湍流度
- turbulence
![湍流度](../cache/1612630.jpg)
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计算中湍流度取为10%~80%之间,湍流尺度为10-5~4m。
The turbulence intensity was varied from 10 % to 80 % and the turbulence length scale was varied from 10 μ m to 4 m.
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低层大气湍流度的参数化估算
Estimation on turbulence level in the lower atmosphere by parameterization technique
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近年来用X型热线探头旋转法测量低湍流度的三维流场的报导较多,但是对它的使用范围以及测量精度论及的很少。
In recent years a lot of papers about technique for measuring a3-D low turbulent flow field by means of rotating a X-type hot-wire probe has been published .
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实验在某低速风洞进行,工作段的横截面尺寸为0.6m×0.6m,湍流度小于0.2%。
The experiments were carried out in a low speed wind tunnel with a cross-section of 0.6 m × 0.6 m and a free-stream turbulent intensity of less than 0.2 % .
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该风洞具有低湍流度、可变湍流度、低噪声等几个特色。
Some notable characteristics include low-turbulence , adaptable turbulence and low noise .
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高湍流度下超高层建筑的风致振动响应特性
Wind-induced vibration response of super high-rise building in high-turbulence flow
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林带透风系数与湍流度关系的风洞试验研究
Study on the Relationship Between Ventilation Coefficient of Shelterbelt and Turbulence Scale
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通过实验,比较了粗糙、光滑壁面钝体的湍流度。
Their turbulence was compared too , by means of cold experiments .
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湍流度对边界层转捩测量的影响
Effect of the turbulence on boundary layer transition measurement
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湍流度和粗糙度对边界层转捩影响的研究
A study of the effects of turbulence and roughness on boundary layer transition
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高湍流度畸变流场的模拟
Simulation of distorted flow field with high turbulence level
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涡轮级内湍流度影响的非定常数值模拟
Numerical simulation on unsteady flow with turbulence intensity effects in a turbine stage
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逆压力梯度下的自由流湍流度对湍流边界层特性的影响
Effect of free-stream turbulence on turbulent boundary layer behaviour under adverse pressure gradient
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一座柔壁低湍流度风洞收缩段设计及主要工作特性
The contraction design and main flow characteristics of a low turbulence wind tunnel
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来流湍流度及端壁效应对涡轮叶片上对流换热的影响
Influences of mainstream turbulence and end-wall effect on convective heat transfer of turbine blade
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实验在低湍流度的均匀流中进行,模型表面光滑。
The experiments were carried out in low turbulent smooth flow . turbulent model .
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两次台风过程近地层湍流度和阵风因子分析
Analysis on turbulence and wind gust factor in surface layer during two typhoon processes
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不同下垫面表面层的湍流度统计特征
The Statistical Characteristics of Turbulent Intensities in Surface Layer at Different Underlying Earth 's Surfaces
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西北工业大学直流式低湍流度风洞设计中的几个关键问题
Some Key Problems in the Design of the NPU Open-Circuit Low - Turbulence Wind Tunnel
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低速高湍流度90°弯管流动数值模拟
Numerical Simulation in a 90 ° Curved Duct with Low Velocity and High Turbulence Level
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90°弯管内气固两相流颗粒运动对气相湍流度的影响
Effect of Particles on the Turbulence of Gas Phase Flow within a 90 ° Bend
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扭带管流体的径向速度和湍流度也比光管的大。
The radial velocity and turbulence intensity were also larger than those in the smooth tube .
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比较轴向和切向湍流度得知表明分离空间的湍流是各向异性的.旋转横流膜微滤压力场及流动数值模拟研究
Research on Pressure Field and Turbulence Numerical Simulation of Tubular Micro-filtration Membrane Separators with Rotary Cross-flow
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大湍流度高雷诺数时并列双圆柱的平均和脉动压力分布
Pressure distributions on two circular cylinders of side-by-side arrangements in high-turbulence flow at high Reynolds number
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实验的湍流度为:0.02%,0.10%和0.15%。
The turbulence levels of the tunnel tested were 0.02 % , 0.10 % and 0.15 % .
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低湍流度风洞中的斜置翼三维边界层测量试验研究
Measurement of three dimensional boundary layer flow on an infinite swept wing in low turbulence wind tunnel
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在所研究的吹风比范围内,吹风比增加,主流与壁面之间的换热增强,换热系数增大;小湍流度对换热系数影响不大,大湍流度则加强了换热。
Heat transfer coefficient between the mainstream and the wall was enhanced with the increase of blowing ratios .
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实验的湍流度为:0.02%,0.10%和0.33%。实验结果表明,不同的粗糙带对模型的气动特性有较大的影响。
The flow turbulence levels used in this test were 0.02 % , 0.10 % and 0.33 % .
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西工大低湍流度风洞的变湍流度技术
All changed the technique of varying turbulence level in the low turbulence wind tunnel of Northwestern Polytechnical University
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沿展向叶根、叶尖附近湍流度明显高于主流区。
The turbulence intensity is significantly higher near the hub and shroud than in the main flow field .