dissipation region 中文意思是什麼

dissipation region 解釋
耗散區域，彌散區域散射范圍
  • dissipation : n. 1. 消散，分散；【化學】散逸。2. 浪費；消耗，損耗。3. 放蕩，閑游浪蕩。4. 消遣，娛樂。
  • region : n. 1. 地方，地域，地帶；地區；行政區，管轄區，區；左近，鄰近；（大氣、海水等的）層，界，境。2. 【解剖學；動物學】（身體的）局部，部位。3. （學問等的）范圍，領域。4. 〈罕用語〉天空。
  1. Secondly, a mathematical model suitable to large coastal region is developed, whose governing equations are deduced from the mild slope equation with dissipation terms and discretized with crank - nicolson scheme. this model is accurate and easy to be applied

    其次，將包含底摩阻耗散項的緩坡方程化為等價的控制方程組，採用crank - nicolson格式離散方程組，建立了適宜於大范圍水域內波浪傳播的數學模型。
  2. 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。
  3. The calculations axe based on the equation of current motion with temperature and field - dependent critical current density, and the heat dissipation produced by flux motion in the normal state region and the superconducting state region

    此計算基於電流運動方程，考慮到電流密度是溫度和磁場的函數，考慮到在正常區和超導區由磁通運動產生的熱耗散。
  4. Improvement on the theoretical model for dissipation - rate budgets in near - wall region of a turbulent boundary layer

    近壁區理論耗散率模型的改進
  5. The results show that a warm high ridge at the middle level and transformed surface cold high over the plain provide a good background condition ; a cooling process produced by net surface radiation fluxes is the trigger and strengthening mechanism for the fog event ; the subsidence flow at the middle and low tropospheric levels is favorable for the setting - up and maintenance of stable stratification at the boundary layer and weak wind condition at the ground layer over the fog region ; the transportation of weak warm advection at lower levels and weak lift motion at the boundary layer play a very important role to the long maintenance of the fog event ; the intrusion of north wind accompanied by cold advection is a main dynamic factor of the fog dissipation

    結果表明：在中高層暖性高壓脊及地面變性冷高壓穩定維持的大尺度背景條件下，地表凈輻射引起的近地層冷卻是大霧過程的觸發和加強機制；中低空下沉氣流的存在有助於近地層的弱風條件和穩定層結的建立；低層暖平流的輸入和邊界層的淺層抬升是大霧長時間持續的原因；伴隨冷空氣南下的偏北大風是驅使大霧消散的動力因子。
  6. When the atmosphere system occurs nonlinear instability in the subcritical instability region, it will split more wave resolutions than in the supercritical instability region and need more time to occur the subcritical instability, therefore it may have effect on the form and development of some synoptic system. 3. starting from nonlinear equations on the f - plane containing frictional dissipation under the boussinesq approximation

    大氣系統在亞臨界不穩定區發生非線性不穩定時，會比超臨界不穩定區分裂出更多的波動解，而且發生亞臨界不穩定需要更長的時間，因此它可能在某些天氣系統的形成和發展過程中起到一定的作用。
  7. This article introduces a new conception named the landing region to attenuate the landing impact loads during touchdown. in the opinion of energy absorption and dissipation, this new method will have great potential for attenuating the landing impact forces

    引入降落區概念以後，飛機的著陸動能將由飛機起落架和降落區緩沖機構共同承擔，從而為飛機起落架的著陸減震技術開辟了一個潛力巨大的新方向。
  8. The local energy dissipation of particles caused by the resistance decreases linearly with the increase of the height in the bottom flow region

    顆粒因阻力作用在就地損耗的能量e在底部流區隨高度的增加而線性減小。
  9. Hongjiadu hydraulic power plant is the only leading water storage reservoir of wujiang cascade hydraulic stations, which is a full - time storage reservoir. 2 * landslide body is distributed at the right side of downstream, which is just located in the region of energy dissipation. erosion gully may cut the bottom of the landslide body. there are roads on the top of the landslide body during the construction period and operating period

    洪家渡水電站是烏江梯級水電站中唯一具有多年調節性能的「龍頭」水庫， 2 #塌滑體分佈於壩址下游右岸，恰好位於泄洪消能防沖區內，沖坑將塌滑體下部切腳，而且施工期和運行期在其上都布置有公路，因此2 #塌滑體失穩將影響整個水電站的正常運行。
  10. The numerical results under different methods, especially the simulation of recirculation region and reattachment length were carefully checked and compared. it indicated that the " variable c ? " model could effectively increase the dissipation near the wall and, more over improve the simulation of the reattachment length to close to the experimental results. 4

    比較不同修正方法下的圓管湍流計算結果，尤其是迴流區域和再附著長度的模擬結果表明：變模型常數的-模型有效地的增加了近壁區域的湍能耗散率，使再附著長度的計算結果更接近於實驗結果。
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