Results 11 to 20 of about 823 (174)
On the axisymmetry of annular jet instabilities [PDF]
Journal of Fluid Mechanics, 2003 We implement a linear stability analysis for the viscous annular jet surrounded by inviscid motionless gas subject to three-dimensional disturbances, and an analytical dispersion relation is presented. With this relation, we are able to obtain evidence that the axisymmetric mode is the most unstable mode of the system. The evidence for general cases is
Chen, Falin +3 more
openaire +3 more sources
Critical collapse of the massless scalar field in axisymmetry [PDF]
Physical Review D, 2003 We present results from a numerical study of critical gravitational collapse of axisymmetric distributions of massless scalar field energy. We find threshold behavior that can be described by the spherically symmetric critical solution with axisymmetric perturbations.
Choptuik, Matthew W. +3 more
openaire +4 more sources
A Statistical Shape Modeling Approach for the Derivation of a Data-Driven Geometry-Aware Lumped Arterial Stenosis Model. [PDF]
Int J Numer Method Biomed EngA data‐driven workflow for constructing a geometry‐aware lumped arterial stenosis model: Statistical shape modeling extracts geometry‐specific shape modes from synthetically generated coronary lesion geometries. Large‐scale 3D CFD simulations over varying Reynolds numbers yield the geometries their viscous (Kv) and inertial (Kt) loss coefficients. Then,
Hilhorst PLJ +6 more
europepmc +2 more sources
Critical collapse of scalar fields beyond axisymmetry [PDF]
General Relativity and Gravitation, 2014 We investigate non-spherically symmetric, scalar field collapse of a family of initial data consisting of a spherically symmetric profile with a deformation proportional to the real part of the spherical harmonic $Y_{21}(θ,φ)$. Independent of the strength of the anisotropy in the data, we find that supercritical collapse yields a black hole mass ...
Healy, James, Laguna, Pablo
openaire +2 more sources
Sensors, 2008 In this paper the static pressure field of an annular swirling jet is measured indirectly using stereo-PIV measurements. The pressure field is obtained from numerically solving the Poisson equation, taken into account the axisymmetry of the flow.
Eric Van den Bulck, Maarten Vanierschot
doaj +1 more source
A Novel Decomposition-Based Growth Model for Simulating Stress-Modulated Spinal Growth. [PDF]
Int J Numer Method Biomed EngThis study introduces the first decomposition‐based finite‐strain growth model for a simplified Functional Spinal Unit, where growth occurs simultaneously with mechanical loading. The approach eliminates the major physical inconsistency of sequential methods—growth in an artificial stress‐free configuration—while preventing mesh distortion and ...
Çakmak SO, Gürses E.
europepmc +2 more sources
Probing Non-Axisymmetry with Proper Motions [PDF]
Symposium - International Astronomical Union, 1995 The potential of the Milky Way is almost certainly not axisymmetric: the centre is believed to be dominated by a bar, and beyond the solar radius some non-axisymmetric feature of the potential appears to warp the disk. There are grounds for believing that the outer potential is mildly elliptical. Sub mas yr–1 proper motions of objects that lie near the
openaire +2 more sources
Classification of planetary nebulae by their departure from axisymmetry [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 10 pages + 1 table.
Soker, Noam, Hadar, Ron
openaire +2 more sources
International Journal of Mathematics and Mathematical Sciences, 2005 An infinite number of generalized solutions to the stationary Euler equations with axisymmetry and prescribed circulation are constructed by applying the finite difference method for spatial variables to an equation of pseudo-advected vorticity. They are
Takahiro Nishiyama
doaj +1 more source
Regular and Black Hole Skyrmions with Axisymmetry
General Relativity and Gravitation, 2004 It has been known that a B=2 skyrmion is axially symmetric. We consider the Skyrme model coupled to gravity and obtain static axially symmetric regular and black hole solutions numerically. Computing the energy density of the skyrmion, we discuss the effect of gravity to the energy density and baryon density of the skyrmion.
Sawado, Nobuyuki +3 more
openaire +3 more sources