جستجوی مقالات مرتبط با کلیدواژه « تکنیک چکرالسکی » در نشریات گروه « فیزیک »

In this article, a set of 2D numerical simulations were performed for different stages of a real Czochralski (Cz) growth of germanium crystal using Finite Element Method. The results of temperature distribution, melt and gas flow field, and crystal-melt interface were obtained numerically using the Reynolds-averaged turbulence modelling approach. The obtained results show that, as the crystal length is increased (i.e., the melt depth is decreased), the constant rotation rates of crystal and crucible increase both the melt Reynolds number and its turbulent kinetic energy, because of transferring constant momentum and energy to the remaining Ge melt. In addition, the computed crystal-melt interface shape for germanium crystal having 9 cm height was in a good agreement with the experimental data and observations in the crystal growth lab.