boundary pressure 中文意思是什麼
boundary pressure
解釋
油水或氣水界面之平均流體壓力-
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 -
Introducing the theory and application of boundary element method on the sound radiation, giving the process of solving vibration noise radiation problem using boundary element analysis software ; presenting the coupling theory and the combination analysis of finite element method and boundary element method, and doing relevant analysis based on close drum shell ; programming the noise data simulation program using the numerical calculation software, simulating the acoustic and pressure data of a key point in the transient response acoustic field of the close drum shell, realizing the audibility of the noise, using the virtual reality tools to simulate the vibration noise of the drum shell ; combining the finite element method and boundary element method to analyze the vibration noise radiation of some gear box, and completing the whole simulation process of the vibration noise of the gear box
綜合介紹了邊界元法在聲輻射問題上的理論及應用；並給出了運用邊界元法分析軟體求解振動聲輻射問題的過程。闡述了有限元法和邊界元法的耦合理論及組合分析方法，並以封閉鼓形薄殼為分析對象進行了相應的分析。利用數字計算軟體編制了噪聲數據模擬程序，並模擬了通過組合方法分析封閉鼓形薄殼瞬態響應聲場而獲得一關鍵點的聲壓數據，實現聲音的可聽化，隨后通過虛擬現實工具實現了該情形下橢球殼振動噪聲的虛擬模擬。 -
The way to get ko was given in this paper. by this way, the turbulence control equations were constructed from reynold equations with static pressure supposition and boussinesq ' s turbulence viscidity coefficient supposition and the salinity transportation equations, which are representative of the matter transportation equations, are given. the integrated deduction and corresponding boundary conditions are also given
根據上述思想，從雷諾方程出發，採用靜壓假定和包辛內斯克的紊動粘性系數假說，建立了新坐標系中的紊流控制方程組，同時給出了對物質輸運過程具有代表性的鹽度輸運方程、相應的邊界條件及完整的推導過程。 -
This paper establishes a model simulating dam actual placing process and considering the non - continuity of initial temperature on the boundary of new and old concrete, daily air temperature change, concrete - placing temperature, hydration heat, heat insulation on boundary, water - storing process, placing intermission and curing with water. the calculation of stress field considers the concrete weight, static water pressure, thermal stress, different autogenous volume change between rcc and normal concrete, change of elastic modulus of concrete with age and creep action
考慮了乞今最為全面的初始條件和邊界條件，包括模擬壩體的實際升程過程，考慮了新老混凝土接觸面上的初始溫度不連續，逐日的氣溫變化，混凝土的入倉溫度，水化熱溫升，邊界保溫，水庫蓄水過程，澆築間歇以及灑水養生等因素；應力場的計算考慮了混凝土的自重，靜水壓力，溫度應力，常態混凝土與碾壓混凝土不同的自生體積變形，混凝土的彈性模量隨齡期的變化以及徐變的作用。 -
Guidelines for pressure boundary bolted flange joint assembly
壓力邊界螺栓法蘭連接組件導則 -
Instead of closed boundary conditions which will bring large pressure effects because of return flow, a flow through boundary condition is adopted
該模型的主要特點是採用開放邊界條件，從而可以避免原有封閉模型因迴流問題而產生的復雜效應。 -
Using the system designed in this thesis work, flow field calibration of the wind tunnel is accomplished, which covers dynamic pressure drop coefficient, dynamic pressure time stability, axial static pressure gradient, boundary layer, and degree of turbulence, etc. boundary layer measuring principle and method are especially described in detail, the relationship between boundary layer thickness, wind speed setting, and the depth of the experimental section is summarized, and finally the calibration data for th e model center zone under specific wind speed are given
然後利用本文設計的系統完成了落差系數、動壓時間穩定姓、軸向靜壓梯度、邊界層及湍流度等內容的流場校測。特別對邊界層測量的原理及方法做了較詳盡的敘述，總結出邊界層厚度與設定風速、實驗段深度的關系，然後給出模型中心區一定風速下校正數值。 -
Thirdly, pre - euro diesel vehicles of vehicle weight over 4 tonnes and with body types of concrete mixer, gully emptier, lorry crane or pressure tanker, except those issued with a cross - boundary road permit, will have to be installed with emission reduction devices
第三項措施是規定重逾四公噸的歐盟前期重型柴油車輛（跨境長怠速車輛除外）而其登記車身類型為混凝土車、溝渠清潔車、機動式起重吊車或壓縮缸車，必須安裝減少排放物器件。 -
The characteristic inflow boundary conditions are used at the inflow boundary. we also set the pressure correction term at the outflow boundary
入口邊界採用特徵入流邊界條件，並在出口邊界作壓力修正。 -
Seismologist william mccann and his colleagues have identified trouble spots in a remote region of alaska on the boundary between the north american and pacific at which there has been only minor activity to relieve pressure for 30 years more
地震學家威廉?麥卡恩和他的同事們準確地測出了在北美板塊和太平洋板塊接界的阿拉斯加的一個邊遠地區，是地震活躍區。 -
Using method of oil - flow visualization techniques and measuring pressure distribution along airfoil chordwise and spanwise studies have been down for sidewall boundary - layer displacement effect in two - dimensional wind tunnel. three different chord models were tested in two different wind tunnel. in order to clarify the sidewall effects and study method of sidewall suction theory and sidewall interference correction method to remove effects of sidewall on model. the results of oil - flow test show that selection rational suction wary can obtain better testing results. by investigations on effects of the sidewall boundary layer suction and application of a sidewall interference correction method
為了很好地解決多機場航班隊列的擁塞問題，在將進場容量、離場容量與機場容量作為統一整體的情況下，充分考慮了機場間的網路效應，詳細研究了多機場航班隊列的優化問題，建立了多機場開放式非實時流量管理的數學模型，通過選取適當的決策變量，使其為線性0 - 1整數規劃模型，實現了中心流量集中管理.與其它演算法不同，本文提出的啟發式隱枚舉演算法能很好地解決此類問題，對某機場網路系統的模擬結果證明了所建模型、優化演算法及相應軟體的有效性和可靠性 -
In 2000 passed theiso9001 quality system authentication, the main camp product includes : the filter, filters the separator, the oil - water separator, thesilencer, cuts shui qi, the respiration valve, the fire resistance, the hydraulic pressure safety valve, kong leijian, the metal vlexiblehose, the ripple compensator, fluctuates under the oil installment, the pot the sampling, the crane tube, lightly falls the springboard, the steel structure trestle, the liquid level indicator, the oilinterceptor, the heater, regards product and so on boundary
2000年通過了iso9001質量體系認證，主營產品有：過濾器、過濾分離器、油水分離器、消聲器、切水器、呼吸閥、阻火器、液壓安全閥、孔類件、金屬軟管、波紋補償器、浮動出油裝置、罐下采樣器、鶴管、輕落跳板、鋼結構棧橋、液面指示器、阻油器、加熱器、視境等產品。 -
The main work includes : based on biot ' s dynamic consolidation equations, by the method of integral transform and matrix transfer, two - dimensional consolidation of layered saturated soils is studied. then, the general integral solutions of stress ( including pore pressure ) and displacement ( including fluid flow ) of any point were obtained under harmonic vibration loads according to staunch boundary condition. second, a program to verify the correctness of this dissertation is developed
主要工作有：本文根據biot平面動力固結方程，運用積分變換和矩陣傳遞的方法，研究了成層飽和地基的二維biot固結問題，根據下邊界為不透水基巖的邊界條件，獲得了地基表面作用簡諧振動荷載時，任意點應力（包括孔壓） 、位移（包括流體流量）的一般積分形式解。 -
The boundary layer can indicate the comprehensive influences of oil reservoirs, the physical properties ( reservoir porosity, permeability, fluid viscosity and its composition ) of inside fluids and development conditions such as pressure gradient : the layer thickness reduces with the rise of capillary radius ; when capillary radius is fixed, the thickness increases with viscosity rise ; the more polarity composition content is, the more obvious the absorption, the thicker the boundary layer, more and more obvious the characteristics of non - darcy filtration
邊界層反映了儲層、流體物性條件（儲層孔隙度、滲透率、流體粘度、組分）和開發條件（壓力梯度）的綜合影響，認為邊界層厚度隨著毛管半徑的增大而減小；在毛管半徑相同的情況下，邊界層厚度隨壓力梯度的增大而減小，最後達到一個臨界值；毛管半徑一定時，邊界層厚度隨粘度增加而增大；極性組分含量越大，吸附越明顯，邊界層厚度越大；邊界層厚度越大，非達西滲流特徵越明顯。 -
The force control of suspension bridge anchorage cable is the main contents which will be researched. according to the character of suspen - sion bridge anchorage, three questions is solved in this paper on the basis of the construction control experience of the highway bridge of yichang yanzhi river. firstly, an effective method of cable force control is presented in this paper, which has settled the puzzle of cable force accurate operate through fixing a pressure transducer at the behind of the hydraulic jack. secondly, an exactitude calculation model is founded in this paper. in addition the influence of boundary condition, sag, inclination, flexural rigidity and environment temperature to the cable vibration frequency which make the frequency method could be used to the measurement of cable force. in the end of this paper, a control system of anchorage cable force is developed on the basis of the above research. this system is very steady, credible, high precision and convenient. it is a new and credible method to be used to the force control of sus - pension bridge anchorage cable. in this paper, the conundrum of cable force control has been solved. the fruits are very useful to the development of inland suspension bridge
提出了一種有效可行的錨跨張力控制方法，即通過在油壓千斤頂后加壓力傳感器，並利用單片機技術進行數據採集，解決了懸索橋錨跨索股初張力精確控制的難題；建立了錨跨索股索力的精確計算模型，分析了索股的邊界條件、斜度、垂度、抗彎剛度及環境溫度對索股頻率的影響，解決了弦振法在大跨徑懸索橋索力測試中的應用問題；在上述研究成果的基礎上，研製出了錨跨張力控制系統，該系統具有穩定可靠，精度高，使用方便等特點，它的投入使用將為我國今後大跨徑懸索橋錨跨張力控制提供一種全新的、可靠的手段。 -
This paper takes jin ’ ao mansion and adjacent buildings as the study object. first we put the stated reduced scale model in the atmospheric boundary layer which the tunnel simulates, applied the dynamic pressure measure technology on the building ’ s surface to get the mean and fluctuating wind pressure coefficient, drew out the contour of pressure coefficient and analyzed its distributing law and characteristic
本文以金奧大廈及其鄰近建築作為研究對象，首先把一定縮尺比的模型置於風洞模擬的大氣邊界層環境中，運用建築表面動態測壓技術獲得金奧大廈表面的時均風壓系數和均方根風壓系數，繪制時均風壓系數和均方根等值雲圖並分析其分佈的規律和特點。 -
Several feasible boundary conditions of thermal environment computations are provided. numerical simulation of thermal environment in that residential district is carried out depending on theoretical studies, wind environment simulations and thermal environment testing mentioned above. distributions of wind velocity, pressure, turbulence and temperature in two different periods are investigated and analyzed, and feasibility of thermal environment numerical simulation is proved by comparison of temperature and velocity values between testing and simulation in some tested spots
提出幾種可行的熱計算邊界條件，在上述基礎理論研究、風環境模擬計算、熱環境測試等基礎之上對住宅小區熱環境進行了數值模擬，分析了兩種時段內風場、壓力場、湍流場及熱場分佈，並比較了部分地點溫度和風速測試值與計算結果的差異，論證了熱環境數值模擬的可行性。 -
Abstract : based on the operation data, the cold start - up and warm start - up curves of a czecho 200 mw steam turbine are worked out according to the operation rules ; the fem calculating models of the temperature field and stress field of the high pressure rotor are established, and the suitable boundary conditions are given ; the temperature field and stress field of the high pressure rotor are calculated and analysized during these two working situation
文摘:在現場實測數據的基礎上，根據運行規程擬定捷制200mw機組的冷態啟動和溫態啟動曲線；建立高壓轉子溫度場和應力場有限元計算模型，確定相應的邊界條件；計算分析在這兩種工況下高壓轉子的溫度場和熱應力場。 -
The primary function of reactor protection system is to protect the integrity of the three nuclear safety barriers, namely, fuel cladding, primary pressure boundary and containment. when the certain safety limits, determined by the accident studies, are exceeded, the reactor protection system will give the protection signals of reactor trip and / or safeguard actuations, and then the reactor trip system and / or the engineered safety features are actuated
反應堆保護系統的功能主要是保護三道核安全屏障（燃料包殼、一迴路壓力邊界和安全殼）的完整性，當運行參數達到危及三道屏障完整性的閾值時，保護系統動作觸發反應堆緊急停堆和啟動專設安全設施。 -
Boundary element analysis on the flow field and pressure field of flow around cascades with small angle of attack
小沖角翼柵繞流問題流場和壓力場的邊界元分析
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