Multi-medium tracing method based on magnetic fluorescent particles

The invention discloses a multi-medium tracing method based on magnetic fluorescent particles. According to the method, firstly fluorescent particles with more than two fluorescent substances are required to be prepared, then the magnetic fluorescent particles are placed in layered premixing channels in advance, the premixing channels correspond to different fluids, and the magnetic fluorescent particles are premixed with the fluids and get into test section together to form a flow field; then filters of different bands are installed on a recording camera to receive reflected light of different magnetic fluorescent particles according to the reflected light wavelength of different fluorescent particles so as to realize synchronous observation for the flow pattern and motion characteristicsof the multiphase fluid flow field; and after the magnetic fluorescent particles are recycled by using the magnetism thereof after the experiment. The magnetic fluorescent particles of the inventioncan be used in different e