ANALYSIS of the HELICAL SCREW RHEOMETER FOR FLUID FOOD
MAGDALENA S. TAMURA
Department of Agricultural Engineering University of California, Davis
Current address: Ares-Serono, 15 BIS, Chemin Des Mines CH1211, Geneva, Switzerland.
Search for more papers by this authorCorresponding Author
JERALD M. HENDERSON
Departments of Mechanical Engineering and Food Science & Technology University of California, Davis
Correspondence: J.M. Henderson, Mechanical Engineering, University of California, Davis, CA 95616.Search for more papers by this authorROBERT L. POWELL
Department of Chemical Engineering University of California, Davis
Search for more papers by this authorCHARLES F. SHOEMAKER
Department of Food Science & Technology University of California, Davis
Search for more papers by this authorMAGDALENA S. TAMURA
Department of Agricultural Engineering University of California, Davis
Current address: Ares-Serono, 15 BIS, Chemin Des Mines CH1211, Geneva, Switzerland.
Search for more papers by this authorCorresponding Author
JERALD M. HENDERSON
Departments of Mechanical Engineering and Food Science & Technology University of California, Davis
Correspondence: J.M. Henderson, Mechanical Engineering, University of California, Davis, CA 95616.Search for more papers by this authorROBERT L. POWELL
Department of Chemical Engineering University of California, Davis
Search for more papers by this authorCHARLES F. SHOEMAKER
Department of Food Science & Technology University of California, Davis
Search for more papers by this authorABSTRACT
The Helical Screw Rheometer (HSR) is being evaluated for rheological measurements of fluid food suspensions. the HSR consists of a helical screw enclosed in a tight fitting cylinder. With a closed system the inner screw is rotated creating a linearly increasing pressure differential along the axis of the screw, which is proportional to the viscosity of the fluid. This paper presents theoretical one- and two-dimensional flow analyses for Newtonian fluids using both rectangular and cylindrical coordinates. For non-Newtonian fluids a one-dimensional rectangular analysis was developed using the power law model.
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