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Show ^ on water flow modeling are given by SpaldingO) and by Clarke, Gerrard and Holliday(2). These sources recommend that the bulk velocity ratio and the mass-flow ratio between the two streams entering the model should have the same values as in the real combustor, rather than attempting to match Reynolds numbers or to maintain the areas of the two streams in the same ratio. Data from water flow models scaled In this way have been found to agree well with real combustor performance data, provided that due consideration is given to the effects of spatial density gradients and the temporal density fluctuations produced by chemical reactions or the evolution of heat, which cannot be simulated with cold flow modeling. The LMF secondary combustor, shown in Figure 1, is a 1.22m square, refractory lined duct. The section where the secondary air is injected has two converging walls which form a 25% (1.22m x 0.9 Ira) restriction in » 57.2 m (2 W > 1W.3 m (TVP.) (4 1/2") VIEW A-A <4'-0") (H'-O" Figure 1. Secondary Combustor Schematic. 3 |