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Linear methods of summation of Fourier- Laplace series

作者:科技文献资料网 时间:2017-07-26 12:38:34  浏览:8921   来源:科技文献资料网
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[唯一标识符]:CDSITC.AEROSPACE.A66-16229
[文献来源]:美国航空航天数据库(aerospace);国际航宇文摘(IAA)
[资源原始索取号]:A66-16229
[标题]:Linear methods of summation of Fourier- Laplace series
[文摘]:(Linear methods of summation of Fourier-Laplace series)
[出版时间]:196510
[出版年份]:1966
[馆藏索取号]:A66-16229


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[唯一标识符]:CDSITC.AEROSPACE.A84-11553
[文献来源]:美国航空航天数据库(aerospace);国际航宇文摘(IAA)
[资源原始索取号]:A84-11553
[标题]:Metabolism of certain trace elements and the prophylaxis of their deficit in athletes
[出版时间]:198305
[出版年份]:1984
[馆藏索取号]:A84-11553


[唯一标识符]:CDSITC.AEROSPACE.A99-16703
[文献来源]:美国航空航天数据库(aerospace);美国航空航天学会会议(AIAA)
[资源原始索取号]:A1999-16703; Reference AN: A99-16703
[标题]:Modeling the effects of weak ionization on supersonic flow and shock waves
[作者]:Poggie Jonathan
[来源]:AIAA-Aerospace-Sciences-Meeting-and-Exhibit-37th-Reno-NV-Jan. 11-14-1999
[文摘]:Preliminary results are presented on the use of electromagnetic energy addition for hypersonic flow control. Several well-known analytical solutions of the equations of gasdynamics and magnetogasdynamics were used to study the relative importance of exothermic reactions, axial temperature variation, and an imposed magnetic field in glow discharge tube experiments. Of the three effects addressed, thermal nonuniformity appears to have the most influence on the experimental results. A detonation model can probably be ruled out for two reasons. First, insufficient energy is available from electron-ion recombination reactions to drive the detonation. Second, the detonation model predicts an increase in shock density ratio with increasing heat release, in contrast to the apparent drop seen in the experiments. In a similar manner, an ideal magnetohydrodynamic shock model can probably be ruled out for lack of adequate electrical conductivity and of a sufficiently strong imposed magnetic field. This conclusion does not, however, exclude other electromagnetic phenomena. A combination of careful temperature measurements and numerical simulations is required to determine whether thermal effects or physics inherent to the plasma are dominant in these experiments. It is evident, however, that all three of the mechanisms examined show promise for use in hypersonic flow control. (Author)
[关键词]:IONIZATION ; SUPERSONIC FLOW; SHOCK WAVES; FLOW CONTROL; MAGNETOHYDRODYNAMICS ; EXOTHERMIC REACTIONS; MACH NUMBER; MAGNETIC FIELDS
[出版年份]:1999
[专业领域]:THERMODYNAMICS AND STATISTICAL PHYSICS
[馆藏索取号]:A9916703
[总页数]:11



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