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Unformatted text preview: 3.8 Some simple "mean flow" (or "zero−equation") closure models, motivated by analogy with the kinetic theory of gases: Prandtl’s (momentum−transfer) mixing length hypothesis; Prandtl’s modified mixing length hypothesis; Prandtl’s second hypothesis for free turbulent flows (jets, wakes); Taylor’s (vorticity−transfer) mixing length hypothesis. Simple hypotheses for the mixing length. 3.9 Preview of more complex closure models: one−equation models, two− equation models (e. g. k− ε model), stress tensor models. References Chapters 3 and 4 of Pope. Chapters 1 and 2 of Tennekes & Lumley (for Sec. 3.3, see pp 19−24.) For Sec. 3.5−3.7, read for example White. 2nd ed . 402−409 For Sec. 3.8, read for example Schlichting. 7th e d. 578−586, or White: 436−440....
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This note was uploaded on 09/16/2011 for the course ME 563 taught by Professor Staff during the Spring '11 term at Auburn University.
- Spring '11