Propulsion of Porous Plates in Thin Atmospheres by Temperature Fields
Propulsion of Porous Plates in Thin Atmospheres by Temperature Fields
复制标题
稀薄大气中多孔板的温度场推进
DOI:
10.1007/s12217-014-9357-1
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发表时间:
2014
影响因子:
1.8
通讯作者:
G. Wurm
中科院分区:
文献类型:
--
作者:
M. Kuepper;C. Duermann;C. de Beule;G. Wurm
In low pressure environments macroscopic bodies can be subject to photo- and thermophoretic motion if temperature gradients are present. Porosity can increase the efficiency of this propulsion. We developed a setup to generate a temperature field and measure phoretic accelerations in a parabolic flight. In a first campaign we studied the pressure dependence of the acceleration for thin plates (1.7 mm thickness, 2.2 and 3.5 cm diameter) consisting of sintered glass spheres of a size range of 150 to 250μm and 40 to 70μm. We find evidence for two characteristic propulsion maxima at pressures related to the overall size of the plate as well as the bead (pore) size. The increase of the magnitude of acceleration due to the porosity is on the order of 10−2g for the specific samples. This force is comparable to the phoretic force attributed to the overall size of the plate.
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DOI:
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发表时间:
2013
期刊:
影响因子:
--
作者:
C. de Beule;T. Kelling;G. Wurm;J. Teiser;T. Jankowski
通讯作者:
T. Jankowski
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
O. Krauss;G. Wurm
通讯作者:
G. Wurm
影响因子:
19.6
作者:
de Beule, Caroline;Wurm, Gerhard;Teiser, Jens
通讯作者:
Teiser, Jens
影响因子:
6.5
作者:
Thorsten Meisner;J. Teiser;G. Wurm
通讯作者:
Thorsten Meisner;J. Teiser;G. Wurm
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
Christoph Duermann;G. Wurm;M. Kuepper
通讯作者:
M. Kuepper