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hotwire
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  hot-wire
     Thermal Conductivity Measurement of Semitransparent Media at Temperatures from 300 to 800 K by Hot-Wire Method
     Thermal Conductivity Measurement of Semitransparent Media at Temperatures from 300 to 800 K by Hot-Wire Method
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  相似匹配句对
     Love HOT without reasons
     喜欢HOT,没有理由
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     Study on and Improvement of HOT and BOT
     HOT和BOT研究及改进
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     Development of the Electric Throttle Based on "X-by-Wire"
     面向“X-by-Wire”的电子节气门开发
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     1-Wire Network of Reliable Design
     1-Wire网络的可靠设计
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     Thermal Conductivity Measurement of Semitransparent Media at Temperatures from 300 to 800 K by Hot-Wire Method
     Thermal Conductivity Measurement of Semitransparent Media at Temperatures from 300 to 800 K by HotWire Method
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  hotwire
The spots at the final stage under zero and adverse pressure gradients were measured using conventional hotwire anemometry technique.
      
Computer-aided calibration and measurements with a quadruple hotwire probe
      
Silicon films were deposited at moderate substrate temperatures (280-500° C) from pure silane and a silane-hydrogen mixture (10% SiH4, 90% H2) in a hotwire CVD reactor.
      
The performance of a constant-temperature normal hotwire in a supersonic flow is critically examined.
      
The flow characteristics were tested using hotwire anemometry for mean flow and turbulence analysis, and flow visualization in air and water.
      
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The rotating stall in the compressor is investigated in this paper. The flow model of vortex systems and method for computing the flow field are estaflished by vortex theory. The computing examples for subsonic and transonic rotors are presented. The flow field and characteristic parameters in transonic rotor under the conditions of rotating stall are measured by combining hotwire-anemometer and fluctuating -pressure-barometer. The flow behaviors of rotating stall in transonic rotor are analysed and investigated....

The rotating stall in the compressor is investigated in this paper. The flow model of vortex systems and method for computing the flow field are estaflished by vortex theory. The computing examples for subsonic and transonic rotors are presented. The flow field and characteristic parameters in transonic rotor under the conditions of rotating stall are measured by combining hotwire-anemometer and fluctuating -pressure-barometer. The flow behaviors of rotating stall in transonic rotor are analysed and investigated. Some new flow phenomena are discovered. Which are valuable to investigate further.

本文研究了跨音转子的旋转失速现象。用旋涡理论建立了旋转失速工况下的涡系流动模型及流场算方法,给出了低速转子和跨音砖子的流场计算实例。用热线风速仪和脉动压力测试仪相结合测定了跨音转子的速度场及特征参数。分析和研究了跨音转子中旋转失速现象发生、发展和消失过程及其流动特点,其中发现了一些新的,有研究价值的流动现象。

The experimental study of the dynamic characteristics of flow past a two-dimensional circular cylinder is described. The fluctuation -of wall shear Stress, static pressure on the wall and velocity in flow are measured with hot-film, hotwire and pressure-transducer. The variation of the characteristics of fluctuation frequency of wall shear stress in the neighbourhood of stagnation and separation point is given. The cross-correlation functions of these fluctuations at any two points are calculated. The...

The experimental study of the dynamic characteristics of flow past a two-dimensional circular cylinder is described. The fluctuation -of wall shear Stress, static pressure on the wall and velocity in flow are measured with hot-film, hotwire and pressure-transducer. The variation of the characteristics of fluctuation frequency of wall shear stress in the neighbourhood of stagnation and separation point is given. The cross-correlation functions of these fluctuations at any two points are calculated. The experimental results reveal that there is an overall syncronous fluctuation, at the shedding frequency, in boundary layer in the flow past a two-dimensional circular cylinder at subcritieal Reynolds number.

本文给出了关于亚临界雷诺数二维圆柱绕流动态特性的实验结果。应用热膜、热线和压力传感器测量了壁面剪切应力脉动、壁面压力脉动和流场的速度脉动,给出了壁面剪切应力脉动频率在驻点附近和分离前后变化的特征,计算了这些脉动量在圆柱面上任意两点间的相关特性。实验结果表明,在亚临界雷诺数二维圆柱绕流的边界层流场中存在着一个频率与涡脱落频率相同的整体同步脉动。

The calibration of the constant temperature normal and inclined hotwire anemometer in transonic flows is described in this paper. The purpose of the calibration is to measure wire sensitivities to mass flow rate, density and direction. The experiments were performed in the nozzle of a variable density blow-down supersonic wind tunnel at Mach numbers ranging from 0.5 to 1.36, wire Reynolds numbers of 100 to 320 and at overheat ratios of about 1.0. It was found that within these test conditions , the mass...

The calibration of the constant temperature normal and inclined hotwire anemometer in transonic flows is described in this paper. The purpose of the calibration is to measure wire sensitivities to mass flow rate, density and direction. The experiments were performed in the nozzle of a variable density blow-down supersonic wind tunnel at Mach numbers ranging from 0.5 to 1.36, wire Reynolds numbers of 100 to 320 and at overheat ratios of about 1.0. It was found that within these test conditions , the mass flow rate and density sensitivies are almost equal and essentially independent of Mach number and Reynolds number, also the direction sensitivity is independent of Reynolds number. At the same time, we used Behrens' empirical relation to estimate the density and velocity sensitivities, after comparing with experimental results, we found the trends of both are consistent.

本文论述的是跨音速流中常温垂直和倾斜热线风速仪的校测。校测的对象是热线对质量流速率、密度和方向的敏感系数。校测的实验是在一个可变密度的暂冲式超音速风洞的喷管段中进行的,马赫数范围为0.5—1.36,雷诺数范围为100—320,过热比为1.0左右。实验表明,在这样的条件下,质量流速率和密度敏感系数几乎相等,基本上跟马赫数和雷诺数无关;方向敏感系数也跟雷诺数无关。同时,用Behrens的经验关系式估计了密度敏感系数和速度敏感系数,与实验数据作比较,结果二者的趋势是一致的。

 
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