Investigation of film cooling effectiveness and heat transfer coefficient for rectangular holes with two rows

摘要

When the figures are investigated the film cooling effectiveness are high value in low-blowing ratios (Figures 6-8 [Figure omitted. See Article Image.]). The best blowing ratio is 0.5 in the present blowing ratios as shown in Figures 6-8 [Figure omitted. See Article Image.]. When the differences between the injection temperature and main flow temperature are increased the cooling effectiveness increases for the same blowing ratios in mainstream direction. For example, in Figure 6 [Figure omitted.