منابع مشابه
Coupling of Confined Superfluid Helium
Early measurements of the specific heat of liquid helium confined in all three spatial dimensions suggest a coupling of individual regions of superfluid via connecting channels. Preliminary measurements have been made to investigate this apparent coupling. Although more data need to be collected before anything conclusive can be said, the available data support the idea that behavior of helium ...
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The paper discusses the effort carried out at VNIIEF to consider the applicability of unstructured Lagrange meshes to multidimensional continuum mechanics problems with high shear strain and vortex flows. Three finite-difference numerical techniques for solving continuum mechanics problems on polyhedral unstructured Lagrange meshes are described. Examples of numerical calculations of benchmark ...
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The Lagrange-mesh method is an approximate variational method taking the form of equations on a grid because of the use of a Gauss quadrature approximation. With a basis of Lagrange functions involving associated Laguerre polynomials related to the Gauss quadrature, the method is applied to the Dirac equation. The potential may possess a 1/r singularity. For hydrogenic atoms, numerically exact ...
متن کاملWeak Coupling of Superfluid Helium Confined to Zero Dimensions
Measurements of the specific heat of liquid helium confined in all three spatial dimensions shows an anomalous behavior that suggests a coupling of individual regions of superfluid. This coupling is thought to occur through the shallow channels used to fill the boxes used as confinement structures. This may be evidence of a proximity effect where helium in the larger boxes modifies the behavior...
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We propose an all regime Lagrange-Projection like numerical scheme for the gas dynamics equations. By all regime, we mean that the numerical scheme is able to compute accurate approximate solutions with an under-resolved discretization, i.e. a mesh size and time step much bigger than the Mach number M . The key idea is to decouple acoustic and transport phenomenon and then alter the numerical f...
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ژورنال
عنوان ژورنال: Physical Chemistry Chemical Physics
سال: 2015
ISSN: 1463-9076,1463-9084
DOI: 10.1039/c5cp00110b