Pressure gradients and the corresponding mass flow rates of five different
non-Newtonian fluid foods: 1% solutions of sodium alginate and CMC, 1.5% CM
C solution, two different tomato ketchups, oyster sauce, in four different
diameter stainless steel tubes ranging from 7.51 to 16.34 mm i.d. were reco
rded using a tube viscometer capable of operating in both transient and con
tinuous flow modes. The flow was confined to the laminar flow regime and ap
preciable slippage occurred in all cases. Power law parameters for the tube
flow obtained from the plots of wall shear stress versus apparent wall she
ar rate are presented for various time-independent fluids in different diam
eter tubes in original and slip-corrected forms. Such experimental data sho
uld prove useful in developing an understanding of flow characterization of
non-Newtonian fluids. (C) 2001 Elsevier Science Ltd. All rights reserved.