Abstract
In this numerical study, several traditional scalar dissipation rate models are used for scalar transport modelling in mixing turbulent round jets with co-flowing air. These models are implemented into a second order turbulence closure model and are compared to the published experimental data. It is shown that the assumption of equal time scales for dynamic and scalar turbulence is no longer needed when the algebraic non-equal scales model or the transport equation model are used. The influence of these models on scalar mixture fraction, unmixedness, half-width of the jet and time scale ratio are examined. It is shown that the trends, which are observed in the experiments, are reproduced qualitatively by the non-equal scales model.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
