Results 1  10
of
1,686
Fluid Helicity and Dynamo Bifurcations
 Phys. Lett. A
"... The bifurcation behaviour of the 3D magnetohydrodynamic equations has been studied for external forcings of varying degree of helicity. With increasing strength of the forcing a primary nonmagnetic steady state loses stability to a magnetic periodic state if the helicity exceeds a threshold value a ..."
Abstract

Cited by 1 (1 self)
 Add to MetaCart
The bifurcation behaviour of the 3D magnetohydrodynamic equations has been studied for external forcings of varying degree of helicity. With increasing strength of the forcing a primary nonmagnetic steady state loses stability to a magnetic periodic state if the helicity exceeds a threshold value
Fluid helicity and dynamo effect
"... Using the incompressible magnetohydrodynamic equations, we have numerically studied the dynamo effect in electrically conducting fluids. The necessary energy input into the system was modeled either by an explicit forcing term in the NavierStokes equation or fully selfconsistently by thermal convec ..."
Abstract
 Add to MetaCart
Using the incompressible magnetohydrodynamic equations, we have numerically studied the dynamo effect in electrically conducting fluids. The necessary energy input into the system was modeled either by an explicit forcing term in the NavierStokes equation or fully selfconsistently by thermal
Seismic properties of pore fluids.
, 1992
"... ABSTRACT Pore fluids strongly influence the seismic properties of rocks. The densities, bulk moduli, velocities, and viscosities of common pore fluids are usually oversimplified in geophysics. We use a combination of thermodynamic relationships, empirical trends, and new and published data to exami ..."
Abstract

Cited by 99 (0 self)
 Add to MetaCart
expressions are developed to facilitate the use of realistic fluid properties in rock models. Pore fluids have properties that vary substantially, but systematically, with composition, pressure, and temperature. Gas and oil density and modulus, as well as oil viscosity, increase with molecular weight
1 Galactic and Accretion Disk Dynamos
, 1998
"... Dynamos in astrophysical disks are usually explained in terms of the standard alphaomega mean field dynamo model where the local helicity generates a radial field component from an azimuthal field. The subsequent shearing of the radial field gives rise to exponentially growing dynamo modes. There a ..."
Abstract
 Add to MetaCart
, these difficulties can be overcome by including a fluctuating helicity driven by hydrodynamic or magnetic instabilities. Unlike traditional disk dynamo models, this ‘incoherent ’ dynamo does not depend on the presence of systematic fluid helicity or any kind of vertical symmetry breaking. It will depend on geometry
HelicityCorrelated Systematics for SLAC Experiment E158
, 2001
"... Experiment E158 at SLAC will make the rst measurement of parity violation in Mller scattering. The leftright crosssection asymmetry in the elastic scattering of a 45 GeV polarized electron beam with unpolarized electrons in a liquid hydrogen target will be measured to an accuracy of better than 10 ..."
Abstract
 Add to MetaCart
10 8, with the expected Standard Model asymmetry being approximately 10 7. Because helicitycorrelated (leftright) charge and position asymmetries in the electron beam can give rise to systematic errors in the measurement, great care must be given to beam monitoring and control. We have developed
Exact Solution of Some Helical Flows of Newtonian Fluids
"... Abstract—This paper deals with the helical flow of a Newtonian fluid in an infinite circular cylinder, due to both longitudinal and rotational shear stress. The velocity field and the resulting shear stress are determined by means of the Laplace and finite Hankel transforms and satisfy all imposed i ..."
Abstract
 Add to MetaCart
Abstract—This paper deals with the helical flow of a Newtonian fluid in an infinite circular cylinder, due to both longitudinal and rotational shear stress. The velocity field and the resulting shear stress are determined by means of the Laplace and finite Hankel transforms and satisfy all imposed
Analysis of thirdgrade fluid in helical screw rheometer
 Article ID 620238
"... The steady flow of an incompressible, thirdgrade fluid in helical screw rheometer (HSR) is studied by "unwrapping or flattening" the channel, lands, and the outside rotating barrel. The geometry is approximated as a shallow infinite channel, by assuming that the width of the channel is l ..."
Abstract

Cited by 1 (1 self)
 Add to MetaCart
The steady flow of an incompressible, thirdgrade fluid in helical screw rheometer (HSR) is studied by "unwrapping or flattening" the channel, lands, and the outside rotating barrel. The geometry is approximated as a shallow infinite channel, by assuming that the width of the channel
On the Inverse Cascade of Magnetic Helicity
 ApJ
, 2006
"... We study the inverse cascade of magnetic helicity in conducting fluids, as pertinent to the generation and dynamics of magnetic fields as observed, e.g., in the solar corona, by investigating the detailed transfer of helicity between different spherical shells in Fourier space in direct numerical si ..."
Abstract

Cited by 5 (2 self)
 Add to MetaCart
We study the inverse cascade of magnetic helicity in conducting fluids, as pertinent to the generation and dynamics of magnetic fields as observed, e.g., in the solar corona, by investigating the detailed transfer of helicity between different spherical shells in Fourier space in direct numerical
Results 1  10
of
1,686