Fluid control method and taylor vortex reactor

A Taylor vortex reactor comprising:

• an outer cylinder;
• an inner cylinder that is coaxially disposed in the outer cylinder, is rotationally driven around an axis, and forms a reaction chamber between the inner cylinder and the outer cylinder;
• a reaction target fluid supply device that supplies, to the reaction chamber, a reaction target fluid that generates a reaction phase;
• a heterophasic fluid supply device that supplies, to the reaction chamber, a heterophasic fluid that generates a non-reaction phase different from the reaction phase;
• and
• a detection device that detects whether the reaction phase having a ring shape and the non-reaction phase containing the heterophasic fluid and having a ring shape are generated adjacent to each other in the axial direction in the reaction chamber.