Experimental and Analytical Performance Features of a Pressure-Swirl Injector for Heavy Fuel Oil

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Mikaniki P.; NAJAFI S.M.A.; GHASSEMI H.

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Journal: FLUID MECHANICS AND AERODYNAMICS JOURNAL Year:2018 | Volume:6 | Issue:2 Page(s): 1-13

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Title

Experimental and Analytical Performance Features of a Pressure-Swirl Injector for Heavy Fuel Oil

Author(s)

Mikaniki P. | NAJAFI S.M.A. | GHASSEMI H. | Issue Writer Certificate

Keywords

AtomizationQ2

SprayQ3

Pressure-Swirl InjectorQ1

Breakup LengthQ2

MazutQ2

Abstract

In this study, a compressive duplex injector was designed, fabricated, and its operational characteristics were investigated. Effects of pressure and viscosity on injector's operational characteristics (i. e., flow rate, discharge coefficient, break-up length, cone angel, Spraying spatial distribution, and droplets' mean diameter) were presented as a function of injector's Reynolds and Weber numbers. Water and Mazut were employed as agent fluids due to their high viscosity differences. All experiments were carried out at atmospheric standard conditions. Picturing of Spraying area was performed utilizing fast shooting, based on backlighting. The results showed increasing pressure would lead to raise in flow rate. Furthermore, raising Reynolds number leads to initial cone angel increase, then the Spraying angel maintains constant as fully developed condition is dominated. The constant Spraying angels are observed at Reynolds numbers above 265 and 7. 5×104 for Mazut and water, respectively. Moreover, break-up lengths are decreased at the Weber numbers lower than 50 and 170 for Mazut and water respectively, followed by maintain constant as the flow pattern is developed. The results showed that discharge coefficient depends on Reynolds number and fluid material, in addition to injector's geometry. The discharge coefficient is increased, as the Reynolds numbers raise to 200 and 5×104 for Mazut and water, respectively. The spatial distribution measurements showed significant performance of the injector for creating a hollow cone Spray.

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APA: Copy

Mikaniki, P., NAJAFI, S.M.A., & GHASSEMI, H.. (2018). Experimental and Analytical Performance Features of a Pressure-Swirl Injector for Heavy Fuel Oil. FLUID MECHANICS AND AERODYNAMICS JOURNAL, 6(2 ), 1-13. SID. https://sid.ir/paper/245532/en

Vancouver: Copy

Mikaniki P., NAJAFI S.M.A., GHASSEMI H.. Experimental and Analytical Performance Features of a Pressure-Swirl Injector for Heavy Fuel Oil. FLUID MECHANICS AND AERODYNAMICS JOURNAL[Internet]. 2018;6(2 ):1-13. Available from: https://sid.ir/paper/245532/en

IEEE: Copy

P. Mikaniki, S.M.A. NAJAFI, and H. GHASSEMI, “Experimental and Analytical Performance Features of a Pressure-Swirl Injector for Heavy Fuel Oil,” FLUID MECHANICS AND AERODYNAMICS JOURNAL, vol. 6, no. 2 , pp. 1–13, 2018, [Online]. Available: https://sid.ir/paper/245532/en

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