Simultaneous velocity and temperature measurements in turbulent Rayleigh-Bénard convection based on combined Tomo-PIV and PIT
Simultaneous velocity and temperature measurements in turbulent Rayleigh-Bénard convection based on combined Tomo-PIV and PIT
复制标题
基于 Tomo-PIV 和 PIT 组合的湍流 Rayleigh-Bénard 对流中的速度和温度同步测量
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
C. Wagner
中科院分区：
文献类型：
--
作者：
D. Schiepel;D. Schmeling;C. Wagner
A non-intrusive measurement technique for the simultaneous assessment of the three-dimensional
(3D) velocity and temperature �elds in thermal and mixed convection is presented. It is based on the
combination of Tomographic Particle Image Velocimetry (Tomo-PIV) and Particle Image Thermometry
(PIT) and applied on turbulent Rayleigh-B�enard convection in a water-glycol mixture at Ra = 9 � 109 and
Pr = 42. The approach is based on the work
ow of Tomo-PIV which provides the particle positions in the
fluid volume for PIT. Thermochromic liquid crystals serve as tracer particles and thermometers. Applying
this new technique, we measured the instantaneous 3D velocity �elds and the temperature �elds in terms
of hue-values.
