Pressure and heat flux measurements on the surface of a low-aspect-ratio circular cylinder mounted on a ground plate

T Rödiger, H Knauss, U Gaisbauer… - New Results in Numerical …, 2008 - Springer
T Rödiger, H Knauss, U Gaisbauer, E Krämer
New Results in Numerical and Experimental Fluid Mechanics VI: Contributions to …, 2008Springer
The flow over a finite-height cylinder of aspect ratio H: D= 2: 1 has been studied by means of
oil-film visualization, pressure and heat flux fluctuation measurements. The measurements
were concentrated on the diameter-based Reynolds number of R ed= 2 x 10 5. A novel heat
flux gauge with a high spectral resolution was used to investigate the heat flux fluctuation on
the surface of a slightly heated cylinder. Comparative investigations showed qualitative
correlations between the pressure and heat flux fluctuations around the cylinder and on its …
Abstract
The flow over a finite-height cylinder of aspect ratio H:D=2:1 has been studied by means of oil-film visualization, pressure and heat flux fluctuation measurements. The measurements were concentrated on the diameter-based Reynolds number of R ed = 2 x 105. A novel heat flux gauge with a high spectral resolution was used to investigate the heat flux fluctuation on the surface of a slightly heated cylinder. Comparative investigations showed qualitative correlations between the pressure and heat flux fluctuations around the cylinder and on its free-end. Several flow features could be identified by means of time-resolved surface measurements.
Springer
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