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Turbulent shear-layer mixing at high Reynolds numbers : effects of inflow conditions
| Content Provider | Semantic Scholar |
|---|---|
| Abstract | We report on the results from a set of incompressible, shear-layer flow experiments, at high Reynolds number (Reδ ≡ ρ∆U δT (x)/μ ' 2 × 10), in which the inflow conditions of shear-layer formation were varied (δT is the temperature-rise thickness for chemically-reacting shear layers). Both inert and chemically-reacting flows were investigated, the latter employing the (H2 +NO)/F2 chemical system in the kineticallyfast regime to measure molecular mixing. Inflow conditions were varied by perturbing each, or both, boundary layers on the splitter plate separating the two freestream flows, upstream of shear-layer formation. The results of the chemically-reacting ‘flip experiments’ reveal that seemingly small changes in inflow conditions can have a significant influence not only on the large-scale structure and shear-layer growth rate, as had been documented previously, but also on molecular mixing and chemicalproduct formation, far downstream of the inflow region. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://authors.library.caltech.edu/28842/1/SLEjfm98.pdf |
| Alternate Webpage(s) | http://www.cco.caltech.edu/~pxdgroup/pdf/Slessor_BD_JFM1998.pdf |
| Alternate Webpage(s) | http://www.dimotakis.caltech.edu/pdf/Slessor_BD_JFM1998.pdf |
| Alternate Webpage(s) | http://www.its.caltech.edu/~pxdgroup/pdf/Slessor_BD_JFM1998.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
