Darcy Convection Anisotropic Problem with Multi Stability of Stationary Motions for Rectangle
Journal Title: Global Journal of Engineering Sciences - Year 2019, Vol 2, Issue 4
Abstract
Based on the Darcy model, fluid convection in a porous rectangle is analyzed taking into account anisotropy of thermal characteristics and permeability. Relations between parameters for which the problem belongs to the class of co-sssymmetric systems are derived. For this case explicit formulas for the critical numbers of the loss of stability of mechanical equilibrium are found. Using a finite-difference method that preserves the cosymmetry of the problem, family of stationary convective regimes is computed. Through the computational experiment the destruction of families is demonstrated in the case of violation of the conditions of co-symmetry. As result the appearance of a finite number of stationary regimes are obtained.
Authors and Affiliations
Mostafa Abdallah Ahmed
Activation of Motor Fuels
The device described activator of motor fuels by the patent RF No. 2411074, which is facilitated by the fractional composition of gasoline, aviation and diesels fuel, rapeseed oil, as well as modification of them hydroca...
A Cost Analysis for Urban Transformation Applications
Urban transformation is a method that is used for renewal of natural disaster and earthquake risks at high levels, has not completed its social development, and has a population density exceeding the capacity. The econom...
A Finite Element Study of The Elastic Properties of a Cracked Cellular Structure with Trapezoidal Beams
The elastic properties of a cracked cellular structure of close-to-zero Poisson’s ratio with trapezoidal beams are studied by the finite element method in this paper. The effects of the crack length and crack angle on th...
Finite Element Analysis and Calculation of Normal Section Bearing Capacity of Steel Tube Bundle Composite Shear Wall
To be a new type of building component, composite shear wall with steel tubes bundle has been widely used in the steel structure housing system as the development of prefabricated construction. In this paper, ABAQUS has...
Influence of Different Counting Parameters for the Measurement of Thyroid and Thyroid Related Hormones Using Radio Immuno Assay (RIA) Technique and 125I Isotopes
Different methods for the determination of thyroid and related hormone have been reviewed. Performance characteristics of the radio isotopic method for the hormone assay were identified. Bound T3, Bound T4, TSH and Free...