Assessment on Internal Nozzle Flow Initialization in Diesel Spray Simulations 2015-01-0921
Proper initial conditions are essential to successfully perform a simulation, especially for highly transient problems such as Diesel spray injection. Until now, no much attention has been paid to the internal nozzle flow initialization because spray simulations are usually decoupled from the nozzle. However, new homogeneous models like Eulerian Spray Atomization (ESA) model allow to simulate the internal nozzle flow and the spray seamlessly. Therefore, the behavior of the spray for the first microseconds is highly influenced by the initial conditions inside the nozzle. Furthermore, last experiments confirm the presence of gas inside the nozzle between successive injections. This work deals with the initialization procedure in a way that mass flow rate and spray penetration curves are well predicted by the model.
Citation: Payri, R., Gimeno, J., Marti-Aldaravi, P., and Carreres, M., "Assessment on Internal Nozzle Flow Initialization in Diesel Spray Simulations," SAE Technical Paper 2015-01-0921, 2015, https://doi.org/10.4271/2015-01-0921. Download Citation
Author(s):
Raul Payri, Jaime Gimeno, Pedro Marti-Aldaravi, Marcos Carreres
Affiliated:
Universitat Politècnica de València
Pages: 7
Event:
SAE 2015 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Fuel Injection and Sprays, 2015-SP-2354
Related Topics:
Nozzles
Simulation and modeling
Gases
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