Assessment on Internal Nozzle Flow Initialization in Diesel Spray Simulations

2015-01-0921

04/14/2015

Event
SAE 2015 World Congress & Exhibition
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2015-01-0921
Pages
7
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.
Additional Details
Publisher
Published
Apr 14, 2015
Product Code
2015-01-0921
Content Type
Technical Paper
Language
English