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Reply to the comment by B. Ji [1] in this special issue. 相似文献
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Summary In a recent note by Shepherd it is claimed that the main conclusions discussed in a paper by Petroniet al. about certain instability mechanisms for steady equivalent barotropic flows are incorrect and, although no criticism is made
regarding the analytical treatment, two counterexamples are presented to support this thesis. In addition to this it is asserted
that the envisaged necessity for energy and enstrophy to be transferred in both spatial directions in a normal-mode instability
is ?extremely well known?. Here we demonstrate that Shepherd's conclusions are without foundation and confirm the validity
and originality of Petroniet al. results by showing that:a) the first counterexample describes a situation that is in fact provided for by Petroniet al.'s analysis;b) the second counterexample is not dynamically realizable and, even if it were, the related conclusions would not apply to
flows defined in doubly periodic or bounded domains such as those considered by Petroniet al.; c) the mechanism cited above is not known at all in the specific context dealt with by Petroniet al. We emphasize this by pointing out that for steady equivalent barotropic flows the range of parameters for which such an instability
mechanism is allowed complements exactly the range for which the steady states are stable according to Benziet al. 相似文献
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Marcelo S. Berman 《International Journal of Theoretical Physics》1996,35(5):1033-1035
We discuss a recent paper by Beesham, showing that his criticism of an article by Berman is based on a contradiction, though
his arguments are interesting. 相似文献
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We reply to the comments made by Cooperstock and Faraoni concerning (1+1)-dimensional gravity. 相似文献
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F. González-Gascón 《Physics letters. A》1978,66(1):8-10
The distortions introduced in a recent paper (for v > 1) are unavoidable and the “experimentally measured distortions” quoted by Lemke are not distortions at all. 相似文献
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The experimental results indicate that the composition of our samples is homogeneous. We have explained the reason why the composition of the BCN film is influenced by the r.f. power. The Fourier transformed infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) measurements suggest that the samples are atomic-level hybrids of B, C and N. 相似文献