Tobias Hermann is excited to tell us about an experiment he and colleagues performed in collaboration with the High Enthalpy Flow Diagnostics Group at the University of Stuttgart. A porous ZrB2 ceramic sample was heated by a laser while they simultaneously cooled it by passing Nitrogen gas through it.
The setup used is shown in the figure below.
The team recorded the temperatures at the surface (front and back) and of the pressure of the coolant gas. Surface temperature was measured using an infrared thermographic camera. A sample image of this measurement can be seen in the figure below.
Tobias enthusiastically reports that these experiments allowed the team to determine the effectiveness of the internal heat transfer between the porous ceramic and the Nitrogen coolant flow.