Transverse dispersion at high Peclet numbers in short porous media

✍ Scribed by C. L. Hackert; J. L. Ellzey; O. A. Ezekoye; M. J. Hall

• Book ID: 104657305
• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 709 KB
• Volume: 21
• Category: Article
• ISSN: 0723-4864
• DOI: 10.1007/bf00190679

✦ Synopsis

Transverse dispersion is examined in short ceramic foams for a variety of pore sizes and flow rates. Experiments were performed with a localized smoke source as a tracer and a coflow of air. Digital images were taken of the resulting dispersion patterns, and an approximate transverse dispersion coefficient was determined. A precise dispersion coefficient cannot be defined at these high Peclet numbers (106-10 s) because the dispersion becomes non-Fickian. Nevertheless, the approximate coefficients are shown to be consistent with the values obtained by other researchers for lower Peclet numbers and longer porous media.