High Weber Number SMD Correlations for Pressure AtomizersSource: Journal of Engineering for Gas Turbines and Power:;1986:;volume( 108 ):;issue: 001::page 191Author:J. B. Kennedy
DOI: 10.1115/1.3239870Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Published correlations for the Sauter Mean Diameter (SMD) of sprays produced by pressure atomizing injectors have generally taken the form, SMD = Aω̇B ΔPC . The system of units and the fuel properties are reflected by the coefficient A . The exponent of the flow rate term (B) has been found to be approximately 0.20. There has been less agreement relative to the appropriate value of the pressure drop exponent (C ). Simmons [1] reported the value of the pressure drop exponent to be 0.354, and this value has been widely used. This paper presents recently acquired experimental data that reveal that for We greater than 10.0 a different atomization process occurs, i.e., “shear-type” breakup, which results in much finer atomization than predicted by previously reported correlations. To accurately represent the high We data, a significantly different SMD correlation form is required and is reported in this paper. The effects of large variations in the nozzle size, fuel density, viscosity, surface tension, and fuel temperature have been included in the derivation of the correlations.
keyword(s): Pressure , Surface mount devices , Fuels , Pressure drop , Density , Viscosity , Shear (Mechanics) , Ejectors , Nozzles , Sprays , Surface tension , Flow (Dynamics) AND Temperature ,
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contributor author | J. B. Kennedy | |
date accessioned | 2017-05-08T23:22:33Z | |
date available | 2017-05-08T23:22:33Z | |
date copyright | January, 1986 | |
date issued | 1986 | |
identifier issn | 1528-8919 | |
identifier other | JETPEZ-26630#191_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/101180 | |
description abstract | Published correlations for the Sauter Mean Diameter (SMD) of sprays produced by pressure atomizing injectors have generally taken the form, SMD = Aω̇B ΔPC . The system of units and the fuel properties are reflected by the coefficient A . The exponent of the flow rate term (B) has been found to be approximately 0.20. There has been less agreement relative to the appropriate value of the pressure drop exponent (C ). Simmons [1] reported the value of the pressure drop exponent to be 0.354, and this value has been widely used. This paper presents recently acquired experimental data that reveal that for We greater than 10.0 a different atomization process occurs, i.e., “shear-type” breakup, which results in much finer atomization than predicted by previously reported correlations. To accurately represent the high We data, a significantly different SMD correlation form is required and is reported in this paper. The effects of large variations in the nozzle size, fuel density, viscosity, surface tension, and fuel temperature have been included in the derivation of the correlations. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | High Weber Number SMD Correlations for Pressure Atomizers | |
type | Journal Paper | |
journal volume | 108 | |
journal issue | 1 | |
journal title | Journal of Engineering for Gas Turbines and Power | |
identifier doi | 10.1115/1.3239870 | |
journal fristpage | 191 | |
journal lastpage | 195 | |
identifier eissn | 0742-4795 | |
keywords | Pressure | |
keywords | Surface mount devices | |
keywords | Fuels | |
keywords | Pressure drop | |
keywords | Density | |
keywords | Viscosity | |
keywords | Shear (Mechanics) | |
keywords | Ejectors | |
keywords | Nozzles | |
keywords | Sprays | |
keywords | Surface tension | |
keywords | Flow (Dynamics) AND Temperature | |
tree | Journal of Engineering for Gas Turbines and Power:;1986:;volume( 108 ):;issue: 001 | |
contenttype | Fulltext |