When there is no impingement, the investigation about flow extravasation effect form film cooling holes is carried out with different cross flow Reynolds Numbers and different density flow ratios of the film outflow to cross flow.

• 在无冲击射流时，通过改变来流雷诺数、气膜出流与横流密流比，对气膜孔的“溢流效应”进行了研究。