The implicit control-volume method was used,the constant flow rate was employed to get the melt front velocity profile,and the reciprocal of the velocity was utilized for the designation of ram speed.

• 数值模拟采用隐式控制体积法,利用等流率注射数值模拟获得熔体前沿的速度,该速度的倒数与充填百分比的曲线作为螺杆注射速率的相对变化曲线。