Shih, C.J.C.J.ShihLee, M.H.M.H.LeeCHUNG-WEN LAN2008-12-032018-06-282008-12-032018-06-282005http://ntur.lib.ntu.edu.tw//handle/246246/87487We present a simple approach that could help quantitative phase field simulation for dilute-alloy solidification. The proposed approach mends the solute trapping problem by using a simple interface model (SIM), which requires only one free parameter. To test the feasibility of this model, a free dendritic growth from a small nucleus is simulated, and a good agreement with the anti-trapping current (ATC) model [Karma, Phys. Rev. Lett. 87 (2001) 115701] is obtained. By further studying the solute trapping effect during directional solidification, we find that the results give, with this model, a good thermodynamic consistence without solute trapping over two-order increment of the solidification speed and the interface thickness. Good agreement with the classical theory is obtained as well.application/pdf505582 bytesapplication/pdfen-USjournal article10.1016/j.jcrysgro.2005.05.0522-s2.0-23144461754http://ntur.lib.ntu.edu.tw/bitstream/246246/87487/1/49.pdf