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- W2907382069 abstract "In continuous slab casting, clogging in the submerged entry nozzle (SEN) ports leads to flow asymmetry and vortex formation in the mould. Knowledge of vortexing and its influence on product quality is fundamental for defect-free production. In this study, the interconnected effects of nozzle clogging and SEN submergence depth, variation on flow asymmetry and vortex characteristics in a 0.4 scale water caster have been characterised by CFD investigation and validated with experimental results from the authors’ previous work. Mean flow velocities at the sub-meniscus and near the port exit predicted by the computational model are compared with the time-averaged values of the impeller probe velocity measurements and found to be in reasonable agreement. Three different clogging conditions (0, 33 and 66% in the left port of the SEN) for SEN submergence depth of 60 mm are studied and the 66% clogging produced vortices having largest diameter, which is consistent with the experimental observations. The effects of SEN submergence depth on flow asymmetry and vortexing are investigated with three different conditions – 40, 60 and 80 mm. It is found that the shallow SEN submergence depth (40 mm) produces vortices of largest diameter and the flow is most stable for a SEN submergence depth of 60 mm among the three cases. Vortex bending towards the SEN as noticed in the experimental observations is also observed in the computational study. This work illustrates the possibility of capturing features of vortexing using validated CFD model." @default.
- W2907382069 created "2019-01-11" @default.
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- W2907382069 date "2018-12-27" @default.
- W2907382069 modified "2023-09-26" @default.
- W2907382069 title "Vortex characteristics due to nozzle clogging in water caster mould: modelling and validation" @default.
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- W2907382069 doi "https://doi.org/10.1080/00084433.2018.1560662" @default.
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