旋渦計 的英文怎麼說
中文拼音 [xuánguōjì]
旋渦計
英文
swirlmeter- 旋 : 旋Ⅰ動詞1 (旋轉) whirl 2 (用車床切削或用刀子轉著圈地削) turn sth on a lathe; lathe; pare Ⅱ名詞...
- 渦 : 渦名詞1. (漩渦) eddy; whirlpool; vortex 2. (酒窩) dimple
- 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...
- 旋渦 : vortex (pl vortices; vortexes); whirlpool; vemous; eddy; vorticit; backset; swirl; [地質學] nuc...
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In this work, a new dual triangulate bluff body vortex flowmeter was developed, the flux lower limit value of which lower by 50 % that of the old single bluff body vortex flowmeter. the linear correlation of the correlation between the velocity pressures of fluid disturbs wave and that of vortex precession in vortex precession flowmeter was brought to light, and a spectrum phase discrimination method based on fft to remove the effect of fluid pulsating interference on vortex precession flowmeter was advanced
研製出比傳統單鈍體渦街流量計流量下限降低約50的新型雙鈍體渦街流量計;揭示出脈動流中旋進旋渦流量計流體振動特性,並在此基礎上提出基於fft相位判別的數字信號處理方法來消除流場脈動對旋進旋渦流量計的干擾的方法。In the second chapter, the fluid mechanics principle of vortex flowmeter at first was introduced. the classical theory about vortex flowmeter and the method of computational fluid dynamics about flow around body were expanded on, and the model of the single bluff body and the dual bluff body vortex flowmeter were constructed. and then, fvm - finite volume method - analysis software fluent was applied to analyze the flow phenomenon of flow over single bluff body or dual bluff body
然後通過大量實驗和理論分析給出雙鈍體渦街流量計的設計準則:當管徑為d ,鈍體形狀為三角形,則鈍體設計參數為:銳邊寬度= 0 . 26d ,高度= 0 . 34d ,鈍體之間的距離= 1 . 2d (即當兩鈍體寬度相等且鈍體距離等於單鈍體兩列旋渦之間的距離) 。After simulating the model of water hydraulic valves, the velocity distribution, pressure distribution, energy distribution can be obtained and relations between the valve channel and the energy loss, the negative pressure distribution can be analyzed, which offers the theory foundation for designing water hydraulic valves with the high efficiency, low energy loss and low noise
通過對水壓閥模型的cfd穩態和瞬態解析,可以得到水壓閥內流場的速度分佈、壓力分佈及能量分佈,據此定性分析流道結構(速度、壓力、流動的分離與再附壁,旋渦的產生與消失等)與能量損失、負壓分佈等的關系,從而為設計出高效率、低能耗、低噪聲的水壓閥提供理論依據。In this paper, simple reacting flow model in solid - propellant ducted rocket combustor based on eddy break - up model is established. the model is used to simulate the three - dimensional combustion flowfields in an experimental motor. some factors how to affect the combustion efficiency are discussed in the paper, including air intake and gas generator nozzle
本文基於簡單反應的旋渦分裂模型,建立了固體火箭沖壓發動機補燃室內的湍流燃燒模型,並在該模型下對某實驗發動機進行了三維數值模擬,研究了補燃室設計參數包括進氣道出口設計參數和燃氣發生器噴管設計參數對燃燒效率的影響。Vortex precession flowmeter
旋渦進動流量計Early in 1994 when this key project was put into place, the group found out that h
早於1994年這個重點計劃落實的初期,這小組已從旋渦星系m100的觀測中計算出hAn experimental study of the dynamic characteristics of swirlmeter in oscillatory flow
脈動流場中旋進旋渦流量計流體振動特性的實驗研究Based on this discovery, a novel swirlmeter with a strong anti - jamming performance was developed
基於這一結果,研製出抗干擾性能很強的新型旋渦進動流量計。This paper examines the fluid dynamical characteristics of the duct flow in a swirlmeter by using the computational fluid dynamics approach
本文運用計算流體動力學方法研究旋渦進動流量計的流道流體動態特性。( 2 ) base on the complete sample of 178 spiral galaxies in the virgo cluster given by fouque et al. ( 1990 ), the sv orientation distribution of the spiral galaxies with known galactic inclinations is studied
( 2 )利用fouqueetal . ( 1990 )所得的帶有傾角數據的完備的virgo團旋渦星系樣本,對virgo團旋渦星系旋轉矢量分佈進行了統計分析。With computations and analysis, the comprehension on the mixing and combustion process is increased, and some significative results are listed below : a ) there are three recirculation regions and one vortex region in the combustor, and these recirculation regions affect the combustion process deeply, b ) increasing side - arm angle and moving side - air inlet position toward the fuel inlet can improve mixing and combustion characteristics, and increase the combustion efficiency, c ) when the angle between two air - inlets equals to 180
通過計算與分析,增進了對補燃室內摻混燃燒過程的理解,為固體火箭沖壓發動機補燃室設計提供了一些有意義的結果: 1補燃室內的流動十分復雜,存在三個迴流區和一個旋渦區,迴流區對摻混燃燒過程有重要影響; 2增大空氣入射角度、向前移動進氣道出口位置有利於增強頭部迴流區強度,增強摻混效果,燃燒效率上升; 3In the third chapter, the method and choosing principle of the test system component at first were brought out. the component of test device was introduced. and then, the characteristics, such as strouhal number, vortex street strength, vortex street stability and pressure drop coeffi
縱觀全文,本文成功地將cfd技術和實驗流體力學方法應用於新型雙鈍體渦街流量計的研究,並對旋進旋渦流量計的流體振動特性和抗干擾方法進行系統研究,提出了旋進旋渦流量計抗干擾設計的新方法。There are two kinds of vortex type oscillatory flowmeter : vortex flowmeter and vortex precession flowmeter
基於旋渦流體振蕩原理的流量計主要有兩種:渦街流量計和旋進旋渦流量計。The technique of fluid mechanics simulation and the technique of modern fluid mechanics experiment were applied to research on the fluid oscillation characteristics of vortex flowmeter and vortex precession flowmeter
以流場模擬技術和實驗流體力學的相結合的方法,系統地研究了旋渦型流體振動流量計的流體振動特性。In order to overcome those defects, we chose the fluid oscillation characteristics of vortex type fluid oscillatory flowmeter as research subject on the basis of the former achievement
本論文針對旋渦型流體振動流量計小流量信噪比低和抗干擾性能差等問題,確定以流體振動特性應用基礎為主要方向。Specification for whirling hygrometer
旋渦式濕度計規范The assemble criterion of sensor for design was advanced. at last, a method of increasing signal - to - noise ratio and reducing flux lower limit value of vortex flowmeter was advanced. the experiment program was advanced
針對旋進旋渦流量計的理論分析所存在的問題,論文應用fluent軟體對該流量計進行了直接流場模擬研究,分析模擬的結果和誤差,並提出了改善模擬精度的途徑。Under some conditions, vortices are alternately shed from each side of the cylinder, which induces the fluctuating forces acting on the cylinder. it decreases the operating time of the equipment. for the purpose of the long - term reliability and the safety designing of the industrial component and the theory of gas - liquid two - phase vortex street, gas - liquid two - phase vortex street is simulated by commercial software phoenics for the first
工業領域內存在著大量的氣液兩相繞流柱體的現象,一定工況下形成交替脫落的旋渦,誘發柱體受到脈動升力的作用,由此產生的疲勞損傷大大縮短了工業設備的使用壽命,為了促進氣液兩相渦街理論的發展和給工業設備的設計和安全運行提供充分的科學依據。The literature about primary instrument and secondary instrument of vortex type fluid oscillatory flowmeter was summarized. and then, the recently new development of vortex type fluid oscillatory flowmeter and its limits were discussed
介紹了旋渦型流體振動流量計在一次儀表和二次儀表方面研究的情況,指出該類流量計研究中所面臨的主要問題。The vortex type fluid oscillatory flowmeter based on measurement of vortex hydrodynamic vibration generated by specific flow passage, and the frequency of fluid oscillations is in direct proportion to flow rate
旋渦型流體振動流量計是利用流體在特定流道條件下流動時產生的旋渦振蕩,而且其振蕩頻率與流速成比例這種規律來測量流量的流量計。分享友人