Beschreibung
Description
The test rig for the fundamental investigation of impingement effusion cooling at the Institute of Thermal Fluid Machinery enables the investigation of different and novel hole geometries and hole patterns. In addition, the position of the impingement bores relative to the effusion bores can be varied continuously in order to simulate displacements that can occur, for example, due to thermal expansion. It is possible to comply with all relevant similarity parameters so that the results can be transferred directly to the real machine.
Optical accesses enable both thermal measurements using infrared thermography (IRT) on the bottom and top of the effusion plate, as well as aerodynamic measurements using stereoscopic particle image velocimetry (SPIV) in the cavity between the baffle and effusion plate. This allows the aerothermal and thermal behavior of the cooling process to be fully quantified.
Measurement technology & control
- 3-component velocity vector fields (3C-2D stereoscopic particle image velocimetry)
- Temperature fields (infrared thermography)
- Temperatures (type K thermocouples)
- Pressures (differential pressure transducers)
- Mass flows (vane wheel counters)
- LabVIEW