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Chemical efficiency of reactive microflowswith heterogeneous catalysis: a lattice Boltzmann study

Published online by Cambridge University Press:  15 October 2001

S. Succi ,
A. Gabrielli ,
G. Smith  and
E. Kaxiras
S. Succi
Affiliation:
Istituto di Applicazioni Calcolo, CNR, viale Policlinico 137, 00161 - Roma, Italy Visiting Scholar, Lyman Laboratory, Department of Physics, Harvard University, Cambridge MA 02138, USA
A. Gabrielli*
Affiliation:
INFM, Dipartimento di Fisica, Università di Roma “La Sapienza”, P.le A. Moro 2, 00185 - Roma, Italy
G. Smith
Affiliation:
Lyman Laboratory, Department of Physics, Harvard University, Cambridge MA 02138, USA
E. Kaxiras
Affiliation:
Lyman Laboratory, Department of Physics, Harvard University, Cambridge MA 02138, USA
*
[email protected]
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Abstract

We investigate the effects of geometrical micro-irregularities on the conversion efficiency of reactive flows in narrow channels of millimetric size. Three-dimensional simulations, based upon a Lattice-Boltzmann-Lax-Wendroff code, indicate that periodic micro-barriers may have an appreciable effect on the effective reaction efficiency of the device. Once extrapolated to macroscopic scales, these effects can result in a sizeable increase of the overall reaction efficiency.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 16 , Issue 1 , October 2001 , pp. 71 - 84
Copyright
© EDP Sciences, 2001

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References

F. Abraham, J. Broughton, N. Bernstein, E. Kaxiras, Comp. Phys. 12/6, 538 (1998).
E. Oran, J. Boris, Numerical simulation of reactive flows, Elsevier Science, New York, 1987.
Bekri, S., Thovert, J.F., Adler, P.M., Chem. Eng. Sci. 50, 2765 (1995)
Ertl, G., Freund, H.J., Catalysis and surface science, Phys. Today 52, 32 (1999). CrossRef
Mc Namara, G., Zanetti, G., Phys. Rev. Lett. 61, 2332 (1988). CrossRef
Higuera, F., Succi, S., Benzi, R., Europhys. Lett. 9, 345 (1989). CrossRef
Benzi, R., Succi, S., Vergassola, M., Phys. Rep. 222, 145 (1992). CrossRef
Qian, Y., d'Humieres, D., Lallemand, P., Europhys. Lett. 17, 149 (1989).
Succi, S., Bella, G., Chen, H., Molvig, K., Teixeira, C., J. Comp. Phys. 152, 493 (1999). CrossRef
Cancelliere, A., Chang, E., Foti, E., Succi, S., Rothman, D., Phys. Fluids A 2, 2085 (1990). CrossRef
Stepanek, F., Kubicek, M., Marek, M., Adler, P.M., Chem. Eng. Sci. 54, 1493 (1999).
He, X., Luo, L., Phys. Rev. E 55, 6333 (1997). CrossRef
J.S. Andrade, M. Filoche, B. Sapoval, Europhys. Lett. to appear, cond-mat/0012258.
S. Succi, G. Smith, E. Kaxiras, J. Stat. Phys., submitted (2001).
A. Bergmann, R. Bruck, C. Kruse, Society of Automotive Engineers (SAE) technical paper SAE 971027, Proceedings of the 1997 International SAE Congress, Detroit, USA, February 1997.