Results 11 to 20 of about 9,360 (262)
Microrheometer for Biofluidic Analysis: Electronic Detection of the Fluid-Front Advancement
Micromachines, 2021 The motivation for this study was to develop a microdevice for the precise rheological characterization of biofluids, especially blood. The method presented was based on the principles of rheometry and fluid mechanics at the microscale.
Lourdes Méndez-Mora +7 more
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GelsDrilling fluids are essential for maintaining cutting suspension during drilling, exhibiting gel-like behavior at rest and liquid-like behavior under shearing. These fluids display shear-thinning behavior, yield stress, and thixotropy.
Luis H. Quitian-Ardila +6 more
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Natural convection of viscoplastic fluids in side-heated open cavities
Case Studies in Thermal EngineeringThis study considers the natural convection process of viscoplastic fluid in a side-open cavity filled with conductive solid blocks, which are uniformly distributed and form a square lattice.
Paulo R.M. Santos +3 more
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Nihon Reoroji Gakkaishi(Journal of the Society of Rheology, Japan), 1982 The present paper summarizes various problems on non-Newtonian fluid mechanics. Due to complex rheological behaviors of non-Newtonian fluids, constitutive equations have highly nonlinear character. As two approaches to obtain constitutive equations, continuum mechanics and molecular theory are described, and then a number of models are presented ...
openaire +4 more sources
HeliyonThis study investigates the natural convection process within open cavities filled with viscoplastic fluid following the Bingham model with solid square conductive blocks uniformly distributed throughout the cavity.
Paulo R.M. Santos +2 more
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Lattice Boltzmann simulations of unsteady Bingham fluid flows
Applications in Engineering ScienceTransient flows of viscoplastic fluids have very peculiar characteristics. The startup and cessation flows of viscoplastic materials have been subject to many theoretical and numerical investigations. The most challenging aspect of numerical solutions of
Alan Lugarini +2 more
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Chemical Engineering Journal AdvancesDrilling fluids exhibit complex rheological behavior due to a non-linear response to shear rate variations and high sensitivity to changes in temperature, time, and pressure conditions. The prediction of drilling fluid rheological behavior is crucial for
Luis H. Quitian-Ardila +7 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares +3 more
wiley +1 more source
Rheology of waxy oils: A critical review
Applications in Engineering ScienceWaxy oil is a rheologically complex material presenting shear-rate-dependent viscosity, static and dynamic yield stresses, gel elasto-viscoplasticity, time/deformation-dependent gel structure, and irreversibility.
Diogo E.V. Andrade, Cezar O.R. Negrão
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Enhancing Bubble Removal in Geometry‐Optimized Electrodes
Advanced Engineering Materials, EarlyView.3D‐printed lattice electrodes outperform stochastic foams in alkaline water electrolysis despite 20%–25% lower surface area. Straight flow channels generate Venturi‐like bubble entrainment, suppressing gas accumulation that renders foam interiors electrochemically inactive.
Florian Wiesner +5 more
wiley +1 more source