But because of the temperature environment (radiation, heat conduction and convection) and the internal heat of the motor is not consistent, so we can not effectively protect the motor.
The forced convection was produced by the flow of the liquid through the central opening in the bottom of the internal crucible.
强制性对流是利用金属熔体流过凝固界面上方的内部坩埚底部中心的开孔形成的。
3
Numerical analysis is made for the unsteady and steady, two-dimensional laminar natural convection in an enclosure caused simultaneously by the external heating and a local internal heat source.