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首页> 外文会议>Materials Science Technology Conference and Exhibition >LARGE EDDY SIMULATION ON FLOW STRUCTURE IN A DISSIPATIVE LADLE SHROUD
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LARGE EDDY SIMULATION ON FLOW STRUCTURE IN A DISSIPATIVE LADLE SHROUD

机译：耗散钢包罩流动结构的大型涡流模拟

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摘要

The ladle shroud can also play as a flow control device in tundish. Water modelling and Reynolds-average modelling were employed, but not very suitable to describe the turbulent flow with strong instant velocity variations and high-energy dissipation in the ladle shroud. Large eddy simulation was employed to study the turbulence structure in a dissipative ladle shroud (DLS) in the present study. Velocity, vorticity and turbulence dissipation were discussed to characterize the effect of a dissipative ladle shroud, compared with that of a bell-shaped ladle shroud. The results showed that the velocity decreased and vortices were formed in the three chambers in the DLS which promoted higher velocity fluctuations and turbulence dissipation rate. These effects can encourage a decreased outflow velocity and a better tundish performance.
机译：钢包裹也可以作为中间包中的流量控制装置。采用水建模和雷诺平均建模，但不是非常适合描述具有强大的速度变化和钢包裹罩中的高能耗散的湍流。采用大涡模拟在本研究中研究耗散钢包裹（DLS）中的湍流结构。讨论了速度，涡流和湍流耗散，以表征耗散钢包裹罩的效果，而钟形钢包裹罩相比。结果表明，在DL的三个腔室中形成速度下降和涡流，其促进了较高的速度波动和湍流耗散速率。这些效果可以鼓励降低的流出速度和更好的中间包性能。

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