Mixing times and mixing time correlations revisited by means of Les

Hugo Hartmann; Jos J. Derksen; Harry E.A. Van Den Akker

Mixing times and mixing time correlations revisited by means of Les

Hugo Hartmann, Jos J. Derksen, Harry E.A. Van Den Akker

School of Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

The mixing performance in a turbulent stirred vessel provided with a Rushton turbine is studied numerically by means of large eddy simulations (LES). To the LES (with a Smagorinsky subgrid scale model), a finite volume scheme is coupled that solves the convection-diffusion equation of a passive tracer. Numerical simulations such as those presented possess all information needed to enable a careful comparison between simulated mixing times and those obtained by experiments and correlations. A parameter study is carried out by varying impeller size and injection posotion of a passive tracer. Generally, the simulated mixing times are close to empirical mixing correlations. Finally, Ruszkowski's correlation is re-evaluated and commented.

Original language	English
Pages	3991
Number of pages	1
Publication status	Published - 2005
Event	05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States Duration: 30 Oct 2005 → 4 Nov 2005

Conference

Conference	05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
Country/Territory	United States
City	Cincinnati, OH
Period	30/10/05 → 4/11/05

Cite this

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title = "Mixing times and mixing time correlations revisited by means of Les",

abstract = "The mixing performance in a turbulent stirred vessel provided with a Rushton turbine is studied numerically by means of large eddy simulations (LES). To the LES (with a Smagorinsky subgrid scale model), a finite volume scheme is coupled that solves the convection-diffusion equation of a passive tracer. Numerical simulations such as those presented possess all information needed to enable a careful comparison between simulated mixing times and those obtained by experiments and correlations. A parameter study is carried out by varying impeller size and injection posotion of a passive tracer. Generally, the simulated mixing times are close to empirical mixing correlations. Finally, Ruszkowski's correlation is re-evaluated and commented.",

author = "Hugo Hartmann and Derksen, {Jos J.} and {Van Den Akker}, {Harry E.A.}",

year = "2005",

language = "English",

pages = "3991",

note = "05AIChE: 2005 AIChE Annual Meeting and Fall Showcase ; Conference date: 30-10-2005 Through 04-11-2005",

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TY - CONF

T1 - Mixing times and mixing time correlations revisited by means of Les

AU - Hartmann, Hugo

AU - Derksen, Jos J.

AU - Van Den Akker, Harry E.A.

PY - 2005

Y1 - 2005

N2 - The mixing performance in a turbulent stirred vessel provided with a Rushton turbine is studied numerically by means of large eddy simulations (LES). To the LES (with a Smagorinsky subgrid scale model), a finite volume scheme is coupled that solves the convection-diffusion equation of a passive tracer. Numerical simulations such as those presented possess all information needed to enable a careful comparison between simulated mixing times and those obtained by experiments and correlations. A parameter study is carried out by varying impeller size and injection posotion of a passive tracer. Generally, the simulated mixing times are close to empirical mixing correlations. Finally, Ruszkowski's correlation is re-evaluated and commented.

AB - The mixing performance in a turbulent stirred vessel provided with a Rushton turbine is studied numerically by means of large eddy simulations (LES). To the LES (with a Smagorinsky subgrid scale model), a finite volume scheme is coupled that solves the convection-diffusion equation of a passive tracer. Numerical simulations such as those presented possess all information needed to enable a careful comparison between simulated mixing times and those obtained by experiments and correlations. A parameter study is carried out by varying impeller size and injection posotion of a passive tracer. Generally, the simulated mixing times are close to empirical mixing correlations. Finally, Ruszkowski's correlation is re-evaluated and commented.

UR - http://www.scopus.com/inward/record.url?scp=33645640999&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:33645640999

SP - 3991

T2 - 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase

Y2 - 30 October 2005 through 4 November 2005

ER -

Mixing times and mixing time correlations revisited by means of Les

Abstract

Conference

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