2,933 research outputs found
Heat Transfer Characteristics of Regenerator Matrix (Case of Packed Wire Gauzes)
The average heat transfer coefficient in the matrix of laminated wire screens (10 to 250 mesh) for a Stirling engine heat exchanger was studied experimentally. The data are correlated by N sub ud = 0.42 R sub ed 0.56 (3 or = R sub ed or = 400), and R sub ed are the Nusselt and Reynolds nubmers based on the wire diameter. The pressure drop decreased and the heat transfer increased as the wire diameter was decreased
Determining the Mass for a Light Gravitino
Gauge mediated supersymmetry breaking scenarios with an ultra-light gravitino
of mass m_{3/2}=1-10 eV are very interesting, since there is no cosmological
gravitino problem. We propose a new experimental determination of the gravitino
mass for such an ultra-light gravitino, by measuring a branching ratio of two
decay modes of sleptons.Comment: 9 pages, 12 figure
Numerical Studies on Heat Transport Characteristics of He II in a Channel with a Porous Spacer
Transport Coefficients of the Yukawa One Component Plasma
We present equilibrium molecular-dynamics computations of the thermal
conductivity and the two viscosities of the Yukawa one-component plasma. The
simulations were performed within periodic boundary conditions and Ewald sums
were implemented for the potentials, the forces, and for all the currents which
enter the Kubo formulas. For large values of the screening parameter, our
estimates of the shear viscosity and the thermal conductivity are in good
agreement with the predictions of the Chapman-Enskog theory.Comment: 11 pages, 2 figure
Numerical Analysis on He II Heat Transport in the Long Channel with Abrupt Change of Cross-sectional Area
Monte Carlo simulations of the screening potential of the Yukawa one-component plasma
A Monte Carlo scheme to sample the screening potential H(r) of Yukawa plasmas
notably at short distances is presented. This scheme is based on an importance
sampling technique. Comparisons with former results for the Coulombic
one-component plasma are given. Our Monte Carlo simulations yield an accurate
estimate of H(r) as well for short range and long range interparticle
distances.Comment: to be published in Journal of Physics A: Mathematical and Genera
Социокультурные взаимодействия в семье, ожидающей ребенка : социологический анализ : автореф. дис. … канд. социол. наук : 22.00.04
H. Ohta and S. Hamaguchi, Phys. Rev. Lett. 84, 6026, 200
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