順風向 的英文怎麼說
中文拼音 [shùnfēngxiàng]
順風向
英文
down wind-
Her two masts leaned a trifle backward ; she carried brigantine, foresail, storm - jib and standing - jib, and was well rigged for running before the wind ; and she seemed capable of brisk speed, which, indeed, she had already proved by gaining several prizes in pilot - boat races
船上有兩只稍向後傾的大帆，此外還有后檣梯形帆，前中帆，前檣三角帆，外前帆和頂帆。唐卡德爾號在順風的時候可以利用這一套應有盡有的設備。Clairvoyance, clairaudience, dreams, hypnotism, point the way to a better understanding of the history and depth of the human mind and soul
千里眼（遙視） 、順風耳（遙聽） 、夢，催眠，它們都指向一個更深刻理解人類心理和心靈及其歷史的方向。The fleet began to fill away on a northerly course.
船隊開始順風向北航行。Simplified evaluation of along - wind dynamic responses of lattice towers
格構式塔架順風向風振響應簡化計算Based on the analytical model of the generalized force spectra of the first mode of typical lattice towers in along - wind direction, simplified empirical formulae to evaluate along - wind dynamic responses of lattice towers under wind load are proposed in this paper
摘要基於格構式塔架順風向一階廣義荷載譜解析模型，提出了格構式塔架順風向風振響應簡化計算公式，這些簡化公式將求格構式塔架順風向風振響應的復雜積分變為簡便的代數運算。Abstract : based on thestatic wind force factors of a tower and on the root - mean - square of the buffetingdisplacement responses of the tower top, which are measured by wind tunnel tests inlaminar and turbulent field respectively, the static and buffeting internal forces of thetower bottom control sections under its design wind speed are obtained by linearsuperposition method and fem
文摘:基於均勻流和紊流風場中的橋塔模型風洞試驗所測得的橋塔空氣力靜力系數及塔頂抖振響應的位移均方根，採用線性疊加法及有限元法反演，給出設計風速下塔底控制截面的順風向靜風及抖振內力。Hill fire advances rapidly upward and windward on a steep grass slope in dry weather. never underestimate its devastating power
在乾燥的天氣，山火于較斜的草坡上順風向上蔓延速度極快，遠足人士絕不可輕視Analysis on alongwind fatigue of free - standing single rod transmission tower
自立式單桿輸電塔順風向風振疲勞分析On his flag were written four large characters " van leader huang gai "
他的艦隊乘著順風向赤壁駛去。The launch is bearing down ( the port ) at ten knots
汽艇正以每小時十海里的速度順風向港口駛去。Along - wind loading is digitally simulated with the aid of random vibration theory and used as load input of dynamic analysis of wind - excited tower
本文利用隨機振動理論模擬了合肥電視塔的順風向脈動風荷載，並進行了合肥電視塔的風振反應分析。The newmark - p step - by - step numerical integration algorithm is used to calculate the response behavior of system when feed cabin locates at a certain position ( typical location ) and when feed cabin moves along a certain trace ( time - dependent structure )
。 ark d數值積分方法，在時域上分析了饋源艙停留在空間某一位置（典型點）和沿空間某一軌跡運行（變結構）時，系統的順風向風致響應。Further more, power spectrum density ( psd ) of each test section was analyzed, and its experiential formula was given. combined with experiential the formula of coherence function, the mathematic model for calculating the caarc standard tall building ' s wind - induced response was set up
進一步擬合了順風向和橫風向各測點層層風力譜的經驗公式，並給出了以此為基礎的計算caarc標模風振響應的流程，從而建立起完整的標模風振響應以及等效荷載計算的數學模型。According to the fluctuating property of wind, on the stochastic vibration finite element theory, some calculation formulas of the response, including the along - wind response and the across - wind response, are obtained, the ideology of the torsion vibration in the double - tower structure and the ideology of the double - tower structure ' s dynamical wind load are also put forward at the same time. by using the stochastic vibration module of the general finite element program, the paper analyses the performance of the wind resistance more deeply and fully, discussing the influence on the double - tower structure from the diversification of the different component. the variance law of dynamic displacement and wind - induced vibration coefficient is derived through analyzing structure stochastic vibration, so is the effect of several parameters on dynamic displacement, acceleration and wind - induced vibration coefficient
從結構風振的基本理論出發，通過對脈動風功率譜的分析，推導了結構風振響應（順、橫風向）的計算公式，同時提出了雙塔結構的扭轉振動和動力風荷載計算的思想，在結合通用有限元程序的隨機振動模塊的情況下，對雙塔結構的抗風性能作了深入、全面研究，探討了雙塔結構構件截面的變化對其抗風性能的影響，同時探討了順風向風速譜的選取、風速、參與計算的振型數、風與結構耦合作用是否考慮等因素對分析結果的影響，比較了規范風振系數的計算與隨機演算法結構的異同，並討論了原因，得出一些有意義的結論。Numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation. it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source. the flame area which has developed from the fire source is an area of chemical reaction caused by combustion. even if grids in the vicinity of the fire source are made fine, it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface. therefore, we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results. it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall. the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume
運用cfd進行數字模擬，以了解縱向通風隧道內熱煙氣流的特性.通過模擬發現對火源進行模擬非常重要，熱煙氣流特性受火源位置的影響很大，並且對火源模擬方法很敏感.火源生成的火焰區是燃燒引起的化學反應區域.即使火源附近的木垛排列完好，也很難在考慮這些化學反應條件下模擬熱生成區域.建議考慮縱向通風隧道內火焰形狀並對它進行數字模擬.模擬結果與試驗結果非常吻合.試驗證明，在縱向通風隧道內，熱煙氣流從靠近墻體火源處順風向隧道中心蔓延.數字模擬結果發現，火災羽流造成的螺旋上升空氣會在墻體和羽流之間形成一個渦流區Abstract : numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation. it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source. the flame area which has developed from the fire source is an area of chemical reaction caused by combustion. even if grids in the vicinity of the fire source are made fine, it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface. therefore, we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results. it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall. the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume
文摘:運用cfd進行數字模擬，以了解縱向通風隧道內熱煙氣流的特性.通過模擬發現對火源進行模擬非常重要，熱煙氣流特性受火源位置的影響很大，並且對火源模擬方法很敏感.火源生成的火焰區是燃燒引起的化學反應區域.即使火源附近的木垛排列完好，也很難在考慮這些化學反應條件下模擬熱生成區域.建議考慮縱向通風隧道內火焰形狀並對它進行數字模擬.模擬結果與試驗結果非常吻合.試驗證明，在縱向通風隧道內，熱煙氣流從靠近墻體火源處順風向隧道中心蔓延.數字模擬結果發現，火災羽流造成的螺旋上升空氣會在墻體和羽流之間形成一個渦流區In this paper, a simplified method of calculating wind - induced response and design loads of super - high - rise buildings was proposed. coherence properties of wind load on typical tall building were analyzed and the results show that cross - wind loads at different height have strong coherence at vertex shedding frequency, and the coherence function ' s value here is near to 1
首先分析了各測點層合力的相干特性，結果顯示各測點層所受順風向風荷載之間的相干函數基本成單調衰減規律，而橫風向脈動風荷載在漩渦脫落頻率處存在和順風向不同的顯著相關性。This paper uses of the actual mechanics form, cantilever bending stiffness is adopted in the mega structure, however shearing stiffness in the sub structure. based on the complex mode theory, this paper gains the expression of dynamical response of the system based the model of municipal no. l building of tokyo city and analyses the affection of the main parameters ( stiffness and damping ) on the two configurations ( sustaining type and hang type ). the results indicate that the rational stiffness of the sub structure can control the deformation of the mega structure perfectly, but the acceleration of the sub structure increases at the same time
本文採用了更接近實際的力學模型，主結構採用彎曲剛度，子結構採用剪切剛度，利用隨機振動復模態理論，推導了巨型框架減振結構的動力響應表達式，並以日本東京市政一號樓為基本模型，討論了巨型框架減振結構兩種結構形式（座承式和懸掛式）的主要參數（剛度和阻尼）對減振效果的影響，結果表明：與普通巨型框架結構相比，減振結構通過合理選擇子結構剛度，可以較好的控制主結構在順風向脈動風作用下的位移響應，從而提高結構的安全性，但與此同時，子結構自身的加速度響應也有了一定程度的提高。Based on guyed mast fem model of 4 - node space cable element and space beam element, the method to analyze along - wind induced nonlinear oscillation in the time domain is established, which breaks the traditional analysis in the frequency domain using stochastic theory on the linearization premise. and the results of imitation analysis reflect the essential character of guyed mast
在將桅桿結構離散為空間四節點索單元和空間梁單元的計算模型的基礎上，提出了桅桿結構順風向風振響應的非線性時域分析方法，突破了傳統的用隨機振動理論對桅桿結構進行頻域分析的方法，模擬分析結果表明能夠反映桅桿結構的基本特徵。According to the theory of the wind load, the static and dynamic analysis under the along wind load of the main frame and test of comfortable extend are achieved and the static and dynamic analysis of the top structure are carried out according to these foregoing analysis and studies, we have given the mechanic performance of the structure comprehensively and objectively
根據結構抗風理論，實現主體框架結構順風向靜動力風荷載分析和舒適度驗算以及頂部多功能廳結構順風向靜動力風荷載計算。同時上述的這些分析，比較全面客觀地得出了結構的力學性能，指出了該結構的合理性與可靠性，為實際的結構設計施工提供了理論上的依據與參考。分享友人