Heat transfer and convection currents
Heat transfer and convection currents
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传热和对流
DOI：
10.1098/rsta.1965.0038
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发表时间：
1965
期刊：
影响因子：
--
通讯作者：
S. M. P. Siu
中科院分区：
文献类型：
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作者：
S. M. P. Siu
(路德维希·玻尔兹曼-沃勒松根1895)研究了地幔对流的可能原因，得出的结论是，辐射加热和热传导最有可能为地球历史这个阶段存在的任何对流提供驱动力。半定量地讨论了具有内生热的介质中的对流理论。结论是，基于不可压缩流体中边缘稳定性计算的地幔对流模式是对实际情况的过度简单化。一种更现实的理论表明，热对流可能仅限于地幔，是一种不稳定的流动。有证据表明，它将具有某种特征，可以解释洋脊和一些造山带所呈现的模式的狭窄和线性。
‘Es gibt nichts praktischeres als die Theorie ’ (ludwig boltzmann—Vorlesungen 1895) The possible causes of convection in the Earth’s mantle are examined, and it is concluded that radiogenic heating together with thermal conduction is most likely to provide the driving force for any convection present at this stage of the Earth’s history. The theory of convection in a medium with internal heat generation is discussed semi-quantitatively. It is concluded that a mantle convection pattern based on calculations of marginal stability in an incompressible fluid is a gross oversimplification of the real situation. A more realistic theory indicates that thermal convection is probably confined to the outer mantle and is an unstable flow. There is evidence that it would have a character that would explain the narrowness and linearity of the pattern presented by the ocean ridges and some orogenic belts.