A novel perspective to high-speed cross-hot-wire calibration methodology

被引:28
作者
Cukurel, B. [1 ]
Acarer, S. [1 ]
Arts, T. [1 ]
机构
[1] von Karman Inst Fluid Dynam, B-1640 Rhode St Genese, Belgium
关键词
ANEMOMETER PRACTICE; COMPRESSIBLE FLOWS; SUPERSONIC FLOWS; TEMPERATURE;
D O I
10.1007/s00348-012-1344-y
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
A practical cross-hot-wire calibration and data reduction methodology for instantaneous measurements of mass flux and flow angle is developed for two dimensional subsonic compressible flows. Historically, data reduction for flow conditions of 0.4 < M < 1.2 is regarded as problematic, even in the simplified case of flow normal mounted wires. Thus, in comparison with the incompressible and supersonic conditions, the literature addressing these flow regimes is quite limited. The present study addresses this void by relating the wire voltages to flow conditions through renormalized, Mach and overheating independent, nondimensional quantities. Therefore, a short and robust calibration can be performed in an unheated free jet facility with applicability toward a broad range of planar flow conditions. This disposes the need for typical closed loop calibration wind tunnels which vary flow velocity, density and temperature independently to parameterize the voltage dependency in a purely empirical manner.
引用
收藏
页码:1073 / 1085
页数:13
相关论文
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