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Conditional statistics for passive-scalar mixing in a confined rectangular turbulent jet
| Content Provider | Semantic Scholar |
|---|---|
| Author | Feng, Heng Olsen, Michael G. Fox, Rodney O. Hill, James C. |
| Copyright Year | 2007 |
| Abstract | Experimental results for the conditional statistics, such as the velocity conditioned on a conserved scalar and the scalar conditioned on velocity, in a confined liquid-phase rectangular jet are presented and analyzed for a data set collected using simultaneous particle image velocimetry and planar laser-induced fluorescence. The joint velocity-scalar probability density function (PDF) is not joint Gaussian in this flow, as the PDF of the conserved scalar is accurately described by a beta-PDF. The conditional mean velocity is found to agree with a linear model when the scalar is close to its local mean value. A gradient PDF model is found to give poor predictions for the streamwise conditional velocity. However, the improved gradient PDF model predicts both the streamwise and transverse conditional velocities well. A linear model for the scalar fluctuation conditioned on velocity is also tested against the experimental data, showing that this model only obtains good approximations when the joint velocity-... |
| Starting Page | 055104 |
| Ending Page | 055104 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.2718580 |
| Volume Number | 19 |
| Alternate Webpage(s) | https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1105&context=cbe_pubs |
| Alternate Webpage(s) | https://doi.org/10.1063/1.2718580 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
