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Glass Bead BTC

Glass Bead BTC

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Glass Bead BTC

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  1. Glass Bead BTC

  2. Cubic Packings and Porosity Simple Cubic Body-Centered Cubic Face-Centered Cubic n = 0. 0.48 n = 0. 26 n = 0.26 http://members.tripod.com/~EppE/images.htm

  3. FCC and BCC have same porosity • Bottom line: n ≈ 0.4 http://uwp.edu/~li/geol200-01/cryschem/ Smith et al. 1929, PR 34:1271-1274

  4. Beads • 80 -120 mesh • = 224 -149 mm • Average size: 186.5 mm

  5. Observations/Computations • Qmean = 1.135 ml min-1 • A = p(2.54 cm/2)2 • q = Q/A= 0.224 cm min-1 = 0.00373 cm s-1 • v = q/n = 0.00931 cm s-1 • Dm≈ 10-5 cm2 s-1 • Pe = vL/Dm = 17.3 • log Pe = 1.2

  6. Get D*

  7. Observations/Computations • log D* = log (D/Dm) = 1.2 • D = 17Dm • D = 0.00017cm2 s-1

  8. Breakthrough Curves