Affiliations: Laboratory of High Temperature Gas Dynamics, Institute
of Mechanics, Academia Sinica, Beijing 100080, China.
Abstract: This paper presents a new method of acquiring a permanent full-scale
oil flow pattern using a sheet of wax paper and its application to the study of
swept shock and boundary layer interaction in the hypersonic pulse tunnel. It
is gratifying to notice that the technique is easy to apply to a model and
offers a clear authentic full-scale visible flow pattern that is investigated
by visual inspection without photographic processing. The present study
indicates that the oil dot wax paper visualization is trustworthy and
particularly suited to short duration facility.
Keywords: surface flow visualization, oil dot wax paper technique, hypersonic pulse tunnel, interaction of swept shock and boundary layer.