Abstract
An intermittent spray is frequently used for the fuel injection into an engine or spray painting. Droplets are distributed ununiformly in a spray. In this study, one-shot injection of a diesel like spray is analyzed. A diesel spray is the unnsteady phenomena, Large-Eddy Simulation (LES) is suitable method to analyze the sprya phenomena. Standard Smagorinsky model (SSM) and Dynamic Smagorinsky model (DSM) are employed for Subgrid-scale (SGS) modeling. However, local flow structure in the spray is varies with location, it is expected that SSM is a low repeatable precision in it. On the other hand, DSM is advantageous because it can respond to changes in loacal flow structures. We executed SSM and computation to compare both models, and compared the calculation results with an experiment in terms of the spray tip penetration and the vortical structure. In consequence, we obtained that DSM is better suited for representation of spray inhomogeneous distribution.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.