各向同性turbulence中摩擦加热产生的温度谱
The temperature spectrum generated by frictional heating in isotropic turbulence
摘要：
在每一个具有非零粘度的湍流中，热由粘性摩擦产生。然后，这些热量被速度场混合。我们考虑如何产生这种方式的热波动注入和分布在各向同性湍流的长度尺度。一个三元封闭推导和数值积分。它示出了如何的热波动谱依赖于雷诺数和普朗特数。
英文摘要：
In every turbulent flow with non-zero viscosity, heat is generated by viscous friction. This heat is then mixed by the velocity field. We consider how heat fluctuations generated this way are injected and distributed over length scales in isotropic turbulence. A triadic closure is derived and numerically integrated. It is shown how the heat fluctuation spectrum depends on the Reynolds and Prandtl numbers.
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