FILM THICKNESS AND CONVECTION COEFFICIENT FORMULATIONS OF KEFF
 
A. G. Ostrogorsky
(UDC: 539.216)
Abstract:
The Burton, Prim and Slichter‘s BPS model published in 1953 is considered to be of the most useful equations in crystal growth and is presented in most textbooks on solidification. It relates the effective segregation coefficient keff as a function the stagnant film thickness δ. During the past decades, the shortcomings of the BPS model have been recognized and several new film-thickness based models have been proposed. Here we revisit the film-thickness based models and compare to the recently proposed model, where keff is a function of the effective convection coefficient heff.