I'm calculating unsteady flow. Each time step, 200 iteration. How to get result of flow every time step?

You can define an animation sequence. Solve\Animate\Define Just fill in "Every" and "When" in the Solution Animation window. e.g. every 2 time steps. There are various choices for storing the output, in memory, metafile, etc.

You can also store the case and data files at an interval you choose, via File -> Write -> Autosave. The "frequency" when doing an unsteady calculation is equal to the number of time steps. A frequency of 10 will save the chosen file for time steps 10, 20, 30 etc...

/Henrik