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Showing 1 to 12 of 12 for “"Model shear"”.
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Investigation of a solvent-free continuous process to produce pharmaceutical co-crystals. Understanding and developing solvent-free continuous cocrystallisation (SFCC) through study of co-crystal formation under the application of heat, model shear and twin screw extrusion, including development of a near infrared spectroscopy partial least squares quantification method
… the co-crystal yield. The level of mixing and shear was directly influenced by the screw geometry, whilst the screw speed was an important parameter for controlling the residence time of the material during hot melt extrusion. Ibuprofen – nicotinamide 1:1 cocrystals and carbamazepine – …
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Particle-wall shear stress measurements within the standpipe of a circulating fluidized bed
… could be due to forces such as particle-wall shear stress.;In this research the one-dimensional gas-solids mixture momentum balance is applied to the standpipe. Neglecting acceleration effects, the important forces are the gas and solids phase pressure drop, weight of the bed, and the …
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A ray model for head waves in a fluid-filled borehole
A model, suggested by tbe ray expansion of Roever et al., is constructed to rapidly generate the compressional and shear refracted arrivals, known as head waves, received from a point source on the axis of an ideal fluid-filled borehole. An impulse response is derived, and its frequency …
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Dimensionamento prático à força cortante de seções de concreto armado
Practical procedures for shear design of reinforced concrete members, with the aid of a programmable calculator, are hereby presented. These procedures result from simplifications on a mechanical model of a cracked reinforced concrete plate, aiming its application to the usual design of reinforced …
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Investigation of film cooling effectiveness from cylindrical cooling hole with anti vortex generator by numerical simulation
… from experimental data. The steady turbulence model shear stress transport (SST) that was used to simulate a film cooling configuration. The results have been presented in terms of laterally averaged film cooling comparison graphs, velocity field on x/d = 3.0, non-dimensional temperature on x/d …
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Finite volume analysis and optimisation of a high pressure homogeniser
… estimated and analysed using Fluent 6.3. The model was estimated by means of a stationary microbe model. Shear forces on microbes were analysed for various positions along the streamline of flow and compared. The homogeniser setup with the highest peak shear forces was used as an optimum …
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The analysis of shear wall structures and their interaction with elastic foundations
… are outlined and the advantages of the use of shear walls as the load bearing elements in such structures are indicated. It is shown that, although a considerable amount of research has been devoted to the analysis of multi-storey structures, very little attention has been paid to the effects …
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Axial, flexural and torsional rigidities of two-dimensional braided fibre composite medical catheters
The development of a one-piece braided model catheter with the same rigidities as the combined medical catheter-guidewire system presently employed during cardiovascular catheterization procedures is the principal goal of this research. This will result in a significant reduction in the time …
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A complete calculation of Shear Viscosity in Strongly Interacting matter
… gas of massless u,d,s quarks with the MIT Bag Model. Shear Viscosity of the strongly interacting Fermi liquid is then calculated in a low-temperature Boltzmann-Landau transport approach, yielding a slight deviation from the Abrikosov-Khalatnikov standard result at quark degrees of freedom …
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A quasi-dynamic and self-consistent rupture model to simulate earthquake ruptures
Dynamic earthquake rupture modeling provides information on the rupture physics as the rupture velocity, frictions or tractions acting during the rupture process. Nevertheless, as often based on spatial gridded preset geometries, dynamic modeling is depending on many free parameters leading to both …
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Novel formulations of a poorly soluble drug using the extrusion process.
… techniques. However, the high temperature and shear forces imparted by the extrusion process can limit its applications with heat sensitive active pharmaceutical ingredients (APIs). Artemisinin was selected as a model drug which being thermolabile in nature and possesses processing challenges …
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AN EQUIVALENT NON-UNIFORM INELASTIC BEAM-LIKE MODEL FOR THE SEISMIC VULNERABILITY ASSESSMENT OF BUILDINGS
The study proposes a non-uniform beam-like model able to reproduce the static and dynamic responses of multistorey buildings. The considered equivalent beam is a step-wise shear-torsional beam and allows to model buildings which do not have uniform stiffness distribution along the height and are …