Doppler Global Velocimeter-Development and Validation with Measurements in a Round Free Jet

• 来源期刊: 热科学学报（英文版）
• 年，卷（期）: 2009,（1）
• 页码范围: 74-84
• 页数: 11页
• 语种: 英文
• DOI: 10.1007/s11630-009-0074-9

摘要

Doppler global velocimetry (DGV) has already been shown to be an interesting technique capable of measuring the throe components of velocity in a plane. A l-component DGV system is currently under development at the LMFA, using a stabilized continuous wave (CW) argon ion laser for emission. The receiver features only one camera for both signal and reference images and incorporates a DEFI system to adjust the incident laser light frequency and its transmission coefficient on the iodine cell absorption line. A description of the whole system is presented and a validation with measurements of axial velocities at several positions in a round free jet is pro-posed.