Description and Flow Assessment of the Delft Hypersonic Ludwieg Tube

摘要

An assessment of the hypersonic Ludwieg Tube of Delft University of Technology (Hy-personic Test Facility Delft, HTFD) is given. The facility is discussed theoretically and an experimental evaluation is performed to infer the facility performance. Experiments are performed using conventional techniques such as static and total head pressure measure-ments and Fay-Riddell heat flux evaluations by means of infrared thermography. Further-more PIV (particle image velocimetry), a more state of the art technique is used to deduce nozzle boundary layer parameters as well as the free stream flow field and the static and total temperature for the Mach 7 nozzle. Finally for the Mach 9 nozzle, stagnation heat flux measurements were performed to obtain the total temperature of the flow.