Experimental Investigations on Stabilization Mechanism of Lifted Kerosene Spray Flames
| Autor: | Umesh Potdar, Young-Kwang Yoon, Ajinkya Jamgade, Sudarshan Kumar, P. Mahyavanshi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Spray characteristics
020209 energy General Chemical Engineering Nozzle Analytical chemistry Heights Flows General Physics and Astronomy Energy Engineering and Power Technology Combustion 02 engineering and technology 01 natural sciences 010305 fluids & plasmas Sauter Mean Diameter 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Lifted Spray Flames Pressure-Swirl Atomizers Composite material Kerosene Chemistry Drop (liquid) Sauter mean diameter Air General Chemistry Drop Fuel injection Flame Liftoff Height Fuel Technology Particle image velocimetry Flame Stabilization Jet Diffusion Flames |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 |
| Popis: | In the present work, detailed experimental investigations have been carried out to understand the role of various spray parameters, such as fuel injection pressure, droplet size distribution, and velocity field on the stabilization of lifted spray flames with kerosene fuel. Six full cone pressure swirl nozzles N1-N6 (fuel flow rate, m(f) = 1.7-7.08 kg/h at P-inj = 9 bar) are considered for experiments with fuel injection pressure varying from 4-9 bar. The Sauter mean diameter (SMD) has been observed to decrease (58-34 mu m) with an increase in fuel injection pressure (4-9 bar). The flame liftoff height of the spray flame increases with an increase in the fuel injection pressure, even though the spray SMD decreases. To understand the role of the various important spray parameters on stabilization of lifted spray flames, particle image velocimetry measurements have been carried out near the flame stabilization zone of the spray. It has been observed that a zone of high velocity is formed near the nozzle exit. The size of this zone varies with injection pressure and this has been attributed to increased fluctuations in a lifted spray flame along with the increased momentum of the droplets emanating from the spray at higher injection pressures. |
| Databáze: | OpenAIRE |
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