首尾對稱 的英文怎麼說
中文拼音 [shǒuwěiduìchèn]
首尾對稱
英文
fore-aft symmetry- 首 : Ⅰ名詞1 （頭） head 2 （首領） leader; head; chief 3 （表示方位） aspect 4 （姓氏） a surname Ⅱ動...
- 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
- 稱 : 稱動詞（適合; 相當） fit; match; suit
- 首尾 : 1. （起頭部分和末尾部分） the head and the tail; the beginning and the end2. （始終） from beginning to end
-
Based on an engineering background, through numerical simulation of the flow field in the hp turbine of the energy efficient engine ( e3 ), the article research the unsteady flow in a transonic turbine stage, the unsteady phenomena in the stage include the shockwave, wake, shedding vortex, endwall vortex, passage vortex and leakage vortex, etc. there are two shockwaves generated on the vane the tailing edge, one on suction side is named moving shockwave, and name another on pressure side steady shockwave
本文首先對于研究的意義和國內外研究的現狀做了簡要的介紹，再從某工程背景出發，通過對e3發動機高壓渦輪內流場的數值模擬，研究了干涉的周期性的問題，以及渦輪級內常見的非定常現象：激波、尾跡、脫落渦、根腳渦、通道渦、漏流渦。導向器尾緣會出現兩道激波，在吸力面的激波可稱為「運動」激波，壓力面的激波可稱為「定常」激波。Some differences in value may be due to the omission of the fluid viscosity. the hydrodynamic interactions between two approaching or disparting spheroids, between two parallel torpedo - type or airplane - type platforms, between fore - and - afterward symmetrical uuv or platform and parent submarine have been investigated numerically, from which some interaction laws are drew
另外還進行了以下受力計算：兩個相互靠近或遠離的橢球體、魚雷型平臺在壁面或潛艇附近運動、飛機型平臺在壁面或潛艇附近運動、首尾對稱魚雷狀uuv與潛艇相對運動。Based on the potential flow theory and the general dynamics principle, two kinds of formula for calculating hydrodynamic forces and moments, which are in lagrangian form and bernoulli form, and a lot of corresponding numerical results using bernoulli formula are given
根據勢流理論計算流場，給出了受力計算的lagrange公式、 bernoulli公式，以及使用bernoulli公式計算的結果。物面網格離散時，著重考慮並分析了尾部平端面和首尾不對稱性這些因素對受力計算精度的影響。
分享友人