Tracer particle dispensing device and dispensing method for small-size PIV flow field testing experiment

The invention discloses a tracer particle dispensing device and dispensing method for small-size PIV flow field testing experiment and belongs to the technical field of laser particle measurement. The tracer particle dispensing device comprises a liquid storage tank, an air supply source, a surge tank, a pressurized air source and a view cup, the liquid storage tank is sealed by an upper cover board, the pressurized air supply is connected with the liquid storage tank, an inside duct which enters the bottom liquid of the liquid storage tank is connected with the upper cover board, the upper cover board is connected with a swirl nozzle in the view cup through an outside duct, and the surge tank is connected with a pneumatic joint arranged on a flange and connected with the view cup through a branch air inlet pipe. The tracer particle dispensing device is capable of continuously and stably producing tracer particles, the grain diameter is adjustable, the particle quality is high, and the flow field situation can be well reflected; the tracer particle dispensing device is simple in structure, convenient to use, low in raw material cost, and easy to popularize.