Compressibility

About: Compressibility is a research topic. Over the lifetime, 18112 publications have been published within this topic receiving 390880 citations. The topic is also known as: coefficient of compressibility & bulk compressibility.

Ball joint prosthesis and method

Abstract: A ball joint prosthesis can include a shell, having an outer articular surface of a first material and an open distal end, configured to receive a sealing receptacle. A volume of a second material, within the shell, can be more compressible than the first material. The ball joint prosthesis can have an effective compressibility that is intermediate between a compressibility of the first material and a compressibility of the second material.

Influence of Magnetic Field on Peristaltic Transport for Eyring- Powell Fluid in A Symmetric Channel During A Porous Medium

Abstract: In this work, the influence of transverse magnetic field on peristaltic transport of an incompressible Eyring–Powell model fluid through porous medium in a symmetric channel is investigated. No slip condition and wall properties have been taken into consideration. The fundamental governing equations; mass conservation and momentum are modelled with respect to wave frame and then simplified with help of assumption long wavelength approximation and low Renold's number. The final resulting non-linear system has been solved for stream function by adopting the regular perturbation technique. The impact of physical significance of various parameters on the stream function, velocity profile, pressure gradient, and wall shear stress is utilized in details via graphs. Keywords : Peristaltic transport, Eyring- Powell fluid, Porous medium, Magnetic field, symmetric channel

The Effect of Variable Thermal Conductivity and The Inclined Magnetic Field on Mhd Plane Poiseuille Flow Past Non-Uniform Plate Temperature

Abstract: The present paper aim significantly investigates the effect of the variable thermal conductivity and the inclined uniform magnetic field on the plane Poiseuille flow of viscous incompressible electrically conducting fluid in the presence of a constant pressure gradient through non-uniform plate temperature are discussed. The lower plate assumed to be porous, in which the fluid sucks from the flow field. The non-linear momentum and energy equations are transformed into ordinary differential equations by means of homotopy perturbation technique and are solved numerically. Numerical results for the dimensionless velocity profile and the temperature profile for different governing parameters such as the Hartmn Number M, angle of inclination of magnetic field (α), Suction parameter (Re), Prandtle Number (Pr), and variable thermal conductivity (ɛ) have been discussed in detail and are displayed with the aid of graphs.

New self-consistent quasistatic approximation for screening and plasma dispersion in the electron gas

Abstract: A new self-consistent quasistatic screening approach is proposed for studying the properties of an interacting electron gas. The compressibility divergence and the ferromagnetic instability found in the static unscreened Hartree-Fock approximation are nonexistent in this scheme. A better fit to the experimental data on the plasma dispersion relation than the existing calculations for free-electron metals is obtained.

Joint effect of heat and mass transfer on the compressible boundary layer stability

Abstract: The study continues the cycle of investigations concerned with the modeling of the methods of controlling flow regimes in compressible boundary layers. The effect of distributed heat and mass transfer on the stability parameters of a supersonic boundary layer is considered at amoderate supersonic Mach number M = 2. Emphasis is placed on the modeling of both the normal injection, when only the V component of the mean velocity is nonzero, and injection in other directions, including the tangential injection, when only the U component is nonzero on the wall. The formulation of the problem is similar with that of the gas curtain influence on the small fluctuation development. It is assumed that the effect of the injection of a similar gas with different temperatures is analogous to the injection of a gas with different densities, namely, the cold gas injection mimics the heavy gas injection, and vice versa. For this reason, in this study this modeling is realized by means of varying the temperature factor (wall heating or cooling). The case, in which the so-called “cutoff” regime is realized, that is, the velocity disturbances on a porous surface can be taken to be zero, is also considered.