3/29/2017 0 Comments Kirill Sarychev Diet SodaFor the general case, the resulting ordinary differential equations are solved numerically; however, dispersion relations for the growth rate are presented for several limiting cases. An analytical solution is found for the inviscid- inviscid interface and the corresponding dispersion equation for the growth rate is obtained in the limit of large . For the viscous- inviscid case, a dispersion relation is derived in the incompressible limit and . The most pronounced effect of . On the other hand, at small perturbation wavelengths relative to the domain size, the growth rate for the . The results are applied to two practical examples, using sets of parameters relevant to Inertial Confinement Fusion coasting stage and solar corona plumes. The role of viscosity on the growth rate reduction is discussed together with highlighting the range of wavenumbers most affected by viscosity. The viscous effects further increase in the presence of background temperaturegradient, when the viscosity is temperature dependent. UTILITY OF THE WEAK TEMPERATUREGRADIENT APPROXIMATION FOR EARTH- LIKE TIDALLY LOCKED EXOPLANETSSci. Tech Connect. Mills, Sean M.; Abbot, Dorian S. Planets in M dwarf stars' habitable zones are likely to be tidally locked with orbital periods of the order of tens of days. This means that the effects of rotation on atmospheric dynamics will be relatively weak, which requires small horizontal temperaturegradients above the boundary layer of terrestrial atmospheres. An analytically solvable and dynamically consistent model for planetary climate with only three free parameters can be constructed by making the weak temperaturegradient (WTG) approximation, which assumes temperatures are horizontally uniform aloft. The extreme numerical efficiency of a WTG model compared to a three- dimensional general circulation model (GCM) makes it an optimal tool for Monte Carlo fits to observables over parameter space. Additionally, such low- order models are critical for developing physical intuition and coupling atmospheric dynamics to models of other components of planetary climate. The objective of this paper is to determine whether a WTG model provides an adequate approximation of the effect of atmospheric dynamics on quantities likely to be observed over the next decade. To do this, we first tune a WTG model to GCM output for an Earth- like tidally locked planet with a dry, 1 bar atmosphere, then generate and compare the expected phase curves of both models. We find that differences between the two models would be extremely difficult to detect from phase curves using the James Webb Space Telescope. This result demonstrates the usefulness of the WTG approximation when used in conjunction with GCMs as part of a modeling hierarchy to understand the climate of remote planets. Viscous effects on the Rayleigh- Taylor instability with background temperaturegradient. DOE PAGESBeta. Gerashchenko, Sergiy; Livescu, Daniel. Here we studied the growth rate of the compressible Rayleigh- Taylor instability in the presence of a background temperaturegradient, . For the general case, the resulting ordinary differential equations are solved numerically; however, dispersion relations for the growth rate are presented for several limiting cases. For the viscous- inviscid case, a dispersion relation is derived in the incompressible limit and . The most pronounced effect of . On the other hand, at small perturbation wavelengths relative to the domain size, the growth rate for the . The results are applied to two practical examples, using sets of parameters relevant to Inertial Confinement Fusion coasting stage and solar corona plumes. The role of viscosity on the growth rate reduction is discussed together with highlighting the range of wavenumbers most affected by viscosity. The viscous effects further increase in the presence of background temperaturegradient, when the viscosity is temperature dependent. Here we present records of Sr/Ca and . The result is best explained by the northward expansion of cooler subtropical waters due to a weakening of the South Pacific gyre and East Australian Current. Our findings indicate that the GBR experienced substantial meridional temperature change during the last deglaciation, and serve to explain anomalous deglacial drying of northeastern Australia.
Overall, the GBR developed through significant SST change and may be more resilient than previously thought. Intensification of the meridional temperaturegradient in the Great Barrier Reef following the Last Glacial Maximum. Pub. Med. Felis, Thomas; Mc. Gregor, Helen V; Linsley, Braddock K; Tudhope, Alexander W; Gagan, Michael K; Suzuki, Atsushi; Inoue, Mayuri; Thomas, Alexander L; Esat, Tezer M; Thompson, William G; Tiwari, Manish; Potts, Donald C; Mudelsee, Manfred; Yokoyama, Yusuke; Webster, Jody M2. Tropical south- western Pacific temperatures are of vital importance to the Great Barrier Reef (GBR), but the role of sea surface temperatures (SSTs) in the growth of the GBR since the Last Glacial Maximum remains largely unknown. Here we present records of Sr/Ca and . The result is best explained by the northward expansion of cooler subtropical waters due to a weakening of the South Pacific gyre and East Australian Current. Our findings indicate that the GBR experienced substantial meridional temperature change during the last deglaciation, and serve to explain anomalous deglacial drying of northeastern Australia. Overall, the GBR developed through significant SST change and may be more resilient than previously thought. PMID: 2. 49. 37. 32. Zone recrystallization of gallium arsenide with discrete zones in a temperaturegradient. Sci. Tech Connect. Efremova, N. P.; Popov, V. P. 1. 98. 7- 0. 7- 0. A laboratory procedure for zone recrystallization with a temperaturegradient is developed for gallium arsenide, using discrete zones, which permit linear and point zones 2. C. The dependences of the rate of movement of the discrete zones on their thickness and temperatures are determined, which are explained by theories for systems with volatile components. The dislocation density in the recrystallized regions is not higher than in the substrate. Current- voltage characteristics of the p- n junctions, formed on the boundary of the channels with the starting materials, have high parameters. A gallium zone enables purifying the material effectively from tin (by 2- 3 orders of magnitude) and to create structures which have the Gunn effect. Doping with silicon from a linear zone gives rise to the possibility of forming multilayer structures due to poorly defined dependence of the inversion temperature of the conductivity type on the crystal orientation of the growing surface. Intensification of the meridional temperaturegradient in the Great Barrier Reef following the Last Glacial Maximum. Pub. Med Central. Felis, Thomas; Mc. Gregor, Helen V.; Linsley, Braddock K.; Tudhope, Alexander W.; Gagan, Michael K.; Suzuki, Atsushi; Inoue, Mayuri; Thomas, Alexander L.; Esat, Tezer M.; Thompson, William G.; Tiwari, Manish; Potts, Donald C.; Mudelsee, Manfred; Yokoyama, Yusuke; Webster, Jody M. Tropical south- western Pacific temperatures are of vital importance to the Great Barrier Reef (GBR), but the role of sea surface temperatures (SSTs) in the growth of the GBR since the Last Glacial Maximum remains largely unknown. Here we present records of Sr/Ca and . The result is best explained by the northward expansion of cooler subtropical waters due to a weakening of the South Pacific gyre and East Australian Current. Our findings indicate that the GBR experienced substantial meridional temperature change during the last deglaciation, and serve to explain anomalous deglacial drying of northeastern Australia. Overall, the GBR developed through significant SST change and may be more resilient than previously thought. PMID: 2. 49. 37. 32. Computerized optimization of flows and temperaturegradient in flow modulated comprehensive two- dimensional gas chromatography. Pub. Med. M. The separations were performed on a column series consisting of a 2. A dependence of a distribution of individual aromatic hydrocarbons in the 2. D retention plane on the carrier gas flows ((1)Fm, and (2)Fm,) and temperaturegradient (r) was examined in this study. It was found that informational entropy and synentropy percent are advantageous criteria to characterize the distribution of peaks in the 2. D retention plane. Maximum informational entropy and synentropy percents correspond to the maximum distribution of C6- C1. D retention plane gained by the given separation using optimized values of individual carrier gas column volume flows and the temperature rate at the temperature programmed GC. D.; Grek, B.; Hill, K. J.; Taylor, G.; Towner, H. H. 1. 99. 4- 0. 5- 0. Ion temperature profiles of neutral beam heated plasmas in JT- 6. TFTR have been simulated using models of ion thermal diffusivity, . The ion temperature profiles measured by charge exchange recombination spectroscopy are compared to predicted Ti profiles calculated from three theoretical models for ion heat transport by Dominguez and Waltz (1. Lee and Diamond (1. Romanelli (1. 98. With the use of transport models, which were adjusted to fit JT- 6. Dominguez and Waltz and Romanelli models agree with measured Ti, profiles in TFTR L mode discharges in the region a/4 < r < a/2. The observed central peaking of Ti near the magnetic axis of TFTR L mode plasmas cannot be reproduced. It was found that the Lee and Diamond model does not fit me data as well. In the high ion temperature (high Ti) plasmas of JT- 6. Bench (bench only): Kirill Sarychev - 6'5. Download Ambers Closet videos and mp3 music with bharatmovies.online. TFTR, the predicted Ti profiles are much broader than the measured profile. In supershot plasmas, the measured central ion temperature greatly exceeds the predicted temperature, although there is reasonable agreement near the edge. Autoignition: Modes of reaction front propagation evolving from hot spots with defined temperaturegradients. NASA Astrophysics Data System (ADS)Kassoy, David R.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
June 2017
Categories |