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Investigating Effects of Pressure on Discharge Velocities of Different Sizes Fluid Jet
Abstract
This paper aims to investigate the effect of pressure on the discharge velocities of different sizes water jet. To fulfil the above aim, the study selected two different diameters such as 6 mm and 4.5 mm water jet which discharges water from variable water head, H. The measured and calculated discharge velocities for each water jet were determined based on travel time theory and flow equation respectively. In addition, an expression explaining the relationship between water pressure head, H and velocity V, were developed. The study results showed that pressure head has a significant effect on the discharge velocity and increases linearly with the increasing trend of pressure head. The relationship between H and V is linear with the R2 value of trend line is 0.99. The calculated and measured velocity varies from 73% to 98% accuracy because air resistance were not accounted during experiment. The developed linear equation will provide easy estimation of velocities for different sizes fluid jet corresponding to required pressure head.
Keywords: Pressure head, Discharge velocities, Fluid jet, Travel time, Flow equation.
References
Laurila, E., Koivisto, S., Kankkunen, A., Saari, K., Maakala, V., Järvinen, M., & Vuorinen, V.
(2020). Computational and experimental investigation of a swirl nozzle for viscous fluids.
International Journal of Multiphase Flow, DOI: https://doi.org/10.1016/j.ijmultiphaseflow.
103278, vol.128, pp.103278.
Sou, A., Hosokawa, S., & Tomiyama, A. (2007). Effects of cavitation in a nozzle on liquid jet
atomization. International journal of heat and mass transfer, DOI: https://doi.org/10.1016/j.
ijheatmasstransfer.2006.12.033, vol.50(17–18), pp.3575–3582.
Sharma, P., & Fang, T. (2014). Breakup of liquid jets from non-circular orifices. Experiments in
fluids, DOI: https://doi.org/10.1007/s00348-014-1666-z, vol. 55(2), pp.1–17.
Gnanavelbabu, A., Rajkumar, K., & Saravanan, P. (2018). Investigation on the cutting quality
characteristics of abrasive water jet machining of AA6061-B4C-hBN hybrid metal matrix
composites. Materials and Manufacturing Processes, DOI: https://doi.org/10.1080/10426914.
1453146, vol.33(12), pp. 1313–1323.
Munson, B, Young, D, Okiishi, T, Huebsch, W 2009, ‘Fundamentals of Fluid Mechanics’, Wiley,
vol. 6th Edition, pp. 42–43.
Negeed, E.-S. R., Hidaka, S., Kohno, M., & Takata, Y. (2011). Experimental and analytical
investigation of liquid sheet breakup characteristics. International Journal of Heat and Fluid Flow,
DOI: https://doi.org/10.1016/j.ijheatfluidflow.2010.08.005,vol.32(1), pp.95–106.
Urbán, A., Malý, M., Józsa, V., &Jedelský, J. (2019). Effect of liquid preheating on high-velocity
airblast atomization: From water to crude rapeseed oil. Experimental Thermal and Fluid Science,
DOI: https://doi.org/10.1016/j.expthermflusci.2018.11.006, vol.102, pp. 137–151.
Wang, F., & Fang, T. (2015). Liquid jet breakup for non-circular orifices under low pressures.
International Journal of Multiphase Flow, DOI: https://doi.org/10.1016/j.ijmultiphaseflow.
02.015, vol.72, pp.248-262.
Li, D., Kang, Y., Wang, X., Ding, X., & Fang, Z. (2016). Effects of nozzle inner surface
roughness on the cavitation erosion characteristics of high speed submerged jets. Experimental
Thermal and Fluid Science, DOI: https://doi.org/10.1016/j.expthermflusci.2016.01.009, vol.74,
pp.444–452.
Xiao, S., Ge, Z., Lu, Y., Zhou, Z., Li, Q., & Wang, L. (2018). Investigation on coal fragmentation
by high-velocity water jet in drilling: size distributions and fractal characteristics. Applied
Sciences, DOI: https://doi.org/10.3390/app8101988, vol. 8(10), pp.1–20.
Hibbeler, R 2010, ‘Engineering Mechanics Statics Twelfth Edition In SI Units’, Pearson, vol. 12th
Edition, pp. 494.
Serway, R, Jewett, J 2010, ‘Physics for Scientists and Engineers’, Brooks/Cole, vol. 1 8th Edition,
pp. 73.
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