Comparisons of Computed and Measured Mean Velocity and Turbulence Intensity In a Motored Rotary Engine
Comparisons of Computed and Measured Mean Velocity and Turbulence Intensity In a Motored Rotary Engine
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DOI：
10.4271/881602
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发表时间：
1988-10
期刊：
影响因子：
--
通讯作者：
J. Abraham;F. Bracco
中科院分区：
文献类型：
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作者：
J. Abraham;F. Bracco
首次比较了测量的和计算的平均速度，测量的波动强度和计算的湍流强度在一个机动转子发动机。计算进行了最近开发的三维模型。这些测量是在桑迪亚国家实验室由Dimpelfeld和Witze在沿转子外壳的沿着几个位置和两种发动机转速下进行的。测量和计算的平均速度一致在15%以内，而计算的湍流强度正确地比测量的波动强度低约30%至50%，正如预期的那样。
The first comparisons of measured and computed mean velocities, and of measured fluctuation intensities and computed turbulence intensities in a motored rotary engine are presented. The computations were performed with a recently developed three-dimensional model. The measurements were made at the Sandia National Laboratories by Dimpelfeld and Witze at several locations along the rotor housing and at two engine speeds. The measured and computed mean velocities agree to within 15% whereas the computed turbulence intensities correctly are lower than the measured fluctuation intensities by about 30% to 50%, as anticipated.