擬尾 的英文怎麼說
中文拼音 [nǐwěi]-
The 3 - d complex flowfield of rocket - missile with wings and empennages induced by the interaction between by base jet and the flow around the body has been numerically simulated. the main work is as follows : first, the gordon - mcbride program was developed to make it more friendly and efficient to the users
本文對帶彈翼/尾翼彈箭的三維噴流繞流復雜流場進行了數值模擬,其主要研究內容有:首先,對gordon - mcbride火箭程序作了改進,使改進后的軟體具有了非常友好的人機交互界面。Thirdly, the correlative coefficient is computed between the pressure fluctuation signal of draft tube and the displacement signal of upper guide bearing, the thrust bearing and the head cover, with this the conclusions on the shafts response due to pressure surge in
並與模型尾水管壓力脈動試驗結果進行對比?結合流動模擬試驗以及動力特性計算結果,全面分析?評定機組的實際運行狀況,劃定運行區域,為電站合理調度On the basis of the former two - dimensions and three - components mhd numerical simulation, this paper analyses evolution of the magnetic helicity of various magnetic structures in the magnetotail
摘要在二維三分量mhd數值模擬的基礎上,對地球磁尾不同類型磁結構的形成作磁螺度分析。Second, the imaging model built here has taken into account the tilt modulation, the hydrodynamic modulation, and current modulations of radar cross section. consequently, it has realized the imaging simulation of four kinds of wakes with the same imaging model. third, the orbital velocity of ocean wave was considered as the basic dynamic factor, and the imaging model calculates the influence on raw data by the wave m ovement according to the orbital velocity
該模型的主要特點是: ( 1 )它採用了三尺度復合表面模型的思想來計算海面的電磁散射,考慮了中等尺度波對紋波的進一步調製作用,彌補了傳統雙尺度模型的不足; ( 1 )它考慮了海浪的傾斜調製作用、流體動力調製作用和流場對雷達截面的調製作用,實現了用統一的模擬模型對四種艦船尾跡特徵進行成像模擬; ( 3 )它把海面長波的軌道速度作為基本的動態成分,並依此來考慮海面運動對sar回波信號的影響。The sixth section gives the experimental results in the quasi - steady flow around the caudal fin and mimic the forward swimming using the caudal fin as the propulsor. and then review the speed and track of the robotic fish swimming when locomotion parameters are set in the experiment condition
第六部分通過機器魚的自主游動實驗,初步模擬了機器魚利用尾鰭擺動推進前進,考察了實驗條件下設定魚的尾鰭擺動相關參數的情況下魚的游動速度和尾鰭的擺動軌跡情況。The thesis built the relation between containing water and the properties of trail dam ' s soil by geomechanical properties of trail dam ' s soil ; analysed the seep rule of water in the trail dam ' s field and the change of soakage line. the thesis applied the limited element to analyze the trail dam of baogang by the engineering item in production. it calculates the dynamic and static response about the dam using the numerical simulation method
本文通過大量的尾礦土物理力學性質試驗資料,建立了含水量與尾礦土性質之間關系曲線;分析了水在尾礦壩區的滲流規律和不同標高時浸潤線的變化情況,為分析尾礦壩的穩定性提供依據;結合生產上的工程項目,從包鋼尾礦壩的穩定性研究入手,應用有限元法,通過數值模擬分析了水對尾礦壩的靜力、動力穩定性影響。With the computing program, flow around the square cylinder is resolved at first, and the period of laminar flow is simulated successfully. during the period of vortex street ( re = 100 ), the periodically evolutionary phenomena of the flow behind the square cylinder can be seen
利用計算程序,本文首先對方柱繞流流動進行求解,成功模擬了方柱繞流層流階段的流動和渦街階段( re = 100 )方柱尾流的周期性變化現象。Questions about whether the adsorbent is endurable and whether the adsorption refrigeration equipment has effect on the performance of diesel are answered with theoretical analysis and test. numerical simulation is used in optimum design of adsorbent bed of an adsorption refrigeration prototype which is driven by exhaust heat of gas electric generator
分析了吸附製冷系統是否增加內燃機能耗和吸附劑使用壽命等問題,並採用數值模擬方法,對以燃氣渦輪發電機尾氣為熱源的吸附式製冷樣機,進行了吸附床結構的優化設計。In this study, authors report three hundred and forty _ seven species of coleoptera insects which damage the agriculture and forestry in the northeast area of china. the insects which belong to thirty _ nine families have been given a detailed description of the specific distribution and feeding character in order to provide a scientific evidence for many workers of the agriculture and forestry and plant _ protector. in this paper, twenty _ three families are discussed that is cicindelidae, carabidae, hydrophilidae, staphylinidae, dytiscidae, elateridae, silphidae, histeridae, corynetidae, buprestidae, ostomatidae, nitidulidae, cybocephalidae, catogenidae, sivanidae, mycetophagidae, lathridiidae, ptinidae, bostrychidae, anobiidae, lyctidae, tenebrionidae, meloidae, totally eighty _ seven species
本研究作者報道了東北地區危害農業、林業的鞘翅目昆蟲347種,它們隸屬於39科,作者對這些種類的分佈及其取食特徵進行了詳細的描述,以期為廣大農業、林業及植物保護工作者提供科學依據.本文論述了23科,即虎甲科、步甲科、牙甲秒、隱翅蟲科、龍虱科、叩頭蟲科、葬甲科、閻甲科、陷附郭公蟲科、吉丁蟲科、谷盜科、露尾甲科、方頭甲科、扁甲科、鋸谷盜科、小覃甲科、薪甲科、蛛甲科、長蠹科、竊蠹科、粉蠹科、擬步甲科、芫菁科共87種。Abstract : in this paper, we obtain the point estimetions and the approximate confidence interval of the environment factor of the lognormal distribution based on the censoring samples. the accuracy of the approximate confidence interval is studied by the simalation method
文摘:本文導出了壽命分佈為對數正態分佈時基於截尾樣本環境因子的點估計和近似置信限,對所給近似置信區間作了模擬研究。On the basis of cold gas simulation, a numerical simulation of two - phase turbulent flow was performed employing an eulerian - eulerian approach and k - - a. p. turbulent model. the accuracy of numerical simulation was verified and evaluated by the experimental result
在冷流模擬的基礎上,對燃燒室尾部的兩相湍流流場進行了數值模擬,數值模擬採用雙流體模型和k - - a . p .湍流模型。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。In this paper, we study the type - i life test of lognormal, normal and weibull distributions with large numbers of samples, get the approximate confidence regions of the parameters, and do many stochastic simulations on the theoretical basis with computer
本文研究了大樣本定時截尾壽命試驗下對數正態分佈、正態分佈和weibull分佈參數的近似置信域,並在理論基礎上進行隨機模擬。Methods 1. experiments were conducted on 40 sprague - dawley male rats, divided into 4 groups : suspended for 7d, control of 7d and suspended for 2id, control of 2id
方法1 、採用尾懸吊模擬失重,分為懸吊7d和21d及相應對照4組,每組10隻健康雄性sd大鼠,共40隻大鼠。Based on an engineering background, through numerical simulation of the flow field in the hp turbine of the energy efficient engine ( e3 ), the article research the unsteady flow in a transonic turbine stage, the unsteady phenomena in the stage include the shockwave, wake, shedding vortex, endwall vortex, passage vortex and leakage vortex, etc. there are two shockwaves generated on the vane the tailing edge, one on suction side is named moving shockwave, and name another on pressure side steady shockwave
本文首先對于研究的意義和國內外研究的現狀做了簡要的介紹,再從某工程背景出發,通過對e3發動機高壓渦輪內流場的數值模擬,研究了干涉的周期性的問題,以及渦輪級內常見的非定常現象:激波、尾跡、脫落渦、根腳渦、通道渦、漏流渦。導向器尾緣會出現兩道激波,在吸力面的激波可稱為「運動」激波,壓力面的激波可稱為「定常」激波。Then, the capacities of round - off method, two probable value method ( tpvm ), shift and compensate phase feeding method ( scpfm ) and shift compare and compensate phase feeding method ( sccpfm ), are compared in improving the accuracy of beam pointing
接著,通過模擬實例比較了舍尾法、二可能值法、遞推補償饋相法、遞推比較補償饋相法等幾種提高波束指向精度方法的優劣。Enhanced unsteady and nonlinear rotor wake model for real - time flight simulation
一種適合飛行模擬應用的非定常非線性旋翼尾跡增強模型The software designed for the system is validated by experiments and proved correct. the system can s imulate the real air - stream and put it on missile ' s wings to make them work under the same force environment as the real spread process, so the relationship of explosive stuff and attack angle can be calculated
本文所設計的監控軟體已通過實際系統的驗證,說明整個系統的設計是合理正確的,能夠真實的模擬力矩,產生一種類似真實氣流阻力的載荷,並將其正確施加於彈翼(尾翼)上,使彈翼(尾翼)能在與展開過程中實際受力相同的狀態下工作。When studying the network performance, flow control and resource provisioning of communication networks, traffic model plays a very important role. the recent studies show that the date network traffic is self - similar, so the markovian model, which describes telephone networks accurately, is not suitable for date networks. the self - similarity of the network traffic has severe impact on flow control and queuing analysis in date networks, therefore it has received significant attention. in this paper, g m 1 queuing model is used to analyze the queuing performance of generic variable length packet networks for the first time. the self - similar traffic is generated by multiplexing a large set of independent pareto heavy - tailed interarrival on off sources. the simulation results show that the heavy - tailed traffic results in queuing performance deterioration for variable length packet networks, which is in accordance with the analytical results for atm switches
業務量的自相似特徵顯著影響網路的流量控制與排隊分析,已經引起人們的極大重視。採用g m 1排隊模型對分組長度可變的網路的排隊性能進行了分析和模擬,其中自相似業務量是通過疊加大量獨立的到達間隔為pareto重尾分佈的on off源來生成的。模擬結果表明,自相似業務量導致網路的排隊性能劣化,這與有關文獻對atm交換的分析結果一致。Numerical simulation of unsteady vortex in the wake of cascade flow
葉柵流場尾跡中非定常渦系的數值模擬分享友人