湍流边界层
- 网络Turbulent Boundary Layer;turbulence boundary layer;TBL
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用波数-频率谱传递函数描述包括粘弹性圆柱壳和流体负荷在内的整个系统,导出了TBL(湍流边界层)压力起伏激励下管内噪声场互谱函数的一般表示式。
Abstract : Applying the wavenumber frequency transfer function to describe the whole system including the elastic cylindrical shell and the fluid loading , a general expression of the cross spectrum of the interior noise induced by the TBL ( Turbulent Boundary Layer ) pressure fluctuations is derived .
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通过微气泡控制湍流边界层减阻的研究与进展
Trends in Research of Drag Reduction by Micro-bubbles Controlling Turbulent Boundary Layer
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关于CS湍流边界层计算方法的改进
An improvement of CS method for calculating turbulent boundary layer
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高Reynolds数下湍流边界层的尺度律
Scaling for turbulent boundary layer in high Reynolds number
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湍流边界层起伏压力谱和聚偏氟二乙烯薄膜(PVDF)水听器响应的实验研究
Experimental study on spectrum of turbulent-boundary-Layer fluctuation pressure and response of a PVDF hydrophone
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湍流边界层中固体小颗粒湍流运动的Lagrangian模型
Lagrangian Model on the Turbulent Motion of Small Solid Particle in Turbulent Boundary Layer Flows
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BL模式在超声速湍流边界层中应用的检验
Examination of the application of BL model in supersonic turbulent boundary layers
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本文利用Euler方程和可压缩湍流边界层积分方程研究绕跨声速翼型的有粘与无粘强干扰流动。
Euler and compressible turbulent integral boundary-layer equations are used to analyze viscous / inviscid strong interaction flows over transonic airfoils .
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用三分量LDV测量壁湍流边界层
Measurements of Turbulent Boundary Layer on a Wall of Water Channel by 3D LDV
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提出了结合湍流边界层厚度系数kδ和动量损失厚度δ2由无离心流动计算逐渐逼近离心流动的计算方法。
A method is presented that by boundary layer thickness coefficient k δ and momentum thickness δ 2 the fluid calculation without centrifugal force approaches the fluid calculation with centrifugal force gradually .
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Laval喷管内激波/湍流边界层干扰的数值模拟
Numerical Simulation of Shock Wave / Turbulent Boundary Layer Interaction in Laval Nozzle
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利用二维LDV系统对零压力梯度下光滑面和减阻沟槽面湍流边界层流场进行对比测量。
Two-component LDV measurements in a turbulent boundary layer with zero pressure gradient have been performed .
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作为湍流边界层中运动的粒子,微气泡受到水的阻力可能会在Stokes阻力范围内。
As the moving particle in the turbulence boundary layer , the resistance on microbubble from water may be fallen inside the scope of the Stokes Law .
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在湍流边界层中对SL标度律及其参数进行研究,可以加深对边界层湍流的认识。
For understanding the mechanism of turbulent boundary layer better , coherent structures and the parameter of SL scaling law were researched with experimental methods .
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在开口式循环水槽底部湍流边界层外区中引入周期性扰动,利用X型热膜探针对下游扰动进行测量。
Artificial periodic disturbances are introduced to the outer field of turbulent boundary layer in an open circular style water channel . X style hot film probe and anemometer are employed to measure the disturbance in the downstream area .
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使用GAO-YONG方程组对湍流边界层拟序结构特性的研究
The Simulation of Coherent Structure in Turbulence Boundary Layer Using GAO-YONG Turbulence Equations
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湍流边界层的两层模型(TLM)微分法在过去的十几年里得到了迅速发展。
The Two-Layer Model ( TLM ) differential method for turbulent boundary layers is rapidly developed over the last decade .
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实验中使用了恒温式IFA300智能型热线风速仪对3种不同尺寸的对称V型脊状表面湍流边界层流动参数进行了测试。
In the experiment three symmetrical Vriblet surfaces which are different in scale have been tested by using of IFA300 constant temperature hotwire anemometer .
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本文从广义曲线坐标运动方程出发,以及根据Head的二维牵引理论(entrainmenttheory)模型导出沿侧滑翼法向翼剖面表面曲线的三维可压缩湍流边界层运动方程组。
This paper starts from the equations of motion in generalized curvilinear coordinates and the model of Head 's two-dimensional entrainment theory , and derives a set of equations along surface curve on normal profile of a yawed wing for a compressible three-dimensional turbulent boundary layer .
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以光滑平板及间隔V型减阻沟槽面为研究对象,利用二维LDV系统获得光滑平板及沟槽板上部区域湍流边界层流场的流动参数。
Measurements of flow field by means of a two-component LDV have been carried out in turbulent boundary layers over a smooth surface and a spaced V-type drag reducing grooved surface with a zero pressure gradient .
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应用湍流边界层的两层模型,导出了稀相气固两相流通过具有恒定热通量圆管时的Nusselt数。
Applying two-layer model of turbulent boundary layer , Nusselt number for disperse phase gas-solid two-phase flow to pass through a pipe with constant heat flux are developed .
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本文研究粘弹性圆柱壳内圆柱面和双圆片形水听器和阵对于TBL(湍流边界层)压力起伏的响应。
This paper investigates the responses of the cylindrical area hydrophone and two-circular areahydrophone in viscoelastic cylindrical shell to the TBL ( turbulent boundary layer ) pressure fluctuations .
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利用一个φ8mm水听器和一个20元阵在水洞中测量了湍流边界层起伏压力的点功率谱密度和波数频率谱密度。
The point power spectrum density and the wavenumber frequency spectrum density of turbulent-boundary - layer fluctuation pressure are measured by use of a φ 8 mm hydrophone and a 20-element array , respectively .
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在湍流边界层的近壁区,采用对称共振三波的理论模型描述相干结构,根据理论模型对Reynolds应力输运方程逐项进行计算和分析,结果与直接数值模拟符合很好。
A symmetric resonant triad theoretical model was proposed to describe the turbulent coherent structures in the near wall region of a turbulent boundary layer . Based on this model , the Reynolds stresses were calculated , their production rates , dissipation rates and transport were evaluated .
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同时指出需要利用先进的实验技术如PIV等图像处理手段并结合直接数值模拟对湍流边界层的瞬时流场进行研究,以其找出湍流边界层的流动结构及其运动规律。
It was also suggested that the means of certain advanced technology such as PIV image processing method combined with the direct numerical simulation should be used in the research of instantaneous flow field in turbulent boundary layer over grooved surface in order to find out the drag reduction methanism .
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边界层计算采用湍流边界层积分反方法,它借助Whitfield和Swafford提供的既适合附着流,也适合分离流的速度剖面表达式。
The boundary layer inverse algorithm is employed for the calculation of turbulent boundary layer , with velocity profile expressions applicable to both attached and separated flows , suggested by Whitfield and Swafford .
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对旋转螺旋面及压气机转子叶片上的三维旋转湍流边界层进行了计算。计算结果与实验和C-S模型计算结果比较表明,该模型对近壁参数的预测能力有所改善。
Calculations are done with this model on a rotational helical blade and a compressor rotor blade , the results art : comparied with experiments and the computation results with C-S model , showing that the present model can improve the prediction capability of near wall parameters in certain extent .
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用非线性涡粘性模式计算三维湍流边界层
Numerical simulation of three-dimensional turbulent boundary layer with nonlinear eddy-viscosity model
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湍流边界层多尺度相干结构的子波自相关辨识
Wavelet Auto-Correlated Identification of Multi-Scale Coherent Structures in Turbulent Boundary Layer
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湍流边界层采用积分反方法。
Inverse integral method is used for compressible turbulent boundary layer .