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Systematic Velocity Data Reduction and its Effect on Polymer Conformation Statistics in Viscoelastic Turbulent Channel Flows
| Content Provider | Semantic Scholar |
|---|---|
| Author | Samanta, Gaurab Beris, Antony N. Handler, Robert A. Housiadas, Kostas D. |
| Copyright Year | 2008 |
| Abstract | Turbulent drag reduction by polymer additives is still used in energy and cost saving applications, especially in oil-pipelines. From a theoretical perspective, it is an important problem as it deals with turbulence and rheology. An in-depth understanding of this phenomenon can provide useful insights into the physics of turbulent flows. Since its discovery in 1940s, [1-3], several experimental studies, [4-7], were done to probe into the physical mechanism behind polymer-induced turbulent drag reduction. Of many theories that resulted from previous experimental investigations, viscoelastic modification of turbulence was able to explain most of the experimental observations. However, experimentally it is very difficult to explore the small scale turbulent structures. These turbulence scales are associated with higher velocity gradients which play a major role in determining the polymer conformation within the flow. With the advent of direct numerical simulation (DNS) of viscoelastic turbulent flows, it became possible to get a detailed evaluation of the structural and statistical features of the flow, [8-10]. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://folk.ntnu.no/skoge/prost/proceedings/aiche-2008/data/papers/P128681.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
