In fact, micrometer scale is still very large compared to molecule sizes. Since Molflow assumes that molecules don't collide (which is true up to around 10-3 mbar), the exact scale doesn't matter. Simply scale the geometry correctly (be careful, default distance units in Molflow are centimeters).
Let me know if you have a concrete question, otherwise the simulation should be similar to macroscopic ones.
Yes.
In fact, micrometer scale is still very large compared to molecule sizes. Since Molflow assumes that molecules don't collide (which is true up to around 10-3 mbar), the exact scale doesn't matter. Simply scale the geometry correctly (be careful, default distance units in Molflow are centimeters).
Let me know if you have a concrete question, otherwise the simulation should be similar to macroscopic ones.