摘要
利用 ADV(Acoustic Doppler Velocimeter)技术对静止环境条件下圆射流流场紊动特性进行了研究 .通过专门的 Win ADV系统分析软件获得了射流横断面上流速的紊动强度、偏斜度、平坦度及雷诺应力的分布 ,轴线流速紊动强度的变化和射流瞬时速度变化等紊动特性 。
By using ADV (Acoustic Doppler Velocimeter) measurement techniques, the turbulent characteristics of a round jet in stagnant surroundings are studied in this paper. Through the special analyzing WinADV software, several characteristics are acquired, such as the profiles of turbulence intensity , skewness, kurtosis and Reynolds stress, as well as the variation of the instantaneous velocity and of turbulence intensity on axis. Furthermore, all the results are compared with other relative results at home and abroad.
基金
国家自然科学基金资助项目! (597790 2 1 )
关键词
射流流场
紊动特性
ADV技术
velocity field of turbulent jet
turbulent characteristics
ADV measurement techniques