A Numerical Study of Cavitating Flow Through Various Nozzle Shapes 971597
The flow through diesel fuel injector nozzles is important because of the effects on the spray and the atomization process. Modeling this nozzle flow is complicated by the presence of cavitation inside the nozzles. This investigation uses a two-dimensional, two-phase, transient model of cavitating nozzle flow to observe the individual effects of several nozzle parameters. The injection pressure is varied, as well as several geometric parameters. Results are presented for a range of rounded inlets, from r/D of 1/40 to 1/4. Similarly, results for a range of L/D from 2 to 8 are presented. Finally, the angle of the corner is varied from 50° to 150°. An axisymmetric injector tip is also simulated in order to observe the effects of upstream geometry on the nozzle flow. The injector tip calculations show that the upstream geometry has a small influence on the nozzle flow. The results demonstrate the model's ability to predict cavitating nozzle flow in several different geometries.
Citation: Schmidt, D., Rutland, C., and Corradini, M., "A Numerical Study of Cavitating Flow Through Various Nozzle Shapes," SAE Technical Paper 971597, 1997, https://doi.org/10.4271/971597. Download Citation
Author(s):
David P. Schmidt, Christopher J. Rutland, M. L. Corradini
Affiliated:
University of Wisconsin-Madison
Pages: 12
Event:
International Spring Fuels & Lubricants Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Advances in SI and Diesel Engine Modeling-SP-1276, SAE 1997 Transactions - Journal of Engines-V106-3
Related Topics:
Diesel fuels
Nozzles
Simulation and modeling
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