尾部壓力 的英文怎麼說
中文拼音 [wěibùyālì]
尾部壓力
英文
tail pressure-
2. based on the results of experimental data of the tailrace surge tank of yi xing pumped - storage station in jiangsu province, this research investigates the methods for the head loss coefficients of throttled surge tank with linking pipe by means of the method which incorporates experimental results with theoretical analysis
結合江蘇宜興抽水蓄能電站尾水調壓室水力模型試驗成果,採用理論計算與模型試驗結果相結合的方法,對有連接管的阻抗式調壓室局部水頭損失系數的計算方法進行了討論。The top end bracket shall be fitted with a stainless steel lifting bail and shall be capable of supporting the combined weight of the pump and motor
頂部尾軸承架應該配置不銹鋼吊環,應該能夠支撐泵和電機的總重量的壓力。The top end bracket shall be fitted with a lifting bail and shall be capable of supporting four ( 4 ) times the combined weight of the pump and motor
頂部尾軸承架應該配置吊環,應該能夠支撐泵和電機的總重量四( 4 )倍的壓力。In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source
摘要基於李家峽水電站雙排機組振動的現場試驗研究,並且針對傳統頻譜分析方法傅立葉變換( fft )對于非平穩信號已力不從心這一缺陷,利用小波分析方法在時域和頻域上同時具有良好的局部化性質,通過對開停機這一典型非平穩過程信號進行小波及小波包分析,將其分解到不同頻帶內,獲取微弱信息和提取優勢頻率,並對其作振源分析,得出開停機初始時刻因水流不穩均出現強烈的振動現象,且低頻段信號能量最大,開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。The main work in this paper includes three parts : the theory research on partially - cavitating and super - cavitating axisymmetric bodies, the numerical computations and experimental investigations on partially - cavitation and super - cavitation on axisymmetric bodies. after finishing the study of theory and experiment on the partially - cavitation and super - cavitation for axisymmetric body, i use the potential flow theory to build the mathematical model on the partially - cavitation and super - cavitation for axisymmetric body. many cavity wake models, such as pressure recovery close model, riabouchinsky model and re - entrant jet model, are studied seriously
本文在深入研究了回轉體局部空化與超空化理論及實驗結果的基礎上,基於勢流理論,建立了回轉體局部空泡和超空泡流場的基本數學模型,通過對kinnas和fine 、 uhlman以及jiedang和gertkuiper等人基於二維水翼提出的壓力恢復閉合模型、鏡像板模型和回射流模型等空泡尾流模型進行了逐一的研究分析,發現其中的壓力恢復閉合模型較適用於模擬回轉體空泡尾部流場,並選用此空泡尾流模型作為求解回轉體空化流場正問題與逆問題的數學模型的組成部分。The lid of this sterilizer is installed with safety valve, exhausting valve, exhausting valve which can keep safety
滅菌器蓋上裝有安全閥、放汽閥和壓力表,能有效釋放過高壓力,確保安全可靠。放氣閥尾部備有金屬軟管,使排放冷空氣合理方便。Var and stress testing model can measure this tail risk, therefore, combined with delta - method, var is the efficient model that can be applied to measure chinese security portfolio market risk
股票收益率呈現出厚尾特性, var及其壓力測試模型能很好的計量投資組合的尾部收益及風險,因而結合了var的方差模型是適合於我國證券投資市場風險計量的有效模型。Lastly, previous vane are analysed by fluent, we calculate the pressure distribution chart and report chart of each wing form, then alter the torsion angle and the airfoil form of the vane respectively, finally ascertain the influence curve of the torsion angle and the airfoil form of the vane on which act the lift power
最後,通過fluent對設計出的葉片分析,得出其壓力分布圖和報告圖。然後從改變葉片的扭轉角度和翼型兩個方面分析其對升力和阻力的影響。得出葉片的扭轉角和翼型對升阻比的影響曲線,在文章的結尾部分估算了無人機的一些性能參數。An experimental study on the aerodynamic characteristics of new concept car is conducted by model wind tunnel test, covering the pressure coefficient and wake vortices on longitudinal symmetry plane, as well as aerodynamic forces and moments under different yaw angles
摘要用模型風洞對新概念車在不同橫擺角下縱對稱面上壓力系數、整車氣動力和氣動力矩的變化以及縱對稱面尾部流態分佈進行了試驗研究。In the second part of this paper, principle, method, potential ' s choose and use in eos of molecular dynamics ( md ) simulation was narrated. to conduct an experiment will spend much money and many times, so the theory calculation of eos is important. in the end we use md to calculate the eos of argon and the results is agreement with the experiment ' s results
在本文的第二部分,著重闡述了分子動力學模擬的原理、方法、對勢的選取和它在狀態方程計算中的應用,在實驗需要大量的時間和費用的情況下,狀態方程的理論計算更是實驗的必要補充和理論指導;在第二部分的結尾運用分子動力學模擬對惰性氣體氬進行了理論計算,所得結果與實驗在低壓部分符合的很好。On the rotor blade pressure surface, the dominant frequencies of unsteady surface pressure are the up - stream blade wake passing frequency and its harmonics, and the amplitudes of pressure fluctuations decrease from leading edge to trailing edge
轉子葉片吸力面非定常壓力受葉片附面層和上游葉片尾跡共同影響,其主導頻率為上游葉片尾跡頻率及其倍頻,但是在吸力面前部氣流加速區壓力波動幅度沿流向增大,而在吸力面後部氣流減速區壓力波動幅度沿流向減小。分享友人