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Title:Coupled simulations of nozzle flow, primary fuel jet breakup, and spray formation
Authors:Berg, Eberhard von (Author)
Edelbauer, Wilfried (Author)
Alajbegović, Aleš (Author)
Tatschl, Reinhard (Author)
Volmajer, Martin (Author)
Kegl, Breda (Author)
Ganippa, Lionel C. (Author)
Files:URL http://dx.doi.org/10.1115/1.1914803
Work type:Unknown ()
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Presented are two approaches for coupled simulations of the injector flow withspray formation. In the first approach the two-fluid model is used within the injector for the cavitating flow. A primary breakup model is then applied at the nozzle orifice where it is coupled with the standard discrete droplet model. In the second approach the Eulerian multi-fluid model is applied for both the nozzle and spray regions. The developed primary breakup model, used in both approaches, is based on locally resolved properties of the cavitating nozzle flow across the orifice cross section. The model provides the initial droplet size and velocity distribution for the droplet parcels released from the surface of a coherent liquid core. The major feature of the predictions obtained with the model is a remarkable asymmetry of the spray. This asymmetryis in agreement with the recent observations at Chalmers University where they performed experiments using a transparent model scaled-up injector.The described model has been implemented into AVL FIRE computational fluid dynamics code which was used to obtain all the presented results.
Keywords:internal combustion engines, fuel injection, simulations
Year of publishing:2005
ISSN on article:0742-4795
COBISS_ID:9921046 Link is opened in a new window
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Record is a part of a journal

Title:Journal of engineering for gas turbines and power
Shortened title:J. eng. gas turbine power
Publisher:American Society of Mechanical Engineers
COBISS.SI-ID:6401543 New window

Secondary language

Keywords:motorji z notranjim zgorevanjem, vbrizgavanje gorva, simulacije


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