单词 | strouhal |
释义 | Strouhaln. Mechanics. Strouhal number n. a dimensionless number used in the study of the vibrations produced in a body by a fluid flowing past it, defined as vd/u (or u/vd) where u is the fluid velocity, v the frequency of the vibration, and d the effective diameter of the body. ΘΚΠ the world > matter > physics > mechanics > types of motion > [noun] > vibration or oscillation > specific number used in specific analysis Strouhal number1949 1949 Proc. Royal Soc. A. 198 175 The results are expressed in the form of Strouhal number: S(R) = fd/Uo, where R = Uod/v. 1975 Offshore Engineer Dec. 42/3 For an isolated stationary cylinder the Strouhal number is fairly constant for a wide range of Reynolds numbers. This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018). < n.1949 |
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