Han Yajun and Jiang Tiqian(East China Institute of Chemical Technology, Shanghai). Study on the Effect of Wall Slip for Sesbania Gum Flowing Through Capillary Tubes and Porous Media[J]. CIESC Journal, 1990, (1).
Han Yajun and Jiang Tiqian(East China Institute of Chemical Technology, Shanghai). Study on the Effect of Wall Slip for Sesbania Gum Flowing Through Capillary Tubes and Porous Media[J]. CIESC Journal, 1990, (1).DOI:
The flow behavior of Sesbania gum fracturing fluid through capillary tubes and porous media was studied experimentally. The gum exhibited yield values and power law behavior described by Herschel-Bulkley model both in capillary tubes and porous media. The flow was accompanied by significant positive slip effects in capillary tubes
whereas negative slip effects in porous media
under moderate shear rates. In the absence of apparent slip effects
the capillary-Herschel-Bulkley(C. H. B. ) model developed in this paper predicted the superficial velocities in the porous media with an average error of less than 10%. This provides a direct verification of the applicability of the C. H. B. model to the flow behavior of Sesbania gum in a limited range without considering "anomalous" wall effects.