### Abstract

Weak turbulent mixing processes increase the effective exchange rate of a passive additive between a small element of fluid and its surroundings. An approximate mean Green's function, controlled by molecular and turbulent diffusion, is used to estimate this exchange rate at high Schmidt numbers for a fully-developed turbulent flow near a rigid interface. The calculations show that turbulent mixing decreases the magnitude of the diffusive and retarding contributions to the turbulent flux and that this leads to a net decrease in the mass transfer rate.

Language | English (US) |
---|---|

Pages | 311-333 |

Number of pages | 23 |

Journal | Chemical Engineering Communications |

Volume | 20 |

Issue number | 5-6 |

State | Published - 1983 |

### Profile

### ASJC Scopus subject areas

- Chemical Engineering(all)

### Cite this

*Chemical Engineering Communications*,

*20*(5-6), 311-333.

**ESTIMATES OF AVERAGE MASS TRANSFER RATES USING AN APPROXIMATE HYDRODYNAMIC GREEN'S FUNCTION.** / Snellenberger, R. W.; Petty, C. A.

Research output: Contribution to journal › Article

*Chemical Engineering Communications*, vol 20, no. 5-6, pp. 311-333.

}

TY - JOUR

T1 - ESTIMATES OF AVERAGE MASS TRANSFER RATES USING AN APPROXIMATE HYDRODYNAMIC GREEN'S FUNCTION.

AU - Snellenberger,R. W.

AU - Petty,C. A.

PY - 1983

Y1 - 1983

N2 - Weak turbulent mixing processes increase the effective exchange rate of a passive additive between a small element of fluid and its surroundings. An approximate mean Green's function, controlled by molecular and turbulent diffusion, is used to estimate this exchange rate at high Schmidt numbers for a fully-developed turbulent flow near a rigid interface. The calculations show that turbulent mixing decreases the magnitude of the diffusive and retarding contributions to the turbulent flux and that this leads to a net decrease in the mass transfer rate.

AB - Weak turbulent mixing processes increase the effective exchange rate of a passive additive between a small element of fluid and its surroundings. An approximate mean Green's function, controlled by molecular and turbulent diffusion, is used to estimate this exchange rate at high Schmidt numbers for a fully-developed turbulent flow near a rigid interface. The calculations show that turbulent mixing decreases the magnitude of the diffusive and retarding contributions to the turbulent flux and that this leads to a net decrease in the mass transfer rate.

UR - http://www.scopus.com/inward/record.url?scp=0020633589&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0020633589&partnerID=8YFLogxK

M3 - Article

VL - 20

SP - 311

EP - 333

JO - Chemical Engineering Communications

T2 - Chemical Engineering Communications

JF - Chemical Engineering Communications

SN - 0098-6445

IS - 5-6

ER -