波浪統計 的英文怎麼說
中文拼音 [bōlàngtǒngjì]
波浪統計
英文
wave statistics- 波 : Ⅰ名詞1 (波浪) wave 2 [物理學] (振動傳播的過程) wave 3 (意外變化) an unexpected turn of even...
- 浪 : Ⅰ名詞1 (波浪)wave; swell; billow; breaker 2 (像波浪起伏的東西) things undulating like waves 3...
- 統 : Ⅰ名詞1 (事物間連續的關系) interconnected system 2 (衣服等的筒狀部分) any tube shaped part of ...
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 波浪 : wave
- 統計 : 1 (對有關數據的搜集、整理、計算和分析) statistics; census; numerical statement; vital statistic...
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Part i : since the study about breaking onset criteria base on the downward acceleration or on the wave slope shows great discrepancy, the models that estimating breaking probability and whitecap coverage according to these two. criteria are problematic
第一部分:因所採用的動力學或波陡判據的不確定性和海浪譜四階矩的難以確定,現已提出的關于風浪破碎率和白浪覆蓋率的統計模式有一定的不確定性。The first part is a statistical study about the probability of wave breaking and the fraction of sea surface covered by breaking water ( ie. whitecap coverage ), while the second part is a dynamical study about the influence of nonuniform current fields on the breaking of short wind waves
本文內容包括兩個部分,第一部分是風浪破碎率和白浪覆蓋率等破碎統計特徵量的統計學研究,第二部分是非均勻流場對短波破碎影響的動力學研究。Under the assumption of linear ocean waves, and in the light of the theoretical framework about the probabilistic distribution of wave characteristics ( sun fu 1988 ), several probabilistic distributions of wave characteristics that is necessary for the estimation of breaking probability and whitecap coverage are derived. afterwards, the models of breaking probability and whitecap coverage are set up with these distributions in addition to the kinematical criterion
在線性海浪假設下,基於孫孚( 1988 )關於三維海浪要素統計分佈的理論框架,具體給出二維海浪波峰處質點水平速度和表觀相速的聯合分佈等分佈函數,在此基礎上,根據運動學判據,分別建立起風浪破碎率和白浪覆蓋率的理論模式。On the other hand, various study in recent years about the kinematical breaking criterion show consistently that this breaking criterion persists under different conditions. therefore, in this thesis, a new set of models about breaking probability and whitecap coverage is set up using this breaking criterion
另一方面,近年來對于波浪破碎判據的研究表明,破碎的運動學判據是最可靠和最確定的判據,因此,本文採用運動學判據建立風浪破碎率和白浪覆蓋率的統計模式。This paper applies ittc single - parameter ocean wave spectrum to simulate a random long - crested ocean wave according to statistics superposition theory and real - time simulate disturbance on the ship by random wave. it simulates roll and pitch of the ship in random wave in the time domain and gains roll angle ( t ) and pitch angle ( t ) signal of ship rolling movement
本文根據統計疊加理論,採用ittc單參數標準海浪譜模擬模擬實際的長峰波隨機海浪,進而實時模擬長峰波隨機海浪對船舶的隨機擾動,對船舶在海浪中的橫搖和縱搖運動進行了時域模擬,得到船舶搖蕩運動的橫搖角信號( t )和縱搖角信號( t ) 。In order to obtain a complete and quantity evaluation for navigation and fishing operation in stormy weather, the paper gives a practical method for eveluating and sets up a evaluated equation in which many factors are considered
摘要通過對我國主要海洋漁場東、黃海波浪的統計分析,選出適用於我國海區的風浪譜,並以此為基礎給出漁船在不同狀態下的運動響應方程。Based on data collected from east china sea, the waves are calculated and analysed statistically, therefore as obtained the relation between wave height and significant period as well as average period
摘要根據實測數據對我國主要漁區(東、黃海)的波浪進行了統計分析,得出適用於該海區的有效波高與有效周期及有效波高與平均周期的統計關系式。Submerged dyke is a common offshore structure, which is widely used for band protecting and silt promoting engineer and etc. however, few research studies are done upon such a problem home and abroad and even the accomplished results are not satisfying, which cannot be used for real projects, and in most cases, they will have to depend on the results of experiment
然而,目前國內外對潛堤的研究很少,研究的成果也很不成熟,難以應用到實際工程設計中,在很多時候,還需要藉助於物理模型試驗,因此,本文結合勝利油田保灘促淤新技術研究項目,對潛堤波浪力以及透射特性進行了深入系統的研究,力求揭示其內在規律,期望能獲得有實際應用意義的研究成果。From the study results it is showed that turret hole position near the forward of the midship has less effect to the ship girder strength and it is more reasonable using probabilty statistics method to estimate the extreme value of wave bending moment, by which the first approximate value of hull midship section modulus can be determined
研究結果表明:轉塔開孔位置在舯前附近對船體總強度影響不大;波浪彎矩極值用概率統計方法估算更為合理;船體結構剖面模數的第一近似值可用波浪彎矩設計極值等來確定。In this dissertation, the progress in the researches of spatial coherence of random waves is reviewed. based on this, studies have been carried out for the statistical characteristics of crest lengths and their influence on vlfs
本文回顧總結了近年來國內外有關海浪空間特徵量統計研究的進展,並在此基礎上,開展了隨機海浪波峰長度統計特徵及其對海上結構物影響的研究。A brief introduction of synthetic aperture radar ( sar ) and the application of sar image data in the research of crest length distribution is introduced. the method to compute the action of random waves with different crest lengths on vlfs. is also reviewed
對星載合成孔徑雷達及其在波峰長度統計特性研究中的應用以及不同波峰長度海浪對超大型海上結構物的作用作了一個簡單的介紹,闡明了下一步的研究工作的思路。From the situ - observation data of shallow and deep water regions at the coastal zone, it is shown statistically that the occurrency of the coupled ocean waves is more than those of the wind - induced waves and swell. the ratio of the coupled ocean waves at the yangtse river estuary ( especially at shallow sea region ) is nearby 70 % of all the ocean waves, for instance at the observation station dajishan
近岸(淺水)波浪測站和深水的波浪觀測資料統計表明,混合浪的出現均大於純風浪和純涌浪,特別在淺水區域,例如大戟山海洋站,混和浪所佔的比率接近70 。We have made a full theoretical analysis of the wave property and the wave parameters of the flap - type wave generator in the towing tank of our school, and confirmed that should make the factor that the performance of the wave generator give play to normally to influence. in allusion to that the old wave generator can not simulate sea wave, upgrade and transform to this system change the control computer system and install additional d / a change card, redesign the wave control interface and transmission means of control signal, give up the disk machine that can not be used, make the wave - making control voltage signal that has translated direct input the wave controller, make wave controller to make waves through servo system
對我校船模水池原有的搖板式造波系統的性能進行了理論分析,針對水池原有造波機系統模擬海浪的不足,對該系統進行升級與改造,更換了主控計算機並加裝d a轉換卡,重新設計了造波控制信號的介面與傳輸方式,捨去了原系統中現已淘汰的磁盤機,使轉換后的造波控制電壓信號直接輸入到造波控制器中,再由造波控制器通過液壓伺服系統驅動造波板進行造波。Besides, pid control algorithm is introduced and the velocity closed - loop controller is designed on the basis of dynamic model for the train. furthermore, according to kunming world ' s fair route data, the ato system with pid controller is simulated. it shows some disadvantages, and so the predictive control algorithm is brought forward to realize velocity closed - loop control
在已有的列車運動模型基礎上,採用pid控制演算法,設計了列車的速度閉環控制器,結合昆明線線路數據,進行了基於pid控制器的ato系統模擬分析,發現採用pid控制器控制時,列車運行曲線呈波浪形,當遇到坡道或者外界干擾時速度和加速度曲線會出現尖峰現象。Statistical analysis and study of basic characteristics on wind and ocean wave in the yangtse river estuary are carried out to rich the knowledge of the ocean waves in the yangtse river estuary
對自記波浪數據得出的各波浪要素值進行統計分析、研究;對其雙峰譜型海浪統計性質進行了分析研究。In period of the eighth five - year plan of china government, correlated and statistical analyses were carried out by nanjing hydraulic research institute in terms of the situ - observation data of winds and waves and historical synoptic chart in order to the dredge of the sea - route of the yangtse river estuary, and empirical relations between wave and wind velocity and between wave and wind region
進入「八五」期間,為整治長江口深水航道需要,南京水利科學研究院曾對引水船測站1960 - 1980年實測風與浪的資料進行過相關分析,結合歷史天氣圖進行的概率統計分析,得出了波浪與風速、風區的經驗關系。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。Design procedure of u - shaped anti - rolling tank system is established, and program of scale design for tank is summarized, and an innovation selecting the natural frequency of controlled passive anti - rolling tank is put forward according to variation range of wave frequency, the natural frequency of rolling of a ship and other influencing factors, and causes of formation of tank damping and motion state of water in tank are studied, calculation formula of the u - tube tank damping and design method of tank damping configuration are given, and the influence of tank vertical location within the ship on ship parameters, stabilization performance of tank and water motion in tank is studied
建立了完整的u型減搖水艙系統設計程序;總結了u型減搖水艙尺度設計;提出了根據波浪頻率變化范圍、船舶固有頻率變化范圍和其它影響因素,選取可控被動式減搖水艙固有頻率的新方法;分析了u型減搖水艙阻尼的形成原因,給出了估算水艙阻尼和設計水艙阻尼結構的方法;研究了減搖水艙在船舶中的垂直位置布置對船舶參數、水艙減搖性能和艙內流體運動性能的影響。The realization of this scheme not only can improve the working and living condition on the platform but also can prolong its operational life span. this is bond to bring huge economic profit to offshore engineering, so it has a promising future. to validate the effectiveness of this vibration control method experimentally, a real control system is made to control the vibration of an oil platform model under simulated wave loadings and the experiment will be conducted in the next term
根據理論分析結果,本文後面又針對一個近海平臺的實驗模型給出了該模型在模擬波浪載荷作用下的振動控制系統設計方案,並進行了系統設計,用於將來的實驗模型振動控制實驗,以驗證文中所設計變剛度調諧質量阻尼器對由波浪載荷引起的平臺振動的控制效果。Depending on the numerical model proposed, the effect of accelerations of soil skeleton and porous fluid on the dynamic response of elastic seabed is examined. it is possible that the amplitudes of effective stresses in large - thickness seabed to high - frequency waves would be underestimated in some regions if the accelerations were overlooked. the responses of layered seabed, seabed with gentle slope and the seabed unde
根據所提出的廣義blot固結理論計算模型,通過線性數值分析考察了加速度項對海床動力響應的影響范圍及影響程度,指出對于高頻波浪下的大厚度彈性海床,忽略加速度項可能低估某些范圍內的有效應力幅值,而傳統的加速度作用判別準則並不總是成立的。分享友人