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Numerical Investigation of Spray Formation in Coaxial Nozzles

Konstantinov, Mikhail and Wagner, Claus (2008) Numerical Investigation of Spray Formation in Coaxial Nozzles. In: ILASS 2008, Conference Proceedings (ILASS0). 22nd European Conference on Liquid Atomization and Spray Systems, 2008-09-08 - 2008-09-10, Como Lake, Italy. ISBN 978-88-903712-0-2.

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Abstract

In this paper the results of numerical investigation of atomization process of liquid fuel (Diesel) in Laval and coaxial nozzles are presented. The calculations have been performed using CFD codes of STAR-CD. The dependences between the different cases of pressure drop and spray formation have been analysed. For that purpose a model to simulate unsteady two-phase atomization process has been employed. Results of transient flow through various 3D nozzle shapes and the resulting spray development have to be discussed. The three type of nozzle (Laval, converging and coaxial) are considered. It was found that for the nozzles under consideration the finer atomization occurs for low initial mass flow rates. The atomization process in such nozzles occurs by fragmentation between high velocity gas jet and fuel volume. Further, the pressure conditions of gas flow are of great relevance for atomization process.

Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:Tagungsband wurde begutachtet.
Title:Numerical Investigation of Spray Formation in Coaxial Nozzles
Authors:
AuthorsInstitution or Email of Authors
Konstantinov, MikhailUNSPECIFIED
Wagner, ClausUNSPECIFIED
Date:September 2008
Journal or Publication Title:ILASS 2008, Conference Proceedings
Refereed publication:Yes
In ISI Web of Science:No
Series Name:Conference Proceedings on CD-ROM
ISBN:978-88-903712-0-2
Status:Published
Keywords:CFD, Laval Nozzle, Coaxial Nozzle, Atomization, Spray
Event Title:22nd European Conference on Liquid Atomization and Spray Systems
Event Location:Como Lake, Italy
Event Type:international Conference
Event Dates:2008-09-08 - 2008-09-10
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Verkehrsentwicklung und Umwelt (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Dr.-Ing.habil. Mykhailo Konstantynov
Deposited On:29 Sep 2008
Last Modified:12 Dec 2013 20:32

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