Numerical Simulation of Multi-electromagnetic Field Compounded of Travelling Magnetic Field and High Frequency Alternating Magnetic Field in Directional Solidification
Based on the features of the APDL language owned by the ANSYS application software and the theory about electromagnetic field,the method was proposed for solving multi-electromagnetic field which has several orders of magnitudes in frequency difference and calculating the time average values of multi-electromagnetic field in post-processing,which combines with the characteristics of multi-electromagnetic field in directional solidification.The simulation of multi-electromagnetic field in directional solidification has been achieved in this paper.The analyzed results indicate that the magnetic flux density of multi-electromagnetic field is equal to the vector addition of traveling magnetic flux density and high-frequency alternating magnetic flux density,and Lorentz force generated by multi-electromagnetic field is much larger than linear superposition of all monochromatic fields of different frequencies.