Chimney gaseous effluent sampling representativeness verification method

The invention belongs to the nuclear power plant effluent exhaust radiation monitoring technique, and particularly relates to a chimney gaseous effluent sampling representativeness verification method. The method is used for measuring physical quantities of flow speed distribution, an average cyclone angle, tracer gas concentration distribution, tracer aerosol concentration distribution and the like, and comparing an obtained measured result with judgment criteria to obtain the conclusion on whether a flow field and tracer agents are distributed uniformly. The chimney gaseous effluent sampling representativeness verification method provided by the invention not only is suitable for proportional models, but also is suitable for chimney gaseous effluent sampling representativeness verification experiments.