Characterization of pressure dynamics in an axisymmetric separating/reattaching flow using fast-responding pressure-sensitive paint

被引：32

作者：

Bitter, Martin ^{[1
]}

Hara, Tatsuya ^{[2
]}

Hain, Rainer ^{[1
]}

Yorita, Daisuke ^{[2
]}

Asai, Keisuke ^{[2
]}

Kahler, Christian J. ^{[1
]}

机构：

[1] Bundeswehr Univ Munich, Inst Fluid Mech & Aerodynam, D-85577 Neubiberg, Germany

[2] Tohoku Univ, Sch Engn, Dept Aerosp Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

EXPERIMENTS IN FLUIDS | 2012年 / 53卷 / 06期

关键词：

FACING STEP;

D O I：

10.1007/s00348-012-1380-7

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This collaborative work discusses the results of time-resolved pressure-sensitive paint measurements performed on a model of a generic spacecraft under sub- and transonic test conditions. It is shown that optical pressure measurements using an active layer from platinum-porphyrin complexes (PtTFPP) in combination with a polymer-ceramic base layer are able to measure dynamic flow phenomena in the trisonic wind tunnel facility up to sampling rates of 2 kHz. Low amplitude fluctuations in the order of 0.1 kPa were determined by means of this measurement technique. The buffet dynamics, as well as the spatial extent of the recirculation area in the near-wake, compare well with numerical predictions and PIV measurements. Furthermore, characteristic coherent pressure modes on the base were resolved, which were predicted by large-eddy simulations.

引用

页码：1737 / 1749

页数：13

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