勢流邊界 的英文怎麼說

中文拼音 [shìliúbiānjiè]
勢流邊界 英文
potential-flow boundary
  • 勢 : 名詞1 （勢力） power; force; influence 2 （一切事物力量表現出來的趨向） momentum; tendency 3 （自...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 邊 : 邊Ⅰ名詞1 （幾何圖形上夾成角的直線或圍成多邊形的線段） side; section 2 （邊緣） edge; margin; oute...
  • 界 : 名詞1 （相交的地方; 劃分的界限） boundary 2 （一定的范圍） scope; extent 3 （按職業、工作或性別等...
  • 邊界 : boundary; frontier; border; borderline; edge range line; periphery
  1. In this paper a kind of cardio - cerebral arterial bifurcation vessel hemodynamic characteristics are studied with the boundary element method, and the blood flowing velocity vector distributions have been calculated. in addition, the flow field distribution and the pressure on the particle surface are also calculated, when there is flow - round particle at the place of bifurcation, the move tendency of the particle is judged, the possible reasons of causing the atherosclerosis, thrombus, angioma are analysed

    本文用邊界元方法研究了一類典型心腦動脈分支血管中血液流動的流體動力特性，計算了分支血管血液流動的速度矢量分佈，同時計算了分支附近有多個顆粒狀繞流物時血液的流場分佈，及顆粒物所受壓力狀況，給出了顆粒物的運動趨勢，分析了引起粥樣斑塊病變、血瘤、血栓的可能原因
  2. As the world economy goes to reginonalization, collectivization, the district economy is be coming more and more important in the world economy. the members of all the district economy organization make the inner - reginal trade, the movement of elements, the speed of economy increasing constantly because of the advantages of arens, resources and mutual supplements of economy structures, meantime, the members, who is not in the exclusivism andtrade protectionism, so china must make strong economic relationship between the countries ane areas nearby in order to develop the economy stably and taking eonomic cooperation and join the system of inter - reginal economy cooperation

    隨著世界經濟呈現出區域化、集團化的趨勢，區域經濟圈在世界經濟中所佔的地位也在逐步提高，各區域經濟組織成員由於地緣、資源優勢、經濟結構互補等原因，使得區域內部的貿易、要素流動、經濟增長速度不斷增加，同時，對于區域經濟組織外的非成員則不可避免地造成排外主義及貿易保護主義。所以，對中國而言，為促進經濟的持續穩定增長，就必須加強與周邊國家及地區之間的經濟往來，同時要進行全方位、多層次的區域性經濟合作，進而參與到國際區域經濟合作的體系中。
  3. Compared with traditional numerical methods such as the fem, fdm, etc, the lb method has several important features, including : simplicity in algorithm, easily programming, direct calculation of pressure from a state equation and amenability to simulate all kinds of flow field with complex boundaries, it also has much advantage in the respect of parallel computation because of its regional evolution

    與傳統的計算方法如fem 、 fdm等相比， lb方法具有演算法簡單、編程容易、壓力可以通過狀態方程直接求解、能夠模擬各種復雜邊界的流場等優點，並且計算的局域性使其在并行計算方面也具有很大的優勢。
  4. Study achievement appears as following aspects : ( 1 ) yellow river estuary gate river flow and tide flow mixed area is not keep standing deposition status, on special income water and sediment conditions, boundary conditions and oceanic power conditions, this area may on the scour status ; ( 2 ) observed from estuary sediment deposition distributing process : delta and sea offing area sediment deposition vary trend is similar, each part sediment deposition scale varies as wave shape ; ( 3 ) on estuary gate, affect the sediment deposition factors, primary factors are tide prop, the gate widens gradually, estuary gate have branches, brine induced flocculation. this paper study the estuary gate widen, estuary gate have branches to affect the river channel deposition in quantity ; ( 4 ) based on field measured data, for the first time, deduce the estuary sediment deposition and distributing regress formula which can estimate estuary different areas sediment deposition volume ; ( 5 ) this subject demonstrate the estuary delta coastline dynamic balance conception, build the relationship between the estuary income sediment with deposition land area, draw the following important conclusion : when estuary years - averaged income sediment keeps at 345 million tons, the delta coastline may on the dynamic balance status. ( 6 ) this subject firstly brings up estuary sediment optimized control conception, and has the primary study on the macroscopically optimized control conception method

    研究認為： （ 1 ）黃河河口口門逕流潮汐區域並非持續保持淤積狀態，在特定的來水來沙、邊界條件和海洋動力條件下，該區域可以處于沖刷狀態； （ 2 ）從河口泥沙沉積分配的過程來看：三角洲與濱海區泥沙的沉積變化趨勢是基本一致的，各部位的泥沙沉積比例變化基本呈波動狀態，且三角洲與濱海區泥沙的沉積比例與來沙量密切相關，基本成正比關系； （ 3 ）在口門處，影響泥沙沉淤的因素主要集中在潮汐頂托、口門逐漸加寬、河口門分汊、鹽水造成絮凝等，本報告主要對口門加寬，口門西妥理工大學工程碩士專業學位論文分漢對河道淤積的影響進行了定量分析: （一扣根據實測資料首次建立了河贖流路泥沙沉積分配的回歸計算式，據此可以預估計算河口不同區域泥沙的沉淤量; 、 5 ）本項研究首次論證了河口三角洲岸線動態平衡的概念，並建立了黃河河口來沙量與造陸面積的相關關系，得出了當河口多年平均來沙量維持在3 . 45億t時其河口三角洲岸線則可能處于動態平衡狀態的重要結論; 『 6 ）本項研究首次提出了河口泥沙優化調控的概念，並對其宏觀優化調控模式進行了初步探討。
  5. The analysis of the large - scale synoptic situation shows that strong precipitation is closely related to the explosion of monsoon and the intensification of cross - equatorial flow which bring a lot of vapor and meet with cold masses at the eastern of northwest district on 8th, june causing extremely heavy rainfall ; that subtropical high - level jet at 200hpa, subtropical high at 500hpa and low - level jet at 850hpa are the weather backgrounds favorable to strong precipitation ; that the pattern of eastern highs and western lows and the establishment of a low - level jet and the coupling between upper - and low - level patterns that determine that the rain occurred in the east of the northwest china ( on average, this is the rainy season for the south of china, but not for the northwest china ) ; that water vapor comes from southerly and easterly flow which converge at the eastern of northwest district with convergence mainly in lower levels and pbl ; that the high value of the whole - level apparent heat source < q1 > is near the area of large rainfall in the direction of northeasterly - southwesterly agreeable to shear line very well and the condensation latent heat releasing is main heat source with vertical advection item playing key role in q1 and q2 ; that there is a vertical secondary circulation crossing low - lever jet whose ascending branch is at the area of large rainfall ; that the construction of convection instability and conditional symmetry instability results that there is not only deep thermal instability, but also moisture influx and triggering mechanism of thermal instability causing strong torrential rain

    作為對比，本文還對2002年6月24 - 25日發生在北京地區的強地形雨進行了分析，並討論陜南、北京地區兩地暴雨的異同點以及地形作用的共性和個性，為兩地暴雨預報提供有益的參考，得出了一些很有意義的結果： 1大尺度環流背景分析表明： （ 1 ） 「 02 . 6 」強降水與6月上旬越赤道氣流和季風爆發密切相關，攜帶大量水汽的偏南氣流與冷空氣於6月8日交匯在西北地區東部，導致了這次強降水的發生； （ 2 ） 200hpa的副熱帶西風急流、 500hpa副高以及850hpa的低空急流的配置非常有利於本文分析之陜西強降水的發展與維持。大尺度形勢分析表明，東高西低形勢場、低空急流的建立和高低空形勢的配置決定了這場降雨出現在西北地區東部。與暴雨區相聯系，存在一支橫越低空急流的經向垂直環流，暴雨區處于該垂直環流的上升支； （ 3 ）偏南和偏東氣流水汽通道在西北地區東部交匯，水汽的輻合積聚主要在對流層低層和行星邊界層內完成； （ 4 ）整層的視熱源< q _ 1 >高值區在暴雨區附近呈東北-西南向分佈，與切變線走向非常一致，降水產生的凝結潛熱釋放是強降水區大氣的主要熱源。
  6. In order to predict hydrodynamic characteristics a computational system is developed including determination of the pressure distribution on a wing section by use of the conformal mapping method and panel method respectively and of the flow in boundary layer according to the thin shear layer approximation ( tsl ) for navier - stokes equation approach. the wing sections of naca4412 and naca0012 are applied to test the computational system. the numerical inspection shows that the panel method with better precision and the momentum and the displacement thickness of boundary layer can be used to complete this calculation

    本文分別用守屋的保角變換法和基於源匯渦分佈的面元法，建立了計算槳葉表面壓力分佈的數學模型；應用納維-斯托克方程的薄層近似理論模式和有限差分數值方法，建立了計算機翼表面邊界層內部流動的數學模型；應用槳葉表面邊界層內部粘性流動和外部勢流流動在邊界上的匹配演算法，建立了槳葉表面二相流流動的計算方法和相應的計算機程序。
  7. This thesis initiates a study about the thermal - hydraulic research for the target structure and optimization. investigating the target research work at home and abroad, we acquire their design gist and technological developing route in the according fields. comparing the numerical - calculational methodology of multi - physical such as finite difference method, boundary element method, disperse element method and finite element method, finite element method is the predominant methodology, we have appliance of this method to calculate fluid field thermal field and stress field

    針對靶區的結構設計，開展熱工水力學研究工作;調研國內外靶區的研究現狀，了解靶區的設計依據、技術發展路線及發展趨勢；調研多物理場的數值模擬方法-有限差分法、邊界單元法、離散單元法、有限元方法等等，其中最有效地方法是有限元方法；簡述有限元方法在流場、溫度場、應力場計算中的具體應用。
  8. ( 3 ) on parallel computing of the third generation ocean general circulation model from lasg / iap i ) we present an optimization model by multi - overlapping - boundary for parallel explicit integration with finite difference discretization, and point out that the gap between speed of network and cpu makes it a practical technique. we compare the parallel characteristics of spectral element and finite difference from the point of view of communications, communication - to - computation ratio and scalability

    （ 3 ）關于中科院大氣物理研究所第三代海洋環流模式的高效并行計算? ）基於對有限差分離散的分析，提出了一個面向顯式時間積分并行計算的多重疊國防科學技術大學研究生院學位論文邊界優化模型，指出了網路速度與處理器速度間的落差使得採用冗餘計算取代部分通信成為一種具有相對優勢的實用技術。
  9. 2. using a new method, virtual boundary element method ( vbem ) to electromagnetic calculating. this method, same as boundary element method ( bem ), need not analysis all the field area, and need not specially deal with no closed in boundaries. future more, vbem has advantage in calculating speed, and can avoid singularity integrating being predestined in bem

    2 .使用了一種新方法，虛邊界元方法用於強流電子槍電子軌跡的模擬，這種方法與邊界元法一樣不須要對所有場域進行計算，對于不封閉場域不須要做特殊處理，從而避免了有限元法和有限差分法的方法缺陷，它具有計算速度快的優勢，且不存在邊界元法所不可避免的奇異積分。
  10. The reason that ec can improve the competitive ability of firms lies in the fact that, the cost of firms can relatively contracted, and the firms have the competitive advantages of enlarging without boundary. the relatively contracting of firms cost means, the effect of diminishing of managerial costs can simultaneously occurred in the fields of production costs, marginal costs, and transaction costs, with the results that the barriers of competition was founded because of the higher transaction costs of provision regarding to the businessmen of productions and services, which are caused by the reduction of production costs rendered by higher productivity, and of managerial costs rendered by the effect of substitution of soft manufactory technology. the relative enlarging of the optimal bound of firms means, that the firms can share managerial costs through the effect of scale of management by the employment of ec, that the scale of firms is enlarged while the managerial costs are cut as a result of the distributing of managerial costs to every liners and proceeds of the firms, which means that the same managerial costs can be used by larger - scaled firms

    電子商務之所以能提高企業競爭力，是因為企業成本相對收縮和企業的無邊界擴張競爭優勢，所謂企業成本相對收縮即邊際成本遞減，這種邊際成本遞減效應可以同時出現在生產成本、管理成本和交易成本三個領域中，電子商務通過提高勞動生產率來降低生產成本，柔性製造技術的替代效應降低了庫存管理成本，與此同時，電子商務減少企業與消費者之間的環節，縮短路徑距離而降低企業內外的交易成本，提高了企業產品和服務分銷商改變供貨方式的交易成本，使之形成企業競爭的壁壘；所謂企業最優邊界的相對擴張，是指由於規模管理效應即電子商務運用信息技術使企業以低信息成本共享管理成本，使企業總體管理成本分攤到各個管理環節和流程中，企業規模擴大而邊際管理成本逐漸下降，相同的管理成本可用於管理更大規模的企業，即隨著電子商務在企業中的應用，企業的最優邊界相對擴張了。
  11. Global climatic change would cause the response of ecosystem. in arid and semi - arid regions such as shaanxi - gansu - ningxia region, what is the response of regional river runoff ? would it cause river runoff to increase or reduce

    陜甘寧地區處于對全球氣候變化較敏感的中緯度地區，是東亞夏季風邊緣帶，氣候乾旱不穩定，其主體部分為黃土高原中部的丘陵溝壑區，是世界上水土流失最嚴重的地區，生態環境十分脆弱，目前氣候暖干化趨勢明顯。
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