test rig description, JPEG 280KB

In order to investigate the continuous flow through turbomachinery blading the institute set up a transonic test rig. Within this test rig turbomachinery blades can be linearly arranged. Optical access to the flow section is enabled through windows in the test rig. Together with pressure and temperature transducers modern laser-optical equipment is used for flow analysis in subsonic and transonic flows. The blade cascade can be exchanged easily so that different bladings can be investigated.

 

transonic cascade, JPEG 80KB

In the picture you see a linear blade cascade as used in project S6801 with windows on both side to enable optical access to the transonic flow region. The flow section (circular design) can be easily exchanged with other test sections. In the foreground the Laser Doppler Velocimeter (LDV) probe is visible.

 

The video shows the transonic test rig located in the first basement . You will see (from left): two component LDV system including processors for real-time signal processing (Fourier Transformation) and a PC for data acquisition / data acquisition system for pressure, temperature / digital interferogram evaluation system. In the laboratory you see the transonic test rig with a Laser Doppler Velocimeter traverse (including the LDV-probe) in front, the inlet piping from the right. The laboratory can also be used for hot turbine tests runs sucking air through acoustic insulators from outside.