Abstract: Based on a finite element model,the magnetic induction intensity and Joule heat obtained from Maxwell were imported into Fluent as source terms to investigate the flow field and temperature field of molten steel in a fivestrand four-channel induction heating tundish under the influence of ladle heat dissipation.The results show that,during the casting process,the temperatures at the three outlets of the tundish without ladle heat dissipation decrease slowly and exhibit a similar trend,with a temperature drop of less than 1 Kamong the outlets.In contrast,under the influence of ladle heat dissipation,the temperatures at the three outlets differ significantly,with a temperature difference of nearly 20 Kbetween the early and late stages of casting.Although induction heating compensates for the temperature loss of molten steel in the ladle,it does not significantly reduce the temperature variation across different casting periods.The maximum outlet temperature is 11 Klower than the initial casting temperature.When the induction heating power is adjusted during casting,the maximum temperature difference between different time points remains within 2K,and the temperatures remain relatively consistent across different periods and outlets.