同轴旋转分层流燃烧器空气动力场中一次风转捩长度的研究

Research of Twisted Length on Air Dynamic Field of Coaxial Swirl Stratified Flow Combustor

运用CCD摄像机对同轴旋转分层流低NOx燃烧器出口空气动力特性进行了可视化研究,并对采集的图像进行了一系列处理。对一次风边界转捩长度b进行了定义,分析了一次风边界转捩长度的影响,并对其变化规律进行了研究,为同轴旋转分层流燃烧器分层机理的研究打下了基础。

Air dynamic field in the original coaxial swirl stratified flow low NOx combustor exit has been studied by virtual experiment with CCD video. The obtained images are processed systematically. The twisted length has been defined. It shows some inflnence factors on twisted length. Through this experiment, we research and twisted length＇s change law, which is the spade work to study stratification mechanism of coaxial swirl stratified flow combustor.