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Heating of the solar transition zone and corona
Solar Physics, 1976Theoretical temperature, velocity and density profiles for the area above an optical depth τ = 10−8 in the Sun were computed. An approximation for the coefficient of thermal conductivity was used; dissipation of shock wave energy as well as that of sound wave energy was taken into account and the height of shock formation was determined by a condition ...
D. Vanbeveren, C. De Loore
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Zoning Steam-Heated Reservoirs by Heat-Transfer Mechanisms
SPE Nigeria Annual International Conference and Exhibition, 2016Abstract In-situ oil recovery by thermal methods entails introducing heat into the reservoir to enhance productivity and ultimate recovery. Clearly, proper design and management of thermal floods require adequate insights into the temperature distribution in the reservoir.
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On Turbulent Heat Transport in Rotating Convective Zones
Astronomische Nachrichten, 1982AbstractThis paper analyses the tensorial aspect of heat conduction which certainly becomes important for gravitationally stratified and rotating turbulent media. The structure of the eddy conductivity tensor is indeed a non‐trivial one for turbulences with correlation times not too short in comparison with the rotation period. Since this situation may
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Ion beam heating in the auroral zone
Journal of Geophysical Research: Space Physics, 1990Recent satellite observations at high altitudes (> 5000 km) in the auroral zone have shown the existence of hybrid or bimodal ion beam distributions that are evidence of both parallel and perpendicular ion acceleration. Acceleration parallel to the magnetic field is most likely due to quasi‐static electric fields (double layers) which can create ...
David Schriver +3 more
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Heat affected zone COD testing
Theoretical and Applied Fracture Mechanics, 1986Abstract The paper focusses on additional COD test validity criteria which are seen as necessary to ensure the accurate assessment of heat affected zone toughness. Theoretical considerations indicate that it is necessary for the COD notch to intersect the heat affected zone for at least 8% of the specimen thickness in order to ensure accurate ...
G. Kohler, R. Whitfield, C. Chipperfield
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Sudden Heating of the Ionosphere in the Auroral Zone
Nature, 1964SODIUM clouds were released from Nike-Apache rockets launched from Fort Churchill, Manitoba (geomagnetic latitude 68.5° N.), on the evenings of May 21 and 22, 1963.
Blamont, Jacques-Emile, Lory, Marie-Lise
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Heat-Affected Zones in Grinding Steel
CIRP Annals, 1994Summary Two well known forms of metallurgical damage of ground surfaces involve untempered and overtempered martensite. Both of these forms of metallurgical damage involve martensitic transformations. This paper reviews the nature of such transformations and the special characteristics that pertain in grinding where the time at temperature before ...
M.C. Shaw, A. Vyas
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Heat zoning- and district heating simulation tool
Building Simulation Conference Proceedings, 2021Raf De Herdt +3 more
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Heat flow in the Kenya rift zone
Tectonophysics, 1994Abstract An understanding of the processes of continental rifting is fundamental to understanding the evolution of the continents. Considerable evidence exists to suggest that continental rift zones are associated with high heat flow and elevated lithospheric geotherms, but direct heat-flow measurements from young rifts do not clearly define surface ...
J. Wheildon +4 more
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The transition zone on a heated axisymmetric body
2000It is well known from linear stability theory that heating a surface immersed in water flow tends to stabilize the boundary layer on the surface, suggesting that there will be a corresponding delay in transition. Experiments on an axisymmetric body carried out by Lauchle & Gurney confirm the suggestion; but based on the identification of the point ...
Rama Govindarajan, R. Narasimha
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