| 词汇 | vortex |
| 释义 | vortex noun uk /ˈvɔː.teks/ us /ˈvɔːr.teks/pluralvortexes or vorticesuk /-tɪ.siːz/ us /-tə-/ [ C ] environment specialized a mass of air or water that spins around very fast and pulls objects into its empty centre旋涡;涡流 [ Cusually singular ]literary a dangerous or bad situation in which you become more and more involved and from which you cannot escape: （困境的）旋涡 I was sucked into a vortex of despair.我被卷入了绝望的旋涡里。 Wind & winds anemometer blast chinook crosswind cyclonic draughty easterly gale northerly sea breeze sigh slipstream stiff the Coriolis effect tornado vorticity weathervane windblown windswept wuthering You can also find related words, phrases, and synonyms in the topics: Difficult situations and unpleasant experiences vortex | American Dictionaryvortex noun[ C ] us/ˈvɔr·teks/pluralvorticesus/ˈvɔr·t̬ɪˌsiz/ earth science a mass of air or water that spins around very fast and pulls objects into its empty center Examples of vortexvortex Is it just that there were too many vortices in the wake ? One is to keep the analysis as simple as possible to explain the cigar-like shape of the vortices found in the three-dimensional computations. The vortices decrease in diameter as they travel downstream. The mechanism through which the vortices generate sound is of general interest in aeroacoustics. Beyond the existence of hairpin vortices, the data also show individual hairpins commonly aligned behind each other in the x-direction to form a group. The waves propagate away and the vortices ultimately reach an equilibrium, which is discussed below. In the case of finite-core vortices, the problem of the stability of this state needs special examination. Reported first are the results of 234 moderate-resolution calculations used to determine the margin of apparent nonlinear stability for strained, initially circular vortices. The existence of these counter-rotating vortices within the sublayer has been demonstrated by several techniques. While the exact reasons for the formation of these vortices are not known, several theories have been proposed. In this case, the intense perturbation of the upper boundary favours the generation of downstream patches of vortices travelling with high phase velocity. Upper vortices are at the surface and their interaction is effectively strengthened owing to the influence of their 'images' with respect to the boundary. The localized suction and induced streamwise vortices introduce strong distortions of the streamwise velocity. The motion thus started continued downstream in the form of a pair of trailing vortices. When the transverse vortices convected downstream, an ejection sequence occurred near the wall. See all examples of vortex These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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