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Abstract

Optimization of cooling systems is of major importance due to the economy of cooling water and energy in thermal installations in the industry. The hydrodynamic study of the film is a prerequisite for the study of the intensity of the heat transfer during the cooling of a horizontal plate by a liquid film. This experimental work made it possible to quantify the hydrodynamic parameters by a new approach, a relation linking the thickness of the film to the velocity was found as a function of the geometrical and hydrodynamic characteristics of the sprayer.
A new statistical approach has been developed for the measurement of the velocity, the liquid fluid arriving at the edge of the plate and having velocity V is spilled out like a projectile. The recovering of the liquid in tubes allowed us to quantify flow rates for different heights positions relative to the plate, statistical processing permitted us to assess the probable velocity with a margin of error.

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Bibliography

[1] B. Abbasi. Pressure-based predection of spray cooling heat transfer. Ph.D. Thesis, University of Maryland, College Park, USA, 2010.
[2] E.G. Bratuta and L. Zanotchkine. Intensification of heat transfer by dispersed fluids. Machinostraenia Energy, 38(84):71--75, 1984. (in Russian).
[3] M. Tebbal. Correlation of the thermal transfer coefficient and the dispersion of the fluid on a surface at high temperature. In: 5th International Meeting on Heat Transfer, Monastir, Tunisia, 1991.
[4] W. Ambrosini, N. Forgione, F. Oriolo, P. Vigni, and S. Baessler. Experimental investigation on wave velocity in a falling film. In: 2nd International Symposium on Two-phase Flow Modelling and Experimentation, Pisa, Italy, May 23-26, 1999.
[5] W. Ambrosini, N. Forgione, and F. Oriolo. Statistical characteristics of a water film falling down a flat plate at different inclinations and temperatures. International Journal of Multiphase Flow, 28(9):1521-1540, 2002. doi: 10.1016/S0301-9322(02)00039-3.
[6] P. Adomeit and U. Renz. Hydrodynamics of three-dimensional waves in laminar falling films. International Journal of Multiphase Flow, 26(7):1183-1208, 2000. doi: 10.1016/S0301-9322(99)00079-8.
[7] S.V. Alekseenko, V.A. Antipin, A.V. Bobylev, and D.M. Markovich. Application of PIV to velocity measurements in a liquid film flowing down an inclined cylinder. Experiments in Fluids, 43:197-207, 2007. doi: 10.1007/s00348-007-0322-2.
[8] W. Aouad, J.R. Landel, S.B. Dalziel, J.F. Davidson, and D.I. Wilson. Particle image velocimetry and modelling of horizontal coherent liquid jets impinging on and draining down a vertical wall. Experimental Thermal and Fluid Science, 74:429-443, 2016. doi: 10.1016/j.expthermflusci.2015.12.010.
[9] A.C. Ashwood, S.J. Vanden Hogen, M.A. Rodarte, C.R. Kopplin, D.J. Rodríguez, E.T. Hurlburt, and T.A. Shedd. A multiphase, micro-scale PIV measurement technique for liquid film velocity measurements in annular two-phase flow. International Journal of Multiphase Flow, 68:27-39, 2015. doi: 10.1016/j.ijmultiphaseflow.2014.09.003.
[10] T. Takamasa and T. Hazuku. Measuring interfacial waves on film flowing down a vertical plate wall in the entry region using laser focus displacement meters. International Journal of Heat and Mass Transfer, 43(15):2807-2819, 2000. doi: 10.1016/S0017-9310(99)00335-X.
[11] K. Moran, J. Inumaru, and M. Kawaji. Instantaneous hydrodynamics of a laminar wavy liquid film. International Journal of Multiphase Flow, 28(5):731-755, 2002. doi: 10.1016/S0301-9322(02)00006-X.
[12] M. Tebbal and H. Mzad. An hydrodynamic study of a water jet dispersion beneath liquid sprayers. Forschung im Ingenieurwesen, 68(3):126-132, 2004. doi: 10.1007/s10010-003-0118-3. (in German).
[13] H. Mzad and M. Tebbal. Thermal diagnostics of highly heated surfaces using water-spray cooling. Heat and Mass Transfer, 45(3):287-295, 2009. doi: 10.1007/s00231-008-0431-3.
[14] E.S. Benilov, S.J. Chapman, J.B. McLeod, J.R. Ockendon, and V.S. Zubkov. On liquid films on an inclined plate. Journal of Fluid Mechanics, 663(25):53-69, 2010. doi: 10.1017/S002211201000337X.
[15] X.G. Huang, Y.H. Yang, P. Hu, and K. Bao. Experimental study of water-air countercurrent flow characteristics in large scale rectangular channel. Annals of Nuclear Energy, 69:125-133, 2014. doi: 10.1016/j.anucene.2014.02.005.
[16] Y.Q. Yu and X. Cheng. Experimental study of water film flow on large vertical and inclined flat plate. Progress in Nuclear Energy, 77:176-186, 2014.doi: 10.1016/j.pnucene.2014.07.001.
[17] H. Mzad and M. Elguerri. Simulation of twin overlapping sprays underneath hydraulic atomizers: influence of spray hydrodynamic parameters. Atomization and Sprays, 22(5):447-460, 2012. doi: 10.1615/AtomizSpr.2012006076.
[18] K. Choual, R. Benzeguir, and M. Tebbal. Experimental study of the dispersion beneath liquid sprayers in the intersection area of jets on a horizontal plate. Mechanika, 23(6):835-844, 2017. doi: 10.5755/j01.mech.23.6.17243.
[19] W-F. Du, Y-H. Lu, R-C. Zhao, L. Chang, and H-J. Chang. Film thickness of free falling water flow on a large-scale ellipsoidal surface. Progress in Nuclear Energy, 105:1-7, 2018. doi: 10.1016/j.pnucene.2017.12.007.
[20] C.B. Tibiriçá, F.J. do Nascimento, and G. Ribatski. Film thickness measurement techniques applied to micro-scale two-phase flow systems. Experimental Thermal and Fluid Science, 34(4):463-473, 2010. doi: 10.1016/j.expthermflusci.2009.03.009.
[21] H. Ouldrebai, E.K. Si-Ahmed, M. Hammoudi, J. Legrand, Y. Salhi, and J. Pruvost. A laser multi-reflection technique applied for liquid film flow measurements. Experimental Techniques, 43:213-223, 2019. doi: 10.1007/s40799-018-0279-5.
[22] J. Cai and X. Zhuo. Researches on hydrodynamics of liquid film flow on inclined plate using diffuse-interface method. Heat and Mass Transfer, 56:1889-1899, 2020. doi: 10.1007/s00231-020-02829-6.
[23] E.G Bratuta and M. Tebbal. Influence of the jet on the fluid dispersion. IzvestiaVouzob, Métallurgie, 12:108-111, 1983.
[24] B. Patrick, B. Barber, and D. Brown. Practical aspects of the design, operation and performance of caster spray systems. Revue de Métallurgie, 98(4):383-390, 2001. doi: 10.1051/metal:2001192.
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Authors and Affiliations

Abdelbaki Elmahi
1
ORCID: ORCID
Touhami Baki
1
ORCID: ORCID
Mohamed Tebbal
1

  1. Faculty of Mechanics, Gaseous Fuels and Environment Laboratory, University of Sciences and Technology of Oran Mohamed Boudiaf (USTO-MB), El Mnaouer, Oran, Algeria.

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