Abstract
In Turbulent reactive flows the fluid composition at a point changes due to convection, reaction, and mixing (i.e., molecular transport). Modeling approaches based on the transport equation for the joint probability density function (jpdf) of velocity and composition have proved successful, largely because convection and reaction can be treated exactly, without modeling assumptions. Mixing has to be modeled, however, and current mixing models are deficient in several respects. The first contribution of this article is to define a model problem pertaining to turbulent diffusion flames in the flamelet regime. When applied to this problem, existing models incorrectly yield composition jpdfs corresponding to distributed combustion. The second contribution is to develop and demonstrate a new class of mixing models that performs satisfactorily for the model problem, and also for the case of the decaying field of a conserved scalar.
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.
