EVALUATING SHEAR RATES FOR POWER LAW FLUIDS IN MIXER VISCOMETRY

被引：27

作者：

CASTELLPEREZ, ME

STEFFE, JF

机构：

[1] MICHIGAN STATE UNIV,DEPT AGR ENGN,E LANSING,MI 48824

[2] MICHIGAN STATE UNIV,DEPT FOOD SCI & HUMAN NUTR,E LANSING,MI 48824

来源：

JOURNAL OF TEXTURE STUDIES | 1990年 / 21卷 / 04期

关键词：

D O I：

10.1111/j.1745-4603.1990.tb00493.x

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Established mixer viscometry methods, the viscosity matching and the slope methods, were evaluated for determining average shear rates when agitating time-independent, non-Newtonian fluids. Results indicate that the use of a constant value of the mixer proportionally constant, k', is not valid for all ranges of fluid rheological properties, system geometry (impeller and cup) and impeller rotational speed. A small impeller-to-cup diameter ratio and impeller rotational speeds greater than .33 rev/s (20 rpm) provide the optimum operating parameters for evaluation of k'.

引用

页码：439 / 453

页数：15

共 13 条

[1] BECKNER JL, 1966, TRANS INST CHEM ENG, V44, pT224
[2] CALDERBANK PH, 1961, T I CHEM ENG-LOND, V39, P338
[3] CASTELLPEREZ ME, 1990, THESIS MICHIGAN STAT
[4] CASTELLPEREZ ME, 1991, VISCOELASTIC PROPERT, pCH10
[5] EFFECTS OF SHEAR-THINNING BEHAVIOR ON MIXER VISCOMETRY TECHNIQUES
MACKEY, KL
MORGAN, RG
STEFFE, JF
[J]. JOURNAL OF TEXTURE STUDIES, 1987, 18 (03) : 231 - 240
[6] MAGNUSSON K, 1952, IVA, V23, P86
[7] AGITATION OF NON-NEWTONIAN FLUIDS
METZNER, AB
OTTO, RE
[J]. AICHE JOURNAL, 1957, 3 (01) : 3 - 10
[8] Nagata S., 1975, MIXING PRINCIPLES AP
[9] RAO M A, 1975, Journal of Texture Studies, V6, P533
[10] Rao M. A., 1984, Journal of Texture Studies, V15, P327, DOI 10.1111/j.1745-4603.1984.tb00390.x

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