A Modern Focusing Schlieren for Flow Visualization
A focusing schlieren system has been developed that does not have the limitations of previous versions, such as low image brightness, small field of view, and difficulty of use. Two-dimensional slices of the flow can be examined at selected depths. Good results are demonstrated, even through poor optical quality windows. A comparison with shadowgraph and conventional schlieren is also shown.
KeywordsFlow Visualization Shock Structure Imaging Lens Fresnel Lens Schlieren System
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