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International Journal of Fluid Mechanics Research

年間 6 号発行

ISSN 印刷: 2152-5102

ISSN オンライン: 2152-5110

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.1 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.0002 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.33 SJR: 0.256 SNIP: 0.49 CiteScore™:: 2.4 H-Index: 23

Indexed in

The Use of Temperature Transients to Calculate the Thermal Diffusivity in Powders

巻 25, 発行 4-6, 1998, pp. 753-762
DOI: 10.1615/InterJFluidMechRes.v25.i4-6.270
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要約

This paper describes the development of a quick and simple method which can be used to measure the thermal diffusivity of fine powders. The method is based on measuring and analyzing the phase lag which evolves in a cylindrical sample of powder subjected to an oscillating temperature wave originating at its axis. The variation of this phase lag with frequency has been analyzed using both an analytical solution and a finite difference model. The analytical solution is the quicker method but the finite difference method is considered to be the more accurate. There is, however good agreement in the values found from both solutions. These solutions were applied to the results obtained from tests on three powders and then-apparent Thermal Diffusivities are close to those predicted using other methods. As a comparison a test was performed and analyzed with the rig filled with paraffin wax and the value obtained is close to that published in the literature.

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