A two-component acoustic velocity profiler for use in turbulent open-channel flow
A two-component acoustic velocity profiler for use in turbulent open-channel flow
复制标题
用于明渠湍流流动的二分量声速剖面仪
DOI：
10.1080/00221689709498410
复制
发表时间：
1997
期刊：
影响因子：
--
通讯作者：
U. Lemmin
中科院分区：
文献类型：
--
作者：
T. Rolland;U. Lemmin
The characteristics of an ultrasonic instrument, the bistatic acoustic Doppler velocity profiler (ADVP) are described. The bislatic system can measure profiles of two components of the instantaneous velocity vector with no restrictions on the flow conditions. Results of the bistatic ADVP measurements of water velocity and turbulence in uniform flow in laboratory open channels, were found to coincide well with the laws for mean velocity, variance and Reynold's stress. This indicates that the turbulence scales are sufficiently resolved in the ADVP measurements. Two-dimensional flow patterns derived from the ADVP measurements demonstrate the presence of coherent structures. The instrument was found to be a useful research tool for non-intrusive and accurate instantaneous profile measurements under turbulent flow conditions unaffected by water quality.
