Topic
Rarefaction
About: Rarefaction is a research topic. Over the lifetime, 1852 publications have been published within this topic receiving 26943 citations.
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08 Feb 1935
TL;DR: In this article, a method of producing double-wall vessels of porcelain, clay or the like, with rarefaction of the air within the wall spaces was proposed.
Abstract: My invention relates to a method of producing double-wall vessels of ceramic material, such as porcelain, clay or the like, and with rarefaction of the air within the wall spaces. It has already been proposed to produce double-wall vessels of this kind whereby in accordance with the known...
5 citations
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TL;DR: In this article, rarefaction wave interactions of self-similar transonic irrotational flow in gas dynamics for two-dimensional Riemann problems have been analyzed for the first time.
Abstract: We analyze rarefaction wave interactions of self-similar transonic irrotational flow in gas dynamics for two dimensional Riemann problems. We establish the existence result of the supersonic solution to the prototype nonlinear wave system for the sectorial Riemann data, and study the formation of the sonic boundary and the transonic shock. The transition from the sonic boundary to the shock boundary inherits at least two types of degeneracies (1) the system is sonic, and in addition (2) the angular derivative of the solution becomes zero where the sonic and shock boundaries meet.
5 citations
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TL;DR: In this article, the rarefaction effects on thermal conductivity, viscosity, and density of Argon, Neon and Xenon gas flows in a Platinum nanochannel were investigated.
Abstract: This study aimed to investigate the rarefaction effects on thermal conductivity, viscosity, and density of Argon, Neon and Xenon gas flows in a Platinum nanochannel. Green–Kubo approach with Lenard...
5 citations
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TL;DR: In this paper, the authors carried out two-dimensional magnetohydrodynamic (MHD) simulations of an ensemble of Alfvenic fluctuations propagating in a structured, expanding solar wind including the presence of fast and slow solar wind streams.
Abstract: We carry out two-dimensional magnetohydrodynamic (MHD) simulations of an ensemble of Alfvenic fluctuations propagating in a structured, expanding solar wind including the presence of fast and slow solar wind streams. Using an appropriate expanding box model, the simulations incorporate the effects of fast-slow stream shear and compression and rarefaction self-consistently. We investigate the radial and longitudinal evolution of the cross-helicity, the total and residual energies and the power spectra of outward and inward Alfvenic fluctuations. The stream interaction is found to strongly affect the radial evolution of Alfvenic turbulence. The total energy in the Alfven waves is depleted within the velocity shear regions, accompanied by the decrease of the normalized cross-helicity. The presence of stream-compression facilitates this process. Residual energy fluctuates around zero due to the correlation and de-correlation between the inward/outward waves but no net growth or decrease of the residual energy is observed. The radial power spectra of the inward/outward Alfven waves show significant longitudinal variations. Kolmogorov-like spectra are developed only inside the fast and slow streams and when both the compression and shear are present. On the other hand, the spectra along the longitudinal direction show clear Kolmogorov-like inertial ranges in all cases.
5 citations