Japan Aerospace Exploration Agency (JAXA)
Japan Aerospace Exploration Agency (JAXA)
Japan Aerospace Exploration Agency (JAXA)
Japan Aerospace Exploration Agency (JAXA)
Japan Aerospace Exploration Agency (JAXA)
18 June-19 June, 2009, Japan Aerospace Exploration Agency
抄録（英）
A Reynolds-averaged modeling is made of the turbulent-diffusion suppression mechanism in a swirling pipe flow. The combined effect of mean vorticity and streamwise structure variation is incorporated into the characteristic time scale, on the basis of which the turbulent-viscosity model for the Reynolds stress is constructed. The model is incorporated into the two-equation modeling. Thought the computational test, it is shown that some primary characteristics of a swirling pipe flow may be reproduced within the framework of the isotropic turbulent-viscosity representation. This finding indicates that the newly-introduced effect is a promising candidate for the mechanism of the radial turbulent-transport suppression of axial and circumferential momenta.
旋回流における乱流拡散抑制機構のレイノルズ平均モデリング
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