Designing an Ultrasonic Wind Tunnel with a Steam Ejector System of Combined Cycle Power Plants

The idea of constructing an ultrasonic wind tunnel using a steam ejector and superheated steam flow in combined cycle power plants is investigated through computational fluid dynamics. using a small portion of the plant's generated steam as a high-pressure source in the steam ejector can create an ultrasonic airflow in the test chamber. the applied numerical model is a viscous compressible flow that has been modeled with the sst k-omega turbulence model. all calculations are performed in ansys fluent commercial software. after validating the numerical process, different geometries have been proposed to achieve the ultrasonic secondary flow, and each structure has been numerically examined separately in a range of operating conditions. based on the previous findings, a trial and error method, and experimenting with several different structures, a suitable structure for obtaining the ultrasonic test chamber has been achieved. this structure has been parametrically studied in different functional conditions. it is shown that the proposed structure can generate secondary ultrasonic flow in an acceptable range of pressure and flow of superheated steam in the power plant. this structure has been presented for the first time in the literature, and such a structure has not been suggested in any of the previous works. therefore, the achievement of the secondary ultrasonic flow is the main innovation of this research.