These factors make the die exit pressure, normalvelocity and shear rate not to be zero, thus lead to problems including die swell and etc.
这些影响因素使得口模出口处压力、法向速度和剪切速率均不为零，从而引发离模膨胀等问题。
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RESULTS: Hemodynamics of CV could be divided into 4 types: high velocity type (27%), normalvelocity type (22%), low velocity type (48%) and blood flow signal absence (2%).
In order to prove its validity, the method was used in the experiment to reconstruct the normalvelocity of a clamped point-driven steel plate, and satisfactory results were obtained.