Flow visualization of a recirculating flow by rheoscopic liquid and liquid crystal techniques |
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Authors: | H S Rhee J R Koseff R L Street |
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Institution: | (1) Hydromechanics Laboratory, School of Engineering, Stanford University, 94305 Stanford, CA, USA |
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Abstract: | Experiments were conducted in a three-dimensional lid-driven cavity flow to study the behavior of longitudinal Taylor-Görtler-like vortices. Flow visualization was accomplished by use of a rheoscopic liquid and of liquid crystals, together with laser-light and white-light sheets, respectively. Photographs of the lighted planes in the flow confirmed the existence of the vortices for a wide range of Reynolds numbers and for stable, neutrally-buoyant and buoyant global flow conditions. As usual the flow visualization revealed flow patterns not deducible by in situ measurements; the liquid crystal photographs give both flow pathlines and temperature distribution on any lighted plane. |
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