fluid flowmeter 中文意思是什麼
fluid flowmeter
解釋
流體流量表-
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。 -
The coriolis mass flowmeter ( cmf ) is widely used in industries, because it has many advantages - high measurement accuracy, being able to measure fluid mass flow directly and measure various parameters of fluid, etc. originally analog signal processing methods are used for cmf, but some companies and institutes devote themselves to digital signal processing methods because they have many advantages over analog methods
科里奧利質量流量計由於其精度高、測量流體范圍廣、可做多參數測量等優點，在工業上獲得了廣泛的運用。原來的科氏流量計的信號處理主要是採用模擬電路，由於模擬信號處理系統存在很多缺點，越來越多的公司和研究機構都投入大量的人力物力來研究數字信號處理方法和系統。 -
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） 。 -
Since it has the advantage of no moving components, impulse signal output, strong medium adaptability, high measurement accuracy, wide measurement range, low - pressure drop, no zero drift and easy to maintenance, it is wide accepted that the vortex type fluid oscillatory flowmeter is ideal flowmeter in the measurement of gas, liquid, steam and mix / corrosive fluid
這類的流量計兼有無運動部件，脈沖數字輸出，計量不受被測流體性質影響，測量準確度較高，量程比寬，無零點漂移，壓力損失小，便於安裝維護等優點，是測量氣體，液體，蒸汽，混合型和腐蝕性流體的理想的流量計。 -
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。 -
Electromagnetic flowmeter, which is based on faraday ' s induction low, is widely used for the measurement of flowrate of conductive fluid in pipes
電磁流量計是基於電磁感應定律的速度式流量計。以往的電磁流量計在0 -
The methods and developing status of flow measurement and physical parameter of fluid, the principle of vortex flowmeter, the theory of ar model spectrum estimation are described at the beginning of the thesis. the author develops a flow measurement system comprising the signal processing circuit and measurement software to measure flow and do qualitative and quantitative to measurement results that gain by count method and ar model spectrum estimation method
論文依次講述了流量的測量方法和發展趨勢，流體的物理參數，渦街流量計的測量原理， ar模型譜估計的基礎理論，並針對渦街流量計設計了信號處理電路和測量軟體，最後對用計數方法和ar模型譜估計方法得出的測量結果進行了定性和定量分析。 -
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。 -
Measurement of fluid flow - methods of specifying flowmeter performance
流體流量測量.流量計性能的規定方法 -
The main content of each chapter is as following. the first chapter at first generally introduced the history and the actuality of flowmeter on the basis of relevant publications search. one of most promising flowmeter - the vortex type fluid oscillatory flowmeter - was selected as research subject
有關各章內容分述如下：論文第一章以大量的國內外文獻為基礎，全面綜述了流量計的發展歷史和現狀，確定以具發展前途的流量計之一? ?旋渦型流體振動型流量計（渦街流量計和旋進旋渦流量計）作為研究內容。
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