<p>A multi-strand induction heating (IH) tundish can use a dual-port channel (DPC) as a flow diversion device. In this research, a coupled model of electromagnetic, flow, heat transfer, and inclusions was established, and the reliability of the flow model was verified through a 1:3 water modeling experiment. By comparing the distribution of the electromagnetic field, the flow behavior of molten steel at the channel, the residence time distribution (RTD) curves of the tundish, the tundish outlet temperature and temperature differences, and the effectiveness of inclusions removal under different DPC structures, the applicability of the DPC structures in the IH tundish was analyzed in-depth. The research shows that the DPC structure will modify the channel body and has a significant impact on the electromagnetic field distribution near the channel outlet. The DPC structures with one port on the side of the channel and one at the front (Case F1 and Case F2) are not suitable for IH tundish. Although Case F2 can provide excellent flow diversion and significantly improve flow consistency when IH is turned off, the standard deviation of the average residence time for the middle strand and edge strand decreases from 66 to 9 seconds. However, with IH, it causes molten steel to be drawn back at the side port. The steel flow rate at the front port increases from 16.33 kg&#xa0;s⁻¹ when IH is turned off to 50.79 kg&#xa0;s⁻¹, resulting in the molten steel flowing more concentratedly from the front port of the channel. The diverter structure with no port at the front of the channel and one port on each side of the channel (Case F3) can effectively divert molten steel flow, regardless of whether the IH is turned on or off. Meanwhile, any DPC structure can effectively improve the removal of inclusions when the IH is turned off. This study provides guidance and reference for the on-site application of IH tundishes and offers in-depth recommendations for the rational selection of DPC.</p>