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首页> 美国政府科技报告 >Comparison of mixing characteristics in bottom-blowing ladle, LD converter, and RH degassing process.
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Comparison of mixing characteristics in bottom-blowing ladle, LD converter, and RH degassing process.

机译：底吹钢包，LD转炉和RH脱气工艺的混合特性比较。

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The correlation between mixing time ((tau)) and mixing power density ((var epsilon)) is confirmed through water model experiments. In flow controlled predominately by inertia or turbulent viscous force, (tau) is proportional to (var epsilon)(sup (minus)1/3)L(sup (gamma)) where the power ((gamma)) to vessel size (L) depends on the vessel type. The value of (gamma) reflects the turbulent structure of agitated liquid and it is an essential factor for scale-up. Thus, the precise information of turbulence, i.e., the velocity variation is measured by a hot-wire anemometer and a spectral analysis of the velocity fluctuation is computed by the method of FFT(Fast Fourier Transform). The dissipation energy of turbulence ((bar (var epsilon))(prime)) can be evaluated from the information of the spectral analysis. A correlation between (tau) and (bar (var epsilon))(prime) is presented in a unified fashion without regard to the kind of vessels.

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