水動力波 的英文怎麼說
中文拼音 [shuǐdònglìbō]
水動力波
英文
hydrodynamic wave-
In consideration of studying island coast hydrodynamic factors is in order to build breakwater engineering, design waves, astronomic - tide and storm - tide which increases water level are computed to offer design parameters, discuss and analyze the influence of engineering safety aroused by those factors
考慮到研究海島周圍海岸動力因素的目的是為了建設海島工程,還進行了設計波浪以及天文潮、風暴潮增水的計算,分析了這些因素對工程安全性的影響。Abstract : propagation characteristics of r wave in a pavement structures are analysed in this paper. based on the propagation characteristics of r wave, the horizontal propagation wave is simulated by using r wave, the vertical propagation wave is also simulated by using body wave in calculating dynamic response of pavement structures. the availability and accuracy of dispersion curves measured by sasw in pavement structures is analysed by using the presented method used to calculate dynamic response
文摘:利用有限單元法分析了道路結構的r面波傳播特性:在深度方向上衰減較慢,傳播較深,波動性大.提出了在道路結構動力響應計算中,利用面波來模擬水平向傳播波,利用體波來模擬豎直向傳播波.通過算例來驗證該方法的可靠性和精確性,並利用這一動力響應計算方法分析了道路結構表面波測試中所獲彌散曲線的可靠性And the explicit finite difference method, the combining method of the central difference method and newmark s constant average acceleration method, and the transmitting boundary are used. by comparing the acceleration determined by the several methods of the displacements or velocities, a computing method of acceleration employed the one side difference of velocity is more practicality in this research. corresponding to normal incidence of the body waves, p waves or svwaves, and rayleigh surface waves, two two - dimensional finite difference programs are compiled to compu te the dynamic response of two - phase media
以土力學模型為基礎,利用以土骨架和孔隙流體的四個位移為基本未知量的數值方法去模擬二維飽水介質中的地震波傳播,採用了顯式差分方法(中心差分法和newmark常平均加速度法結合)和透射邊界,通過比較利用幾種差分格式求解的加速度結果,發現一種用速度單邊差分求解加速度的方法在本文研究中較為實用,分別編制了體波( p波或sv波) 、 rayleigh面波輸入時求解兩相介質動力響應的兩個二維數值分析程序。The papers whose research object is the 7 - floor frame - structure with isolator - seismic layer, in which the isolator - seismic layer adopt some standard interlayer rubber isolator. by establish a 3 - dimension finite - element modal and use the a nalysis soft - ansys, we can make dynamic analysis on the structure. by analyses we can get some response characteristics of the structure sparked by the normal and rarely earthquake of 8 - degree fortify intensity, by the double - horizons seismic and by the vertical seismic
本論文設計了一7層的具有隔震層的框架結構並以此為研究對象,其中隔震層採用標準件的夾層橡膠隔震墊,通過建立三維有限元分析模型,運用大型有限元分析軟體? ansys對結構進行動力響應彈塑性時程分析,得出了結構在8度設防烈度下的常遇水平地震和罕遇水平地震激勵下的響應特性、在雙向水平地震波激勵下結構的響應特性和在豎向地震波激勵下結構的響應特性。Because the relationship between the lift on the fin and the fin angle is gotten by the static hydrodynamic experiment, which has great error, especially dynamic hydrodynamic experiment, the control torque gotten by the experiment can not counteract the wave torque well and the stabilization result is not perfect
而鰭的水動力試驗存在著很大的誤差,特別是在動態條件下,鰭的水動力特性測試更困難,所以這種通過計算求得控制力矩的方法產生的鰭升力無法很好地抵消波浪力矩,因而影響了減搖效果。So, optimization of breakwater planning is of great practical value and should be resolved immediately. at first, the paper narrates the development of numerical modeling, which includes shallow water dynamics theory and method, and compares the boussinesq model and mild - slope equation model. the purpose is to select one model that best fit for wave calculation in harbor engineering
本文首先綜述了波浪數值模擬的發展概況,其中包括淺水動力學的常用理論和方法,並詳細比較了目前使用較多的boussinesq模型和緩坡方程模型,其目的是選擇其中較為適合港區工程波浪計算的模式,並將其作為優化模型的驗證或用於適應度計算。Big error exists in the hydrodynamic experiment, especially on dynamic state ; it is more difficult to test the hydrodynamic property of fin stabilizer. so the lift comes from this kind of control method ca n ' t counteract the wave torque perfectly, thereby affecting the stabilizer ' s function
由於鰭的水動力試驗有很大的誤差,特別是在動態條件下鰭的水動力特性測試更是困難,所以這種控制方法產生的鰭升力不能很好地抵消波浪力矩,從而影響了減搖效果。The main achievements of the thesis include : 1 the model design of abyssal aquaculture cages ; 2 the hydrodynamic characters of the cages under the action of pure current in the states of floating vs submerging ; 3 the hydrodynamic characters of the cages under the action of pure wave in the states of floating vs submerging ; 4 the hydrodynamic characters of the cages under the joint action of currents and waves in the states of floating vs submerging ; 5 the effects of currents and waves on the exciting forces and motion of the gravity cages
漂浮狀態和下潛狀態相比,在單純流作用下,網箱的水動力特性; 3漂浮狀態和下潛狀態相比,在單純波浪作用下,網箱的水動力特性; 4漂浮狀態和下潛狀態相比,在波浪水流共同作用下,網箱的水動力特性; 5By calculating instability factor in research area, this paper gives some corresponding suggestion. this paper shows engineering instability around instrument foundation and coupling relation to the circumjacent seabed, and research the dynamic response between wave and seabed, and enriches the research content of instability of seabed around instrument foundation and give some appropriate suggestion to foundation planning of ocean engineering, also it prevents instrument, facility and property of state from losing and risking
這篇論文揭示了構築物地基土的工程穩定性及與周邊海域互動禍合關系,研究了淺水區構築物底床在波浪等水動力作用下的動力響應,豐富了構築物周邊水下底坡穩定性研究的內容,為海上工程設施的地基設計提供了良好的理論指導性建議,對保障海上安全生產、保證海洋設施的完整及使國家財產免受損失也有重要的現實意義。One of the key techniques in swath design is the prediction and optimum design of the hydrodynamic performances ( resistance and propulsion, seakeeping, maneuverability ), whereas the resistance prediction is the most important task of hydrodynamic performance prediction
小水線面雙體船( smallwaterplaneareatwinhull , swath )船型設計的關鍵技術之一是其水動力性能(快速性、耐波性和操縱性)的預報和優化設計,而其靜水阻力預報是其快速性預報的重要內容。The environment of yangtze estuary tidal flat is effected by the interaction of sea and land so that the effect of tide hydrodynamic is intensity and complex
長江口濱岸潮灘環境在鹹淡水交替、出露和淹沒交替、沖淤交替等海陸交互作用的影響下,波潮流水動力作用強烈而復雜。The variation of coarseness and fineness of the component particles in baijiaziu profile and mafangtan profile is caused by river impetus of weihe river, including runoff volume and velocity of flow, which is closely related with climatic factors in guanzhong basin, such as precipitation, temperature and rainfall
白家嘴與馬坊灘河流沉積物剖面粒度變化與渭河水動力變化直接相關,而渭河水動力條件又與渭河流域區域氣候變化有關。因此,粒度在剖面上的變化實質上是氣候波動的結果,利用其變化可重建河流沉積物形成以來的水文、氣候環境的演化歷史。It is found out that both depth and forward speed have considerable effects on hydrodynamic coefficients of ship
數值結果顯示了水底效應對航行船舶水動力的影響,為進一步研究淺水航行船舶的耐波性提供了基礎。Comparisons are made between present method and published results for a wall and non - wall sided circular cylinder in heave and sway. theoretical and numerical results for two - dimensional wave generated by rocker flap wavemaker are also given. in all cases the comparisons are excellent
作為算例,文中分別計算了圓柱與水面直交和斜交時的水動力系數以及搖板造波問題的速度勢,計算結果與文獻值和理論值符合的較好。In general, the upward amplitude curve " curvature is larger, and it changes quicker. on the contrary, the downward is smaller and slower ; because the flare force contains the square of the wave elevation velocity, it results in an difference between the flare force frequence and the associated moving frequence ; the flare force decreases the downward amplitude of heaving oscillations ; the speed of ship has an ignorant effect on the peak values of three calculated values, but there is an obvious effect on the oscillating frequence ; the wave amplitude has an effect on the ship motion, and there is an linear relation between the oscillating amplitude and the wave amplitude on the whole. by the way, there are some experiences and lessons according to the progress calculation : before the calculation of the ship motion, we should checkout the balance in a calm water firstly, namely, the whole displace of ship and the longitudinal position of the center of gravity must be consistent with the draft in calm water, or else, the calculation may show the " floating " phenomenon ; the mixed language programming has a lot of virtues, but it exists a fatal limitation - the debug of dll
研究表明:在某些頻率范圍內相關水動力系數基本不隨吃水變化,只有超過某一頻率后水動力系數的值才會出現差異;在橫搖方向,水動力系數並沒有隨著吃水的變化發生規則變化,而是出現了波動現象;近船首剖面的水動力系數計算表明,水動力系數的波動非常大,並遠遠偏離了平均位置的水動力系數值,值的變化速率也不盡相同,總的看來,上振幅曲線曲率較大,變化較快,下振幅曲線曲率較小,變化較慢;外飄力和波面運動的速度的平方項有關,導致其振動頻率和相應運動方向的頻率不同;外飄力使升沉向下運動的幅值減小;船速對三個計算量的峰值影響甚微,但對振動頻率有明顯影響;波幅對船舶運動的影響是明顯的,船舶運動的幅值基本上和波幅成線性關系。The analyses of the calculated current fields, wave fields and suspended sediment distributions under normal or typhoon weather show that the model system can preferably reflect hydrodynamic fields and sediment distributions in the yangtze estuary
分析流場、波浪場以及正常和臺風天氣下的懸沙場的計算結果,表明該模型系統能合理地反映長江河口區域的水動力場和泥沙場的分佈。Based on the commonly used strip theory with the extension of taking into account the instantaneous variation of the wetted hull surface during the motion and its effects on the ship hydrodynamic characteristics, this dissertation mainly calculates the ship motions and loads in waves in time domain and elementarily investigates some nonlinear characteristic of ship motion and hydrodynamic coefficient. it is hoped that the research had an engineering value for the predication and evaluation of seakeeping performance in the concept ship design stage
本文基於擴展的切片理論,計入船體運動時濕表面的變化及其對船體流體動力性能的影響,在時域內計算了船舶在波浪中的運動和載荷,並對船舶水動力系數及運動中的一些非線性因素進行了初步的探討,本文的研究對船舶設計階段的耐波性能評估具有工程實用價值。Using 2 - d strip method and the high - speed slender body theory, the heaving motion responses in regular wave of ship with combined appendage are computed. the results are compared with the results of naked ship hull, and the anti - pitching effect of combined appendage is validated. a method of optimizing the seakeeping is provided from the aspect of the ship hull
因此本文針對船舶耐波性能的優化,提出了一種減縱搖組合附體,將半潛艏和艏鰭安裝在常規單體船上,初步闡述了半潛艏和艏鰭的水動力作用機理,並按照二維切片法和高速細長體理論計算了加裝組合附體后,船舶在規則波中的垂向穩態運動響應,與裸船體的結果進行了比較,驗證組合附體的減搖效果,從船體本身出發提供了?種優化船舶耐波性的方法; 3Analytical solution to the interaction between linear water waves with a rigid vertical porous cylinder is derived
導出了線性波浪作用於上部可滲透的直立剛性圓柱體上的水動力的解析解。The numerical simulation is an effective method. the main task of this dissertation is to establish a hydrodynamic and pollutant transport model, and to simulate the tide field and concentration field of hakata bay : ( 1 ) dispersing the long - wave equation on interlaced grid by adi method, a two - dimension hydrodynamic model is established to simulate the tidal flow in hakata bay under the effects of m _ 2, s _ 2, o _ 1, k _ 1 tide
本文的主要工作是建立一個深度平均的二維水動力及污染物擴散輸移的數值模型,並對一實際海灣的潮流場及濃度場進行數值模擬: ( 1 )用深度平均淺水波動方程為控制方程,採用迎風adi有限差分方法(交替方向隱式法)在矩形交錯網格上離散潮波方程,建立了一個二維潮流數值模型。分享友人