Assumed PDF modelling and PDF structure investigation using finite-rate chemistry
by Peter Gerlinger, Berthold Noll, Manfred Aigner
Progress in Computational Fluid Dynamics, An International Journal (PCFD), Vol. 5, No. 6, 2005

Abstract: An assumed probability density function (PDF) approach is used for the simulation of turbulent high speed combustion with finite-rate chemistry. The PDFs employed are a clipped Gaussian distribution for temperature and a joint multi-variate β-distribution for an arbitrary number of species mass fractions. The definition of both PDFs is based on higher order moments obtained from additional transport equations. In the present work, a transport equation for the variance of temperature and the sum of species mass fraction variances is solved. The numerical approach is compared with experimental data of a Mach 2 supersonic hydrogen-air diffusion flame. The focus of this paper is on the investigation of the marginal PDFs of temperature and species molar fractions at representative spatial positions. Moreover, two-dimensional marginal PDFs of pairs of species mass fractions are compared with experimental results. It is shown that the assumed PDF approach achieves a good agreement with experimental data concerning first and second moments and that even the shape of the PDF is met relatively well.

Online publication date: Tue, 17-May-2005

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the Progress in Computational Fluid Dynamics, An International Journal (PCFD):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com