Published 1993
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Molecular mixing in turbulent flow
Description
The evolution of a diffusive scalar field subject to turbulent stirring is investigated by comparing two new modeling approaches, the linear-eddy model and the clipped-laminar-profile representation, to results previously obtained by direct numerical simulation (DNS) and by mapping-closure analysis. The comparisons indicate that scalar field evolution is sensitive to the bandwidth of the stirring process, and they suggest that the good agreement between DNS and mapping closure reflects the narrowband character of both. The new models predict qualitatively new behaviors in the wideband stirring regime corresponding to high-Reynolds-number turbulence
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Additional details
Publishing Information
- Imprint Title
- Eleventh symposium on energy engineering sciences: Proceedings
- Imprint Pagination
- 300 p.
- Journal Page Range
- p. 248-254.
- Report number
- CONF-9305134--
Conference
- Title
- 11. symposium on energy engineering sciences.
- Dates
- 3-5 May 1993.
- Place
- Argonne, IL (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25034006
- Subject category
- S42: ENGINEERING;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- COMPUTERIZED SIMULATION; MIXING; MOLECULES; NUMERICAL SOLUTION; REYNOLDS NUMBER; TURBULENT FLOW
- Descriptors DEC
- FLUID FLOW; SIMULATION