Porous media flow problems: natural convection and one-dimensional flow of a non-Newtonian fluid
Two fluid problems in porous media are studied: natural convection of a Newtonian fluid and one-dimensional flow of a non-Newtonian fluid. Convection in a rectangular porous cavity driven by heating in the horizontal is analyzed by a number of different techniques which yield a fairly complete description of the 2-dimensional solutions. The solutions are governed by 2 dimensionless parameters: the Darcy-Rayleigh number R and cavity aspect ratio A. The flow behavior of a dilute solution of polyacrylamide in corn syrup flowing through porous media also is studied. Measurements of the pressure drop and flow rate are made for the solution flowing through a packed bed of glass beads. At low velocities the pressure drop as a function of velocity is the same as that for a Newtonian fluid of equal viscosity. At higher flow rates the non-Newtonian fluid exhibited significantly higher pressure drops than a Newtonian fluid.
- OSTI ID:
- 5691857
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
CONVECTION
ENERGY TRANSFER
FLOW MODELS
FLOW RATE
FLUID FLOW
HEAT TRANSFER
MASS TRANSFER
MATERIALS
MATHEMATICAL MODELS
NATURAL CONVECTION
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYAMIDES
POLYMERS
POROUS MATERIALS
PRESSURE DROP
RHEOLOGY
VISCOSITY