Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Fuzhong Qi"'
Publikováno v:
Cereal Research Communications. 42:282-292
Two fundamental test systems were used to evaluate the visco-elastic properties of doughs from wheat samples of three varieties grown at four distinct sites. For comparison, tests were also performed with traditional equipment, namely the Mixograph,
Publikováno v:
Journal of Rheology. 58:183-198
We have measured the viscometric functions (η, N1, and N2) for a suspension of noncolloidal spherical particles in a Boger fluid matrix. The polymethyl methacrylate particles were nominally 40 μm in size, and the matrix fluid was similar to that us
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 201:130-134
The viscometric functions ( η , N 1 and N 2 ) for non-colloidal suspensions of spheres in a Boger fluid matrix were measured. Volume fractions ( ϕ ) of 5%, 10% and 20% were investigated. The relative viscosity ( η r = η / η 0 ) and the (positive
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 198:18-23
Due to the potentially anisotropic microstructure of bread dough, the pre-test deformation produced during the making of the specimens significantly affects the rheological properties of dough, and the resistance to deformation is increased. Some new
Publikováno v:
Journal of Rheology. 57:493-510
We present the results of measuring the three viscometric functions [the relative viscosity ηr, and the first (N1) and second (N2) normal stress differences] for nominally monosize sphere suspensions in a silicone fluid, which is nominally Newtonian
Publikováno v:
Rheologica Acta. 52:291-295
We have collected six sets of results for the ratio of the second normal stress difference to the shear stress $(N_{2}/\tau )$ in non-colloidal suspensions of spheres in Newtonian matrices. They all show a near-cubic dependence on the volume fraction
Autor:
Fuzhong Qi, Roger I. Tanner
Publikováno v:
Rheologica Acta. 51:289-302
Multimodal suspensions, consisting of non-colloidal spherical particles and a Newtonian matrix, are considered. A new differential (or multi-scale mean field approach) model for the relative viscosity of multimodal suspensions has been developed. The
Publikováno v:
Journal of Cereal Science. 54:224-228
We regard gluten dough as a mixture of gluten, starch and water. We show that stress intensification around the starch particles enables one to describe the rapid strain softening of dough at low strains. The starch is in the form of a combination of
Autor:
Fuzhong Qi, Roger I. Tanner
Publikováno v:
Korea-Australia Rheology Journal. 23:105-111
A new differential (or multi-scale, mean field approach) model for the relative viscosity of bimodal suspensions is discussed in this paper. Solid spherical particles with a bimodal size distribution in a Newtonian solvent are considered. The problem
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 203:51-53
A sphere falling along the vorticity axis of a shear flow in a viscoelastic fluid is known to experience an increase in drag from the value in a quiescent fluid (van den Brule and Gheissary, 1993). Two recent papers have analysed the problem and this