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Showing 1 to 11 of 11 for “"Nonlinear Flow"”.
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Time dependence of nonlinear flow dynamics of near hard sphere suspensions
… the viscous behavior dominates, the onset of nonlinearities is driven by increases in rate of strain. At higher deformation frequency, where suspension mechanics is dominated by an elastic response, the nonlinear responses occur when deformation exceeds a characteristic strain. This strain is …
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Model for the onset of nonlinear flow dissipation in 2D superfluid helium films
A model for the onset of nonlinear dissipation in AC and DC flows is presented as an extension of the linear theory of Ambegaokar, Halperin, Nelson, and Siggia to include to flow velocity. The renormalization group calculation is carried out on a computer to determine the dissipation as a function …
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Understanding self-assembly and flow heterogeneities in poloxamer wormlike micelles
… Additionally, entangled WLMs exhibit unique nonlinear flow behavior such as the formation of shear bands and other flow heterogeneities, which have garnered considerable scientific interest. While often formulated using small molecule ionic surfactants, WLMs can also form in solutions of …
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Geometric methods for optimizing ramified flow networks
… based approaches, optimal characteristics of nonlinear flow networks were examined. The first model studied was that of a fractal-like desalination plant. Solving the equations of diffusion by analogy to electrostatics, desalination graphs superimposed on the diffusion gradients were optimized …
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Frequency Domain Methods for Predicting the Transport of Non-Uniform Flow Through Turbomachinery Compressors
… total pressure distributions through an axial flow compressor is presented. The method relies on frequency-domain transformations of total pressure distortion patterns, and the use of digital filter techniques to capture the effect of a blade row on the total pressure distortion. Compressor …
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Efficient algorithms for flow models coupled with geomechanics for porous media applications
The coupling between subsurface flow and reservoir geomechanics plays a critical role in obtaining accurate results for models involving reservoir deformation, surface subsidence, well stability, sand production, waste deposition, hydraulic fracturing, CO₂ sequestration, and hydrocarbon recovery. …
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Modeling of Real Gas Flow Behavior in Porous Media
Due to the highly nonlinear variation of gas density and viscosity with respect to pressure, no analytical solution to the real gas diffusivity equation has ever been presented in the literature. Analytical solutions used in gas well testing and pressure analysis are based on idealized assumptions, …
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Finite element analysis of nitrogen species transport and transformation in the unsaturated zone
… element model was developed to predict water flow and nitrogen species transport and transformation in variably saturated soil. In the finite element analysis various numerical algorithms were examined to evaluate methods of improving the efficiency of the traditional finite element approach. …
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Fully nonlinear interfacial waves in a bounded two-fluid system
We study the nonlinear flow which results when two immiscible inviscid incompressible fluids of different densities and separated by an interface which is free to move and which supports surface tension, are caused to flow in a straight infinite channel. Gravity is taken into consideration and the …
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Simulation of concentrated non-Brownian frictional and adhesive suspensions in linear and nonlinear flows
… simulation method for non-Brownian suspension flows at low Reynolds number, based on the Fictitious Domain Method and supplemented by sub-grid lubrication corrections. In their usual form, sub-grid corrections involve the underlying linear flow. In the present work, the conditions required to …
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Nonlinear fluid dynamics in complex geometries
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms