Figure 7 - uploaded by Theeradech Mookum
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The effect of source current density on the magnitude of electromagnetic force at the coil level at y = 0 . 05 m along the horizontal line from x = 1 . 0 m towards the liquid pool
Source publication
This paper aims to present a mathematical model and numerical technique to study the three-dimensional fluid flow and heat transfer in the electromagnetic steel casting process. The effect of source current density on the electromagnetic force as well as on the flow and temperature fields is in-vestigated. The numerical results indicate that the so...
Context in source publication
Context 1
... higher value of source current density generates a larger magnitude of electromagnetic force. By increasing the source current density from 1.5×10 5 A/m 2 to 2.4×10 5 A/m 2 , the magnitude of electromagnetic force near the mould wall increases by a remarkable amount from 17 N/m 3 to 45 N/m 3 as shown in Figure 7. This clearly shows that the magnitude of electromagnetic force can be controlled by controlling the imposed source current density. ...
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Citations
... Over the last few decades, most of the research efforts have been focussed on investigating the flow pattern and heat transfer problems in the continuous casting process [1], [4], [7], [9], [11], [18], [21]. Mookum [12], [13] presented a mathematical model to study the effect of electromagnetic field on the flow and temperature fields. The results indicated that the electromagnetic force reduced the speed of the molten steel near the mould wall. ...
... The equation (15) is first solved to obtain the initial condition for the level set equation (14). Based on our previous work in [12], the electromagnetic force can be determined by ...
... To solve the steady state system of equations (24) and (25), we can solve first equation (24) forφ and then use this solution to solve equation (25) forÃ. For the finite element solution of u i , p, T, ϕ, K and ε, the variational statement for the boundary value problem corresponding to the the equations (4), (5), (6), (12), (13), and (14) subjected to relevant boundary conditions is established as follows: ...
This paper aims to study the effect of turbulence on the flow of two fluids and the heat transfer - solidification process in electromagnetic continuous steel casting. The complete set of field equations is established. The flow pattern of the fluids, the meniscus shape and temperature field as well as solidification profiles obtained from the model with and with no turbulence effect are presented. The results show that the model with turbulence gives a large circulation zone above the jet, much larger variation of the meniscus geometry, a slow solidification rate and higher temperature in the top part of the strand region.
