The Experts below are selected from a list of 66 Experts worldwide ranked by ideXlab platform

John C Crawshaw - One of the best experts on this subject based on the ideXlab platform.

  • experimental and modeling study of newtonian and non newtonian Fluid flow in pore network micromodels
    Journal of Colloid and Interface Science, 2006
    Co-Authors: Christian L Perrin, Philippe M J Tardy, Kenneth Stuart Sorbie, John C Crawshaw
    Abstract:

    Abstract The in situ rheology of polymeric solutions has been studied experimentally in etched silicon micromodels which are idealizations of porous media. The rectangular channels in these etched networks have dimensions typical of pore sizes in sandstone rocks. Pressure drop/flow rate relations have been measured for water and Non-Newtonian hydrolyzed-polyacrylamide (HPAM) solutions in both individual straight rectangular capillaries and in networks of such capillaries. Results from these experiments have been analyzed using pore-scale network modeling incorporating the Non-Newtonian Fluid Mechanics of a Carreau Fluid. Quantitative agreement is seen between the experiments and the network calculations in the Newtonian and shear-thinning flow regions demonstrating that the ‘shift factor,’ α, can be calculated a priori. Shear-thickening behavior was observed at higher flow rates in the micromodel experiments as a result of elastic effects becoming important and this remains to be incorporated in the network model.

Christian L Perrin - One of the best experts on this subject based on the ideXlab platform.

  • experimental and modeling study of newtonian and non newtonian Fluid flow in pore network micromodels
    Journal of Colloid and Interface Science, 2006
    Co-Authors: Christian L Perrin, Philippe M J Tardy, Kenneth Stuart Sorbie, John C Crawshaw
    Abstract:

    Abstract The in situ rheology of polymeric solutions has been studied experimentally in etched silicon micromodels which are idealizations of porous media. The rectangular channels in these etched networks have dimensions typical of pore sizes in sandstone rocks. Pressure drop/flow rate relations have been measured for water and Non-Newtonian hydrolyzed-polyacrylamide (HPAM) solutions in both individual straight rectangular capillaries and in networks of such capillaries. Results from these experiments have been analyzed using pore-scale network modeling incorporating the Non-Newtonian Fluid Mechanics of a Carreau Fluid. Quantitative agreement is seen between the experiments and the network calculations in the Newtonian and shear-thinning flow regions demonstrating that the ‘shift factor,’ α, can be calculated a priori. Shear-thickening behavior was observed at higher flow rates in the micromodel experiments as a result of elastic effects becoming important and this remains to be incorporated in the network model.

Philippe M J Tardy - One of the best experts on this subject based on the ideXlab platform.

  • experimental and modeling study of newtonian and non newtonian Fluid flow in pore network micromodels
    Journal of Colloid and Interface Science, 2006
    Co-Authors: Christian L Perrin, Philippe M J Tardy, Kenneth Stuart Sorbie, John C Crawshaw
    Abstract:

    Abstract The in situ rheology of polymeric solutions has been studied experimentally in etched silicon micromodels which are idealizations of porous media. The rectangular channels in these etched networks have dimensions typical of pore sizes in sandstone rocks. Pressure drop/flow rate relations have been measured for water and Non-Newtonian hydrolyzed-polyacrylamide (HPAM) solutions in both individual straight rectangular capillaries and in networks of such capillaries. Results from these experiments have been analyzed using pore-scale network modeling incorporating the Non-Newtonian Fluid Mechanics of a Carreau Fluid. Quantitative agreement is seen between the experiments and the network calculations in the Newtonian and shear-thinning flow regions demonstrating that the ‘shift factor,’ α, can be calculated a priori. Shear-thickening behavior was observed at higher flow rates in the micromodel experiments as a result of elastic effects becoming important and this remains to be incorporated in the network model.

Kenneth Stuart Sorbie - One of the best experts on this subject based on the ideXlab platform.

  • experimental and modeling study of newtonian and non newtonian Fluid flow in pore network micromodels
    Journal of Colloid and Interface Science, 2006
    Co-Authors: Christian L Perrin, Philippe M J Tardy, Kenneth Stuart Sorbie, John C Crawshaw
    Abstract:

    Abstract The in situ rheology of polymeric solutions has been studied experimentally in etched silicon micromodels which are idealizations of porous media. The rectangular channels in these etched networks have dimensions typical of pore sizes in sandstone rocks. Pressure drop/flow rate relations have been measured for water and Non-Newtonian hydrolyzed-polyacrylamide (HPAM) solutions in both individual straight rectangular capillaries and in networks of such capillaries. Results from these experiments have been analyzed using pore-scale network modeling incorporating the Non-Newtonian Fluid Mechanics of a Carreau Fluid. Quantitative agreement is seen between the experiments and the network calculations in the Newtonian and shear-thinning flow regions demonstrating that the ‘shift factor,’ α, can be calculated a priori. Shear-thickening behavior was observed at higher flow rates in the micromodel experiments as a result of elastic effects becoming important and this remains to be incorporated in the network model.

G Bohme - One of the best experts on this subject based on the ideXlab platform.

  • non newtonian Fluid Mechanics
    2012
    Co-Authors: G Bohme
    Abstract:

    1. Principles of Continuum Mechanics. Basic Concepts. Material Derivative. Deformation Rates. Rivlin-Ericksen Tensors. Strain Tensor. Kinematics of Steady Shear Flows. Continuity Equation. Stress and Volume Force. Equations of Motion. Energy Equation for Fluid Flow. 2. Material Properties Occurring in Steady Shear Flows. The Flow Function. The Normal Stress Functions. 3. Processes that are Controlled by the Flow Function. Rotational Viscometer. Pressure-Drag Flow in a Straight Channel. Radial Flow between Two Parallel Planes. Pipe Flow. Helical Flow. 4. Effect of Normal Stress Differences. Cone-and-Plate Flow. Weissenberg Effect. Die-Swell. Axial Shear Flow. 5. Simple Unsteady Flows. Linear Viscoelasticity. Non-Linear Effects in Unsteady Pipe Flow. 6. Nearly Viscometric Flows. Shear Flows with a Weak Unsteady Component. Plane Steady Boundary Layer Flows. Stability of Plane Shear Flows. 7. Extensional Flows. Theoretical Principles. Applications. 8. Special Rheological Laws. Fluids Without Memory. Integral Models. Differential Models. Approximation for Slow and Slowly Varying Processes. 9. Secondary Flows. General Theory. Rotational Symmetric Flows. Plane Flows. Steady Flow through Cylindrical Pipes. Periodic Pipe Flow. Appendix: Set of Formulas for Special Curvilinear Coordinates. References. Index.