نتایج جستجو برای: Falling-Cylinder Rheometer

تعداد نتایج: 41645  

The present study attempted deriving and solving the falling- cylinder governing equations for power law model non-Newtonian fluids. Based on this theoretical study, a novel falling- cylinder rheometer (FCR) was designed and constructed to measure the Theological properties of non-Newtonian fluids. Different falling cylinders with predesigned densities were used to determine the apparent viscos...

2017
Ruien Hu John Crawshaw

A rheometer system to measure the rheology of crude oil in equilibrium with carbon dioxide (CO2) at high temperatures and pressures is described. The system comprises a high-pressure rheometer which is connected to a circulation loop. The rheometer has a rotational flow-through measurement cell with two alternative geometries: coaxial cylinder and double gap. The circulation loop contains a mix...

Journal: :journal of sciences islamic republic of iran 0

following recent works of several authors like huilgol, bhattacharya etd. and javadpour et al., this paper is to contribute further to the literature of axial flow in a rotational coaxial rheometer. we consider axial flow of herschel bulkley mode1 between two concentric cylinders with the inner one rotating, while the outer cylinder is held stationary. an attempt has been made to direct the ana...

2005
R. CHEN

Cereal Chem. 70(l):59-63 A capillary extrusion rheometer was employed for detailed investigation coefficient of 2,395 Pa-sec 03 4 . The flow curves, corrected for end effects of the flow behavior of wheat flour-water dough. Dough was extruded and for effect of die diameter on shear rates, were independent of capillary at ambient conditions through capillaries of different lengths and diamdimens...

Following recent works of several authors like Huilgol, Bhattacharya etd. and Javadpour et al., this paper is to contribute further to the literature of axial flow in a rotational coaxial rheometer. We consider axial flow of Herschel Bulkley mode1 between two concentric cylinders with the inner one rotating, while the outer cylinder is held stationary. An attempt has been made to direct the...

2007
Manishika Agaskar Brenton Partridge Eileen Yang

The pharmaceutical industry requires the use of lubricants to prevent static electric buildup in the cohesive powders that are processed in manufacturing plants. In this report we examine the effects of common lubricant magnesium stearate on two flow properties, flow index and dynamic dilation, of lactose. We conducted two experiments using a gravitational displacement rheometer and a dynamic d...

Journal: :علوم کاربردی و محاسباتی در مکانیک 0
امین امیری دلوئی محمد حسن کیهانی محسن نظری

in the current study, the immersed boundary – non-newtonian lattice boltzmann method is developed for simulation of forces act on a particle and also for computation of the particle velocity in vicinity of non-newtonian fluids. in this research, the effect of extra force due to accelerated mass is also considered in non-newtonian particle motion equations. two applied problems of power-law non-...

2016
Alex Olivas Michelle A. Helsel Nicos S. Martys Chiara F. Ferraris William L. George Raissa Ferron

Rheological measurements of suspensions are often performed using a rotational rheometer. In this type of rheometer, the tested fluid is sheared between two surfaces, one of which is rotating to generate a laminar flow of the fluid between the surfaces (i.e., a Couette flow). Manufacturers of commercially available rheometers generally recommend the use of a standard oil of known viscosity to v...

Journal: :Proceedings of the Imperial Academy 1933

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