vortex core 中文意思是什麼
vortex core
解釋
渦核-
In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively
本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。 -
The paper gives a mechanical and history analysis on the characteristic of laojunshan metamorphic core complex in southeastern yunnan and its structural environment, and considers that metamorphic core complex is actually a nuclear column of a vortex structure, which was caused by the wenshan ? malipo strike - slip fault
通過滇東南老君山變質核雜巖特徵及周圍構造環境的力學分析及歷史分析認為，該變質核雜巖實質上是旋扭構造的砥柱，而旋扭構造又源於文山?麻栗坡斷裂的走滑運動，拆離伸展構造晚于旋扭構造。 -
The effect of variation of vortex generator height on heat transfer enhancement performance in finned oblate oval tube test core with six vortex generators per tube
每管六渦扁長橢圓管換熱板芯渦產生器翼高對強化傳熱的影響 -
In present dissertation, dynamical process of transition from the vortex state to the core state with lower energy and no angular excitation after removing the external rotating perturbation which makes the vortex state formed in bec is discussed firstly
論文首先討論外界旋轉的微擾使bec產生渦旋，之後被撤掉，渦旋態向能量低、無角動量激發的核心態躍遷的動力學過程。
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