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首页> 外文期刊>International Journal of Heat and Mass Transfer >Effect of a swirling ladle shroud on fluid flow and mass transfer in a water model of a tundish
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Effect of a swirling ladle shroud on fluid flow and mass transfer in a water model of a tundish

机译：中间包水模型中钢包旋流罩对流体流动和传质的影响

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摘要

A swirling ladle shroud (SLS) is used to control flow turbulence and to improve flotation of inclusions in a two-strand tundish of a slab caster. To simulate the fluid flow in a swirling flow three turbulence models, k-ε, k-ω and RSM were employed. Using the mixing kinetics of a tracer as well as Particle Image Velocimetry (PIV) determinations it was found that among these three models the model of turbulence RSM predicts with acceptable agreement the velocity fields of swirling flows experimentally measured. The SLS decreases the turbulence of the entering jet and of the complete flow field when it is compared with a conventional ladle shroud. Kinetic energy of fluid is dissipated through recirculating flows in the transversal and horizontal planes of the tundish helping to the flotation of inclusions through buoyancy, drag and inertial forces. The SLS will become in a new generation of flow control devices in continuous casters of steel.
机译：旋流钢包护罩（SLS）用于控制流的湍流并改善板坯连铸机两流中间包中夹杂物的浮选。为了模拟旋流中的流体流动，采用了三种湍流模型，即k-ε，k-ω和RSM。使用示踪剂的混合动力学以及粒子图像测速（PIV）测定，发现在这三个模型中，湍流模型RSM可以以可接受的协议预测实验测量的旋流的速度场。与传统钢包导流罩相比，SLS降低了进入的射流和整个流场的湍流。流体的动能通过在中间包的横向和水平面上的再循环流消散，从而通过浮力，阻力和惯性力帮助包裹体浮选。 SLS将成为钢连铸机中新一代的流量控制设备。

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