Abstract
We examine the support for the Batchelor spectrum from well-resolved simulations of high-Schmidt-number mixing in isotropic turbulence, and resolve a conundrum with respect to the numerical value of the prefactor, also known as the Batchelor constant. Our conclusion is that the most probable value of the most compressive principal strain rate is more relevant than its mean, at least asymptotically.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 549-566 |
| Number of pages | 18 |
| Journal | Flow, Turbulence and Combustion |
| Volume | 85 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - Dec 2010 |
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Keywords
- Batchelor spectrum
- High Schmidt number simulations
- Passive scalar
- Turbulent mixing
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Physics and Astronomy(all)
- Chemical Engineering(all)
Cite this
The batchelor spectrum for mixing of passive scalars in isotropic turbulence : Submitted for the special issue dedicated to S. B. Pope. / Donzis, Diego A.; Sreenivasan, K. R.; Yeung, P. K.
In: Flow, Turbulence and Combustion, Vol. 85, No. 3-4, 12.2010, p. 549-566.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The batchelor spectrum for mixing of passive scalars in isotropic turbulence
T2 - Submitted for the special issue dedicated to S. B. Pope
AU - Donzis, Diego A.
AU - Sreenivasan, K. R.
AU - Yeung, P. K.
PY - 2010/12
Y1 - 2010/12
N2 - We examine the support for the Batchelor spectrum from well-resolved simulations of high-Schmidt-number mixing in isotropic turbulence, and resolve a conundrum with respect to the numerical value of the prefactor, also known as the Batchelor constant. Our conclusion is that the most probable value of the most compressive principal strain rate is more relevant than its mean, at least asymptotically.
AB - We examine the support for the Batchelor spectrum from well-resolved simulations of high-Schmidt-number mixing in isotropic turbulence, and resolve a conundrum with respect to the numerical value of the prefactor, also known as the Batchelor constant. Our conclusion is that the most probable value of the most compressive principal strain rate is more relevant than its mean, at least asymptotically.
KW - Batchelor spectrum
KW - High Schmidt number simulations
KW - Passive scalar
KW - Turbulent mixing
UR - http://www.scopus.com/inward/record.url?scp=78649447001&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78649447001&partnerID=8YFLogxK
U2 - 10.1007/s10494-010-9271-6
DO - 10.1007/s10494-010-9271-6
M3 - Article
VL - 85
SP - 549
EP - 566
JO - Flow, Turbulence and Combustion
JF - Flow, Turbulence and Combustion
SN - 1386-6184
IS - 3-4
ER -