer in a stationary two-pass square duct. International Journal of Heat and Mass Transfer 89, 667-684.
https://doi.org/10.1016/j.ijheatmasstransfer.2015.05.081

Jamei, M. K., Alashti, M.H., Abbasi, M. and EbrahimNejad, A. 2021. Impact of round edge on the duct fluid flow: analytical investigation. SN Applied Sciences 3 (431): 1-11.
https://doi.org/10.1007/s42452-021-04434-6

Oyewola, O.M., Ismail, O.S., Olasinde, M.O. and Ajide, O.O.2022a. Numerical Simulation of Mixed Convective Flow over Triangularly Arranged Cylinders. Frontiers in Heat and Mass Transfer 18 (30), 1-8.
https://doi.org/10.5098/hmt.18.30

Oyewola, O.M., Akinwonmi, A.S., Ajide, O.O. and Salau, T.A.O. 2022b. Effect of Swirl on Temperature Decay Function in Straight Blade Liquid Fuel Swirl Burner. International Journal of Heat and Technology 40 (2), 527-534.
https://doi.org/10.18280/ijht.400220

Al-Obaidi A.R. and Alhamid J. 2023. The Effect of different twisted taper inserts configurations on fluid flow characteristics, pressure drop, thermos-hydraulic performance and heat transfer enhancement in the 3D circular tube. International Journal of Ambient Energy 44 (1), 57-72.
https://doi.org/10.1080/01430750.2022.2091023

Nayak, R. K. & Tripathy, R. 2023. Predicting ATP-Binding Cassette Transporters Using Rough Set and Random Forest Model. In U. Vignesh, R. Parvathi, & R. Goncalves (Eds.), Structural and Functional Aspects of Biocomputing Systems for Data Processing (pp. 161-181). IGI Global.
https://doi.org/10.4018/978-1-6684-6523-3.ch008

Du, X., Li, B., Liu, H., Wu, Y., Cheng, T. and Awbi, H.B.2018. Effect of nozzle air supply temperature and volume flowrate on the jet flow from a typical ventilation nozzle in aircraft cabins. Indoor and Built Environment 27(4), 499-511.
https://doi.org/10.1177/1420326X16676881

Weigel, P., Schuller, M., Gratias, A., Liposwski, Meer, T. T. and Bardet, M. 2020. Design of a synthetic jet actuator for flow separation control. CEAS Aeronautical Journal 11: 813-821.
https://doi.org/10.1007/s13272-020-00479-2

Tang, J., Zhong, Z., Lu X. and Wang, L. 2023. Influence of jet parameters on the aero engine cleaning flow field. International Journal of Fluid Power 24 (3): 491-512.
https://doi.org/10.13052/ijfp1439-9776.2434

Gutmark, E.J. and Grinstein, F.F. 1999. Flow Control with Non-circular jets. Annual Review of Fluid Mechanics 31:239-272.
https://doi.org/10.1146/annurev.fluid.31.1.239

Oyewola, O., Okediji, A., Ajide, O., Adaramola, M., Examination of the Effects of Circular Ring on the Developing Region of Axisymmetric Round Jet Flow, (2022) International Review of Mechanical Engineering (IREME), 16 (11), pp. 573-581.
https://doi.org/10.15866/ireme.v16i11.22582

Hu, H., Saga, T., Kobayashi, T. and Tanigushi, N. 2000. Passive Control on Jet Mixing Flows by using Vortex Generators. Proceedings of the sixth triennial international symposium of fluid control, measurement and visualization, Sherbrooke, Canada, August 13-17

Mauti, B., Faber, W. and Romano, G.P. 2000. The effect of a cylinder on the velocity field at the outlet of a circular jet measured by PIV and PTV. Proceedings of the 10th conference on the applications of laser anemometry to fluid mechanics, Lisbon. pp. 1-12.

Fellouah, H and Pollard, A. 2009. The velocity spectra and turbulence length scale distributions in the near to intermediate regions of a round free turbulent jet. Physics of fluids 21:1-9.
https://doi.org/10.1063/1.3258837

Fiedler, H.E. 1998 Control of free turbulent shear flows, Flow Control: Fundamentals and Practices, edited by M.G. El-Hak, A. Pollard, and J.P. Bonnet Springer-Verlag, Germany, pp.335-429
https://doi.org/10.1007/3-540-69672-5_6

Abdel-Rahman, A. 2005. A review of effect of initial and boundary conditions on turbulent jets. WSEAS transactions on fluid mechanics 5(4), 1-19. ISSN: 1790-5087.

Dewan, A., Pathak, M. and Dass, A.K. 2005. A survey of selected literature on important flow properties and computational fluid dynamics treatments of incompressible turbulent plane and round jets in quiescent ambient. Indian Journal of Engineering and Material sciences 13, 180-194.

Ball, C.G., Fellouah, H. and Pollard, A. 2012. The flow field in turbulent round free jets. Progress in Aerospace Science 50:1-26.
https://doi.org/10.1016/j.paerosci.2011.10.002

New, T. 2010. Effects of notch geometry and sharpness on turbulent jets issuing from intermediate - origin notched nozzles. European Journal of Mechanics, B/ fluids, 29:309-320.
https://doi.org/10.1016/j.euromechflu.2010.02.005

Zeng, T., New, T. and Ching, T. 2011. Flow behaviour of turbulent nozzle jets issuing from bevelled collars. Experimental thermal and fluid science 8.35:1555-1564.
https://doi.org/10.1016/j.expthermflusci.2011.07.007

Hu, C.C., Lin. W.T. and Su, C.M. 2011. Flow characteristics of pyramidal shaped small sonic nozzles. Journal of Flow measurement and instrumentation 22:64-70.
https://doi.org/10.1016/j.flowmeasinst.2010.12.005

Bartoszewicz, J., Klosowiak, R. and Boguslawski, L. 2012. The analysis of the flow structure in a set of variable geometry of the reverse chamber. International Journal of Heat and mass transfer. 55:3237- 3245.
https://doi.org/10.1016/j.ijheatmasstransfer.2012.02.050

Songkaor, K., Wae-hayee, M., Leevijit, T. And Nuntadusit, C. 2012. Effect of Nozzle Geometry on flow Characteristics of jet from expansion pipe nozzle. The 10th International PSU Engineering Conference, May 14-15. 4-8.

Alnahhal, M. and Panidis. Th. 2009. Effect of sidewalls on rectangular jets. Journal of Experimental thermal and fluid science 33:838-851.
https://doi.org/10.1016/j.expthermflusci.2009.03.001

Xu, M., Pollard, A., Mi, J., Secretain, F. and Sadeghi, H. 2013. Effect of Reynolds number on some properties of a turbulent jet from a long square pipe. Physics of Fluids 25, 035102.
https://doi.org/10.1063/1.4797456

Oyewola, O.M., Okediji, A. P., Ajide, O.O and Adaramola M.S. 2021. Examination of Reynolds number effects on the development of round jet flow. EUREKA: Physics and Engineering, 6, 39-47.
https://doi.org/10.21303/2461-4262.2021.001872

Samara, M., Vashishtha, A., Watanabe, Y., Suzuki, K., Flow-Field and Performance Study of Coaxial Supersonic Nozzles Operating in Hypersonic Environment, (2020) International Review of Aerospace Engineering (IREASE), 13 (1), pp. 25-39.
https://doi.org/10.15866/irease.v13i1.18282

Maruthupandiyan, K., Rajanala, J., Kumar S. M., A., Rathakrishnan, E., Near Field Decay of Mach 2 Elliptical Jet in the Presence of Tangentially Injected Secondary Swirling Flow, (2022) International Review of Aerospace Engineering (IREASE), 15 (4), pp. 197-204.
https://doi.org/10.15866/irease.v15i4.22566

Kozakiewicz, A., Frant, M., Majcher, M., Impact of the Intake Vortex on the Stability of the Turbine Jet Engine Intake System, (2021) International Review of Aerospace Engineering (IREASE), 14 (4), pp. 173-180.
https://doi.org/10.15866/irease.v14i4.20223

Almuradi, S., Nonlinear Longitudinal Aerodynamic Analysis at Low Speed Delta Jet Fighter, (2021) International Review of Aerospace Engineering (IREASE), 14 (1), pp. 8-19.
https://doi.org/10.15866/irease.v14i1.17303


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