Spray droplet velocity characterization for convergent nozzles with three different diameters
| Autor: | Lucio Araneo, Francisco Javier Salvador, Raul Payri, Bernardo Tormos |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Spray characteristics
Work (thermodynamics) Injection Materials science General Chemical Engineering Gaussian Phase Doppler Anemometry spray diesel Nozzle Analytical chemistry Energy Engineering and Power Technology Momentum flux Physics::Fluid Dynamics Momentum symbols.namesake Position (vector) Organic Chemistry Mechanics Core (optical fiber) Fuel Technology Diesel spray Fuel droplets velocity MAQUINAS Y MOTORES TERMICOS symbols Body orifice |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| Popis: | [EN] The core of the present work consists of the phase-Doppler anemometry non-intrusive measurements performed at various points of diesel direct injection sprays in order to obtain the local speed of fuel droplets. The main objective was to perform extensive sets of measurements on convergent nozzles with various orifices diameters, observe and justify the differences and compare the experimental data with a theoretical approach derived by the authors in a previous work which takes into account the spray momentum flux. Experimental axial velocity profiles in different sections of the spray showed a radial distribution that was fitted with a high level of agreement to a Gaussian profile and so proving that this type of profile is a reasonable approach for the type of sprays within the scope of the present work. The experimental results showed that the velocity in the spray's axis inversely depends on axial position and that for a given axial position; higher axial velocity has been measured for the nozzles with higher spray momentum. (c) 2008 Elsevier Ltd. All rights reserved. This research has been funded by "Vicerrectorado de Innovacion, Desarrollo e Innovacion de la Universidad Politecnica de Valencia" in the frame of the Project "Estudio del flujo en el interior de toberas de inyeccion Diesel", Reference No. 3150 |
| Databáze: | OpenAIRE |
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