MATHEMATICAL AND PIV PHYSICAL SIMULATION FOR MELT FLOW IN CONTINUOUS CASTING OF ALUMINUM ALLOY SLAB
It has been known that the flow of the liquid metal during continuous casting can affect the microstructure of a solidified metal. Mould is one of important opportunities to optimize slab quality and its condition has direct influence on slab quality. Many evolutions on mathematical and physical simulation for flow field in the mould in the continuous casting have been obtained, but most of them have concentrated on the steel casting. This paper makes physical simulation by PIV technology, with the size of 1000×300mm model for melt flow in the slab mould of continuous casting of aluminums alloy. Because of Symmetry, we can study only half of model. Comparing floating distributor with 0°、 15°、20°、 30°. The experimental results show that there are two recirculation loops in the half, the upper recirculation loop upward along the solidification front reaches the free surface; the lower roll reaches the maximum penetration depth and then upward return. With the increase of casting speed the free surface is more unstable, appropriate increase of angle can effectively stabilize the free surface. Mathematical simulation of flow field is developed by commercial software FLUENT considering influence of processing parameters on flow field and the fundamental character of flow in the mould is mostly similar with PIV simulation. Because of ideal hypotheses in mathematical simulation, the flow field in PIV simulation is closer to practical situations.
Continuous casting PIV Physical simulation Mathematical simulation.
Xu XUAN Xingguo ZHANG Huanyue ZHANG Canfeng FANG Hai HAO
School of Materials Science and Engineering, Dalian University of Technology, Linggong Road 2 Dalian, 116024, China
国际会议
大连
英文
499-505
2007-08-19（万方平台首次上网日期，不代表论文的发表时间）