水動力升力 的英文怎麼說
中文拼音 [shuǐdònglìshēnglì]
水動力升力
英文
hydrodynamic lift-
Urodynamic studies revealed marked increase of maximal urethral closure pressure ( mucp ) - 210 cm h20, caused by decompensation of polyuria
尿路動力學檢查顯示,最大尿道閉鎖壓力明顯升高,達210公分水柱壓;概由於多尿而造成代償現象。The hawk 4 gyroplane is supported in the air by a horizontally mounted airfoil similar to that of a helicopter but unpowered
鷹4旋翼機利用類似直升機的旋翼提供升力,但機頂的水平旋翼無需動力推動。The theoretical calculation method about how to predict the hydrodynamic characteristics of ichthyoid rudder is proposed in this paper
本文提出了一種魚形舵定常升力的水動力性能預報的理論預報方法。Compared to an ordinary rudder, the value of lift coefficient of ichthyoid rudder is about 30 % higher and the maximum rudder angle of it nearly reaches 45 degrees. ichthyoid rudder is a design under such a conception as to effectively utilize the propellers slipstream for rudder action, and featured by having a fish - shaped one - piece construction that is to say - no part of ichthyoid rudder can move in the water
其研究的魚形舵是一個沒有在水下移動的魚尾形剖面單片結構,增加了全舵的剖面拱度,使螺旋槳尾流的折射水量增強,進而增大了水動力的作用,使之比普通流線形舵的升力提高30左右。Based on the " fangsheng - i " robot fish of harbin engineering university auv lab, at first the analysis of the relations of pectoral fin ' s attack angle and lift in vertical plane is done in this paper, using the robot fish ' s hydrodynamic results by the panel method ' s, then setting up the motion model in vertical plane is done. finally animation the robot fish ' s motion in horizontal plane is finished
論文以哈爾濱工程大學軍用智能水下機器人國防重點實驗室的「仿生? 」號仿魚機器人為對象,利用面元法計算的仿魚機器人水動力結果,並分析了垂直面內胸鰭的攻角與升力的關系,建立了垂直面內的模型,根據軸變形模擬了仿魚機器人水平面內的直航和偏航。The effect of reynolds number on rudder hydrodynamic performance is also analyzed. up to the stall angle the computed lift and drag agree well with measurements and other author ' s calculations, whereas stall angle, lift and drag beyond the stall angle are slightly under - predicted. the solver is used to investigate laminar and turbulent separated flows around a 6 : 1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces
應用所開發的求解器,以naca0015翼型舵為算例計算了船舵在不同雷諾武漢理三;大學博士學位論文數下大舵角范圍內的三維粘性流場及水動力,成功地預報了舵的失速角和最大升力,並初步探討了雷諾數對舵水動力的影響;計算結果與現有試驗和計算數據比較,吻合程度相當好,初步檢驗和驗證了該求解器精確模擬粘性流動和計算水動力的能力。The hydrodynamic parameters and mass transfer coefficient are studied in the internal loop airlift bioreactor used in treating wastewater. the hydrodynamic parameters consist of gas holdup, liquid velocity and axial dispersion coefficient
本文從流體動力學和傳質動力學兩個方面考察了用氣升式內環流生物反應器應用於廢水處理的性能。Another based mathematics model about the anchor cable is used for ship - anchor system. the numerical calculation have been worked by programmed in the matlab language. at the same time the influence that the dragging speed of antisubmarine helicopter and the height over the surface of ocean acts on the shape and the tension of underwater cable, and that the current velocity and the diameter of anchor cable acts on the shape and the tension of anchor cable, has been calculated
把建立的水下拖索數學模型和錨索數學模型分別應用於航空吊放聲納探頭?纜繩動力學系統和船?錨系統,採用matlab語言編程進行了數值計算,同時分別計算和分析了反潛直升機拖速、距海面高度對拖索形狀和張力的影響以及海流速度、錨索直徑對錨索形狀和張力的影響。The draft is also good on the power play a stimulating role plates, such as anhui to electricity, such as tin fu thermoelectric have appeared 漲 停 ; in addition, the rehabilitation of agricultural products every day 漲 停 the shock after under the recently also started the plate, such as water in the fishing industry, kang biological, and other days there 漲 停 ; the two sides also offer acupuncture, nam fung chemicals, such as chlor - alkali and jin also 漲 停, the military concept of the space momentum in nuclear science and technology have appeared 漲 停
雖然銀行股處於一定的回調整理局勢,但以海通證券和成都建投及東北證券為首的券商股保持積極的活躍度,紛紛出現漲停;同時在寶鋼股份漲停的激發下,西寧特鋼、武鋼股份、濟南鋼鐵、酒鋼宏興等均都出現較大幅度的拉升,並帶動有色金屬的承德釩鈦、馬宏鋅鍺出現漲停;另外,長江電力的漲停也是對電力板塊起到良好激發作用,如皖能電力、天富熱電等紛紛出現漲停;除此之外,在農產品復盤後天天漲停的激發之下,近期該板塊也開始啟動,如水中漁業、天康生物等出現漲停;還有化工的兩面針、南風化工、錦化氯堿等也出現漲停,軍工概念的航天動力、中核科技等紛紛出現漲停。Fin stabilizer is a kind of active stabilizer, which is designed on the principle of torque counteraction. fin stabilizer applied at present is an angle feedback system which calculate the controlling torque through the fin angle. because the relationship between the lift produced by fin and the fin angle is mainly determined by the hydrodynamic experiment, so there are some defects
目前使用的減搖鰭是一個角度反饋系統,它通過鰭的轉角來計算控制力矩,這樣就存在一些不足之處,因為鰭上產生的升力和鰭角的對應關系主要靠鰭模的水動力試驗來求得。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。Aiming at the problem that existence in the monitoring of simulate disk in local power grid, to enhance the level and efficiency of the electricity dispatch, to improve operation procedures, to change the troublesome work about 6kv line simulation disk, 35kv transformer substation and 6kv substation host cording diagram revision and maintenance from man - power, manual promotion to direct - viewing, real - time and work flow high automation level
針對地方電網「模擬盤」監視中存在的問題,為提高電力調度工作水平和效率,完善操作規程,把煩瑣的6kv線路模擬盤、 35kv變電所和6kv配電所主結線圖的修改和維護工作從人工、手動提升到直觀、實時和工作流程高度自動化水平,實現電力調度日報、月報及日常管理實現規范化、自動化。In the second part, firstly, the mathematical model for predicting hydrodynamic characteristics of varivec propeller under steady or unsteady condition are present, based on the general propeller lifting - surface theory, potential flow theory and green theorem. then, theoretical calculation methods for predicting hydrodynamic characteristics of varivec propeller designed above paragraphs are present, based on the finite basic solution method, the unsteady vortex lattice method and hess - smith method
在理論計算部分,本文首先基於常規螺旋槳升力面理論、勢流理論和格林定理建立了定常和非定常狀態下全方向推進器水動力性能計算的數學模型,然後利用有限基本解法、非定常渦格法和赫斯?史密斯方法對全方向推進器定常和非定常狀態下的數學模型進行了數值離散,接下來針對前面所設計的全方位推進器進行了數值預報。An aircraft powered by a conventional propeller and supported in flight by a freewheeling, horizontal rotor that provides lift
旋翼機在飛行中以常規的螺旋槳來驅動並靠慣性滑行支持的,提供升力的水平旋轉儀The company is making great efforts to build a modern large - scale enterprise with a strong competitive power. with the development of the global economy, we, china national south aeroengine company, have close business relationship with many businessmen at home or abroad, expanding in aeroengine application constantly ; also strengthening civilian product strongly with the market competitive power. its products have influenced among the sky, land, water motive force and satisfied the customers
面對經濟全球化的發展潮流,我們願本著共贏卓越的理念,不斷加強與國際國內企業的廣泛交流與合作,做精做深航空產品,不斷擴大航空動力應用領域做強做大民用產品,不斷提升產品的市場競爭能力,進一步擴大在中小微型動力領域的影響力,實現顧客對空中陸地水上動力的期望與夢想。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。I say " hopefully " because, frankly, i cannot yet see clearly beyond the v - shaped recovery that we are happily experiencing now. the opportunities are certainly there
我只能說期望,原因是雖然本港經濟目前正呈現型復甦趨勢,但我到底沒有水晶球可以預卜上升動力會否長時間持續。Jinxue is a line of regional culture school of learning, it takes shanxi ancient culture as its research object, therefore, it ought to based on the results of past researches, meet learning school construction reqirement, broaden the research field, improve research, level, try their best to reflect jin culture characteristics all around and deeply, so as to develop national culture, push forward advanced culture construction and its development
摘要晉學是以山西古代文化為研究客體的地域文化學科,應在過去晉文化研究的基礎之上,按照學科建設的要求,拓寬研究領域,提升研究水平,力爭全面而深刻地反映晉文化的特色,以弘揚優秀的民族文化,推動先進文化的建設與發展。In addition, the model of interaction of water and temperature between field water vaporization and soil water storage, temperature and millet weight is gotten by field trial. 2. the ammonia volatilizing of fertilizer is suit to the dynamic equation as y = a + bt, the coefficients in the equation are related to the kind of fertilizer, temperature and water content of soil, and the dynamic equation about ammonia volatilization including water and temperature and the is developed
肥料氨累積揮發量符合零級反應動力學方程y = a + bt ,方程中系數與肥料種類、溫度和土壤含水量有關,碳銨a 、 b值均比硫酸銨高,土壤含水量增大, a 、 b值降低,溫度升高, a 、 b值增大,並由此得到含溫度或土壤濕度因子的肥料氨揮發動力學方程,並建立了含水、熱因子的肥料氨揮發水熱耦合效應動力學方程。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。分享友人