A non-Newtonian mathematical model of blood described as a Hershel-Bulkley fluid flowing in stenosed artery with the effect chemical reaction is mathematically studied. The expressions shear stress, mean velocity and absolute plug non-plug flow field are evaluated analytically. convective-diffusion equation solved using Taylor-Aris technique subject to relevant boundary constraint determining c...

• Without slip at the wall, alternate vortex shedding occurs behind cylinder With double cylinder. Good correlation between numerical predictions and experimental results. Vortex frequency decreases as yield stress increases or inertia Viscoelastic effects are slight. Two-dimensional unsteady inertial flows of a fluid around were studied experimentally. Carbopol aqueous gels, well-known model f...

The extrusion processes of ceramic pastes, including 3D printing, are used for the production high-value products. Ceramic paste is a complex process which depends on rheological properties, die and extruder geometries, operational parameters. Modeling quantitative analysis molding important to design proper extrudates desired strength, shape, morphology. In this paper, mathematical model ram m...

Different approaches to model the cleaning of (i) very thin and (ii) soil layers by impinging water jets are compared evaluate their predictive capabilities. Cleaning experiments were performed with coherent 2 mm 3 diameter (Re > 10,000) on flat an insoluble, viscoplastic petroleum jelly. The jelly exhibited creep below yield stress Herschel-Bulkley behaviour above it. A two-film shear-driven f...

In redox flow batteries (RFBs), semi-solid cells incorporate solid particles in the same medium than electrolyte form of slurry to increase energy efficiency. However, rheological properties fluid hosting need favor particle stability and pumping process within RFB. this study, materials used formulate a gelled polymer (GPE), which will be as suspending for dense zinc microparticles slurry-air ...

The Herschel-Bulkley law, a universal constitutive relation, has been empirically known to be applicable vast range of soft materials, including sheared glasses. Although the Herschel- Bulkley law attracted public attention, its structural origin remained an open question. In this letter, by means atomistic simulation binary Lennard-Jones glasses, we report that instantaneous normal modes with ...

The effects of magnetic field on capillary-tissue exchange system where the rheology of flowing blood in the capillary is characterized by the modified Herschel-Bulkley fluid. Blood is the suspension of cells in plasma blood can be regarded as a suspension of magnetic particles (red cells) in non-magnetic plasma. An axially non-symmetric but radially symmetric stenosis is considered when an ext...

Este estudio determinó el efecto de la adición fibra y temperatura en comportamiento del flujo zumo maracuyá. Las mediciones reológicas se realizaron con un esfuerzo cortante controlado los experimentos cizallamiento estado estacionario intervalo razón corte (γ) 0.01 – 100 s-1. Se fluido utilizando ecuación Herschel-Bulkley. Los resultados mostraron que mezcla maracuyá sin (0%) 6.25 y12.5%, pse...

The effect of NiO nanoparticles on the rheological and volumetric properties of dilute solutions of starch-NaOH-H2O, PEG400-PEG2000 and PEG400-PEG6000 were investigated. Achieve this aim requires to prepare the stable nanofluids. Therefore, nanoparticles of NiO were added to these solutions and dispersed by a shaker and an ultrasonic bath for making the homogeneous nanofluids. The UV-Vis spectr...

Abstract Accurate pressure drop estimation is important for drill string and bit nozzles design optimized fluid circulations as well identifying the drilling problems such nozzle(s) washout or plugging. In this study, Bingham Plastic model has been modified by applying a coefficient to its turbulent loss calculations. This encompasses effects of pipe tool joints other in losses. The range was d...