不清楚商软那面怎么回事,本身我也没太关注这个,我查了一下,OpenFOAM本身这面的streamline看起来是你说的patiline:
This function object generates streamline data by sampling a set of
user-specified fields along a particle track, transported by a
user-specified velocity field.
后处理软件paraview的streamline是如何定义的还没找到。