flow over a porous body
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flow over a porous body a singular perturbation problem with two parameters by K. Gersten

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Published by Rand in Santa Monica [Calif.] .
Written in English

Subjects:

  • Aerodynamic heating,
  • Boundary layer,
  • Ablation (Aerothermodynamics),
  • Cooling

Book details:

Edition Notes

Statement[by] K. Gersten and J. F. Gross.
ContributionsGross, Joseph Francis, 1932- joint author.
Classifications
LC ClassificationsAS36 .R3 R-980, TL574.A45 .R3 R-980
The Physical Object
Paginationxi, 38 p.
Number of Pages38
ID Numbers
Open LibraryOL5237128M
LC Control Number75307953

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Marcelo J.S. de Lemos, in Turbulence in Porous Media (Second Edition), Introduction. When analyzing turbulent flow in porous media, there are many situations of practical relevance in which the porous substrate moves along with the flow, usually with a different velocity than that of the working fluid. Several manufacturing processes deal with such configuration and applied. Analysis of flow in porous media, based on the Darcy law, thus moves to the macroscopic level, at which only average phenomena over the control volume are considered. The property defined at a point in the mathematical models therefore represents an average property over a CV and, thus, the property at every point in space varies smoothly such. The book gives brief overviews of topics like thermodynamics, capillarity and fluid mechanics in order to launch the reader smoothly into the realm of porous media. In-depth discussions are given of phase change phenomena in porous media, single phase flow, unsaturated flow and multiphase flow. In order to make the topics concrete the book. This article addresses the steady, incompressible flow past a two‐dimensional or an axisymmetric body with suction through porous strips. Closed‐form solutions for each flow quantity are developed in the context of linearized triple‐deck theory using Fourier transforms. To demonstrate the validity of these closed‐form solutions, we compare the wall shear stress and pressure.

Non-Darcy flow is turbulent flow in porous media, which occurs at high flow rates, for example in natural gas wells and geothermal was examined in detail by Wattenbarger and Ramey () to determine its importance for gas wells. Non-Darcy flow effects have the appearance of positive skin but are flow rate dependent (Ramey, ).Total skin factor will be comprised of a constant.   We consider the laminar viscous channel flow over a porous surface. The size of the pores is much smaller than the size of the channel, and it is important to determine the effective boundary conditions at the porous surface. A new attempt for the solution of fluid flow over porous walls was performed in [3]. Both the fluid flow above the wall and the fluid flow inside the porous body were treated separately, with the slip velocity as an arbitrary quantity, not known beforehand. Formal solutions obtained in this way are then matched by equating the shear stresses on the. Interest in studying the phenomena of convective heat and mass transfer between an ambient fluid and a body which is immersed in it stems both from fundamental considerations, such as the development of better insights into the nature of the underlying physical processes which take place, and from practical considerations, such as the fact that these idealised configurations serve as a.

Silva, R. A. and de Lemos, M. J. S. a Numerical analysis of the stress jump interface condition for laminar flow over a porous layer. Numer. Heat Transfer A 43, [] CrossRef Google Scholar.   Different flow regimes can be visualized, such as through flow, overflow, and transition flow depending upon filling materials, hydraulic conductivity, and geometry of gabions permeable weirs, as shown in Fig. 1 [].The non-overflow (through flow) regime occurs when the water flows only through the porous weir and the free surface disappears from the upper edge of the weir crest. Electrokinetic phenomena are a family of several different effects that occur in heterogeneous fluids, or in porous bodies filled with fluid, or in a fast flow over a flat term heterogeneous here means a fluid containing particles. Particles can be solid, liquid or gas bubbles with sizes on the scale of a micrometer or is a common source of all these effects—the. @article{osti_, title = {Flow of fluids through porous materials}, author = {Collins, R E}, abstractNote = {This book is a simple text on fundamentals of flow through porous materials and is aimed at the growing demand for improved technology in secondary and tertiary recovery of petroleum. The material is divided into 10 chapters entitled: Structure and Properties of Porous Materials.