邊壁影響 的英文怎麼說
中文拼音 [biānbìyǐngxiǎng]
邊壁影響
英文
wall action-
By comparing the dry plate pressures drop and distributions of velocities simulated on single valve with those of double valves, it was found that there was intense turbulence in the flow fields around fixed - valve, there were eddy areas between valve side orifices and tray wall, there were eddies above the valves too, these led to the complex behaviors of gas perforating valve, these had a great effect on the gas - liquid mass transfer process. at the same time, in order to prevent the disadvantageous effect of gas between one valve with another on the gas - liquid mass transfer, it was very effective to change the fields of gas perforating valve by folding the edges of valve
通過對數值模擬得出的單閥和雙閥塔板的干板壓降及流場速度分佈分析對比后發現,固定閥周圍流場存在較強的湍動,閥側孔與塔板壁面區域以及閥體的上方空間存在明顯的渦流區,使氣體穿閥后的行為變得復雜,並對氣液傳質過程產生重大影響;模擬結果表明,為防止和削弱固定閥間的對沖造成的「死區」對傳質帶來的不利影響,通過折邊來改變氣體的氣路是非常有效的,模擬值與實驗值基本得到吻合。The water vapor content, in all, is relatively less over the gobi and hungriness and more over the oasis ; there is " the clothesline effect " which influences the stabilization and development of the oasis at the margin of the oasis or the long and narrow protection forest through the deserts or in the neighborhood of the river and the aqueduct
戈壁沙漠上空水汽含量相對較少,綠洲上空水汽含量相對較大;綠洲邊緣或通過沙漠的窄長護林帶、河流以及水渠附近,存在著影響綠洲穩定和發展的「曬衣繩效應」 。In the paper, the finite element simulation software dynafrom is applied to analyze the affect of different blank holder during the forming process of laminose stepped tubular part, predict the possible defects such as wrinkle and break, obtain the rational style of blank holder avoiding the occur of defects and determine the rational configuration of die. the forming affect of thin - wall shallow stepped tubular part is analyzed when using different lubricate condition ( friction coefficient ). by this method, the relationship between friction coefficient and drawing depth of laminose stepped tubular part is obtained
本文利用有限元模擬軟體dynafrom分析了不同類型的壓邊圈對薄壁階梯筒形件成形過程的影響規律,預測了採用不同類型壓邊圈時可能出現的成形缺陷如起皺和拉裂,獲得了防止缺陷產生的合理壓邊圈形式,確定了合理的模具結構形式;分析了不同的潤滑條件(摩擦系數)對薄板階梯筒形件成形的影響,獲得摩擦系數與薄板階梯筒形件的拉深深度的關系;分析了階梯筒形件成形過程中的不同階段的應力應變分佈、毛坯材料厚度變化情況,並獲得了階梯階梯筒形件能一次拉深成形的條件。Since 1976 it has been made great achievements which has conducted water more than 100 billion m3 and has been an important project of heilongjiang province. but recently the channel has been seriously freezing - melting eroded and sand of cliff edge has been deposited along the channel, which resulted to highten the channel bottom, increase width of the channel and reduce horse road. what all above have affected to apply safely channel so it is necessary to repair comprehensive
自1976年建成以來,已累計引水100多億立方米,取得了巨大的經濟效益,成為黑龍江省西部關繫到國計民生的重點工程,但近年來渠道破壞嚴重,凍融侵蝕強烈,邊壁剝蝕下來的泥沙經渠道內水流搬運沿程發生淤積,導致渠底抬高,渠寬增加,馬道縮小,已經嚴重影響到渠道的安全運用,必須進行綜合治理。The effects of reynolds number, back surface of nozzle, aft - dome configuration and degree of submergence on aft - end internal flow were studied by both cold gas simulation and numerical simulation. it is showed that the separated flow is sensitive to the change of reynolds number and aft - end cavity configuration
最後,利用冷流模擬與數值模擬相結合的方法,研究了雷諾數、噴管背壁形狀、后封頭形狀和潛入深度對燃燒室尾部流場的影響,結果表明流動的分離對雷諾數和背壁區幾何邊界的變化很敏感。By direct shear for and normal triaxial shear tests of non - saturated desert sand, the parper studied the effect of water content and dry density on the strength of the non - saturated desert sand, and set up the code of this sand. based on the plane strain test of non - saturated desert sand slope, the paper analysed the destruction way of the excavaion side during the construction by means of adding water, and brough forward a formule that calculates the allowable of excavation and pile hole
通過非飽和沙漠砂直剪試驗和常規三軸剪切試驗,研究了含水量和干密度對非飽和砂強度的影響,建立了這種砂的強度準則。通過非飽和沙漠砂邊坡室內平面應變試驗,分析了沙漠井場浸法施工中就基坑壁的破壞方式,推導出了基坑和樁孔容許開挖深度的計算公式。Effect of heated wall on extended self - similarity of wall turbulence
壁面加熱邊界條件對湍流擴展的自相似性的影響Neglecting the influence of some factors, such as liquid ' s viscidity etc., upon the process of empty bubble breaking, the authors analyze the pressure variation on bubble ' s wall in all directions when it shrinks, and deduce the equation of its moving track towards the rigid side wall under the function of asymmetry pressure
摘要通過對忽略液體粘性等一些因素對空泡潰滅過程的影響,分析了空泡在收縮過程中,泡壁四周壓強的變化,得出空泡在此不均勻壓強的合力作用下向剛性邊壁運動的軌跡方程。Result of numerical simulation shows that the grads of continuous phase " s velocities decreases with the presence of microbubble of which the diameter is 100 / / w, the profiles of air volume fraction in the boundary layers is similar to triangle or echelon, affected by interaction among the particle, there is a saturated air fraction, within the scope of saturated air fraction, increasing the air injection ratio can accrete the friction reduction ratio, under the condition of same air injection ratio, the free - steam velocity is larger, the effect of friction reduction is worse
計算結果表明,直徑為100 m的微氣泡能減小近壁面連續相的速度梯度;微氣泡在邊界層中的濃度分佈近似為三角形或梯形分佈;受粒子間相互作用的影響,存在一飽和濃度;減阻率隨噴氣量的增大而增大,直至飽和噴氣量,此後,增大噴氣量,壁面摩擦阻力變化不大;相同噴氣量下,來流速度越大,減阻率越低。At first, the finite element formulation is presented to determine the flutter characteristics of laminated panels at elevated temperature. then both the linear and nonlinear panel flutter characteristics are analyzed. the panel flutter boundaries are finally determined and the effect of temperature, airflow speed, etc, on the panel flutter characteristics is analyzed
為此,本文首先建立了復合材料壁板熱顫振的有限元模型並對受熱壁板的線性和非線性顫振特性進行了研究;最後確定了壁板的顫振邊界,分析了溫度、來流速度等因素對壁板顫振特性的影響規律。The primary contents are as follows : 1. according to the feature and the theory of shield tunnel construction, based on the factors that cause effects on environment, the workable monitoring project is established, which include principles of design, the selection of monitoring cross section, the layout of monitoring points, monitoring content and materials feedback. such as operation program, selection of earth pressure, wall - back grouting, rectification of shield machine, which are used to reduce the effect of construction on environment, are analyzed in detail
完成的主要研究內容如下: 1 、根據盾構法的施工特點及原理,在明確了盾構施工安全影響因素的基礎上,從監測方案設計原則、監測斷面的選擇、監測點的布置、監測內容以及信息反饋等出發,提出行之有效的監測方案;詳細分析了掘進模式、土壓力選擇、壁后注漿、盾構糾偏等施工控制手段,用來減小盾構施工對周邊環境的影響。According to the experiment of influences of fiber structures and the width of edge channel on flow filling, it was found that even a small gap ( l or 2mm ) between the preform and the mold edge could also disrupt the flow pattern, which evidently changed the local permeability of preform. the filling process was simulated using the permeability for different edge width predicted by a. hammami or poiseuille model, which shown good agreement with the experiment results
實驗研究了纖維鋪層結構及流道縫隙的寬度對充模流動的影響,發現在纖維預成型體和模具壁間存在的較小的縫隙也會對邊緣的流動產生干擾,進而影響增強材料主體的滲透;對于不同的縫隙寬度,分別根據a . hammami模型和poiseuille模型預測邊緣等效滲透率,並進行充模過程數值模擬,與實驗結果吻合較好。Turbulence over flat wall is presented with the cfd software cfd ace ( u ) when given by various inlet boundary conditions, subgrid model and turbulence intensity under the two - dimensional circumstance. on comparing these outcomes with the experimental data, we can analyze the impacts that all these factors have on the development of flow boundary layer
採用計算流體力學軟體cfdace ( u ) ,在二維情況下應用不同的進口邊界條件、亞格子模型和來流湍流度對平壁流動進行大渦模擬,並將模擬結果與已有的實驗結果進行對比,分析比較了這些因素對流動邊界層發展的影響。4. the elementary analysis about the geometrical parameter influences of plate thickness and breadth of rib beam on mechanical properties of the thin - wall core box cast - in - site concrete hollow floor is also made. a single geometrical parameter on mechanical properties of such floor system is set forth and the fitting scale for these parameters is determined to provide the reference when designing
4 、對影響薄壁箱體現澆混凝土空心樓蓋內力和變形的板邊梁寬度、肋寬、肋間距、板厚等因素進行了分析,討論了單一幾何參數對該樓蓋受力性能的影響規律,提出這些參數適宜取值范圍,為對這種樓蓋進行設計時提供參考。Compared with other general cfd software, the numerical modeling software of combustion process improved by the author of this paper has following features : ( 1 ) it can adjust the corresponding parameters and manipulating methods according to furnace architecture, operational parameters and fuels etc. ; ( 2 ) it can arrange the nodes of grid flexibly and also make special calculation to certain nodes, which cannot be accomplished by the general commercial software ; ( 3 ) in the boundary ( water - cooled wall ) condition processing, the third boundary condition is selected for the temperature calculating, linking the combustion process inside the furnace with the flow and heat exchange of water inside the water - cooled wall, so the heat absorbing and the influence of the water - cooled wall to combustion process and heat transfer of furnace are explicitly explained
與其它通用的cfd軟體相比,經論文作者所改進的燃燒過程數值模擬軟體的特點在於: ( 1 )能夠結合爐子結構、運行參數及燃料等,調整模型中相應的參數及處理方法; ( 2 )可以靈活的安排網格節點,對某些節點進行特殊處理; ( 3 )在邊界(水冷壁)條件的處理上,溫度選用了第三類邊界條件,把爐內燃燒過程和水冷壁內工質的流動和換熱聯系了起來,使得水冷壁內的吸熱情況對爐內的燃燒和結渣的影響充分體現出來。Through the analysis to these questions the rational boundary of ntms can be better understand. the conclusions are that the rationality of ntms has a lot to do with its goal. the practices of e
結論是:實施非關稅措施的目的與其合理性邊界有很大關系,而執法者對這些措施的具體適用又會對其是否會轉化為貿易壁壘產生重大影響The newmark method is used to solve the panel flutter equations in time domain. the linear flutter boundaries are determined and the effect of temperature on flutter boundaries is analyzed
編制了壁板顫振分析的有限元程序,採用newmark方法在時域中求解了壁板的線性顫振方程,確定了壁板的顫振邊界,分析了溫度對壁板顫振邊界的影響。On one hand, green barrier places a premium on export enterprise lo innovate and create competition advantages and priority ; on the other hand, green barrier brings bad effect to china ' s export trade, such as reducing the speed of export, shrink the export market, lower the economic benefit of export enterprises and pricks up bilateral or multi - lateral friction in trade
綠色壁壘一方面誘發出口企業進行創新,創造競爭優勢和先動優勢;另一方面又給我國出口貿易帶來不利影響:減緩產品出口速度,縮小出口市場空間,降低出口企業經濟效益,加劇雙邊或多邊貿易摩擦。The influences of the western regions landscape and frescoes on the frontier poems and popular forms of narrative literature of the tang time
西域風光和壁畫對唐人邊塞詩與變文的影響In order to overcome the shortages resulted from hypothesis of small deformation in radial symmetry based on thick - wall cylinder, plane stress and uniform pressure about residual stress around cold - expanded hole, a new model was proposed which takes into consideration the effect of split - sleeve, the different states along thick direction of specimen
摘要針對目前在研究冷擠壓孔邊殘餘應力時,大都採用基於厚壁圓筒的軸對稱小變形、平面應力狀態、孔邊受力為均布載荷等假設所帶來的不足,提出了在三維真實模型狀態下,考慮襯套對孔邊受力的影響、試件在厚度方向上的應力差異等因素。分享友人