Abstract
Structures of two interacting free jets with different source pressure are Studied by flow visualization. Angles between jet axes are set at θ=45° and 180°. Experiments are carried out for various source pressure ratios and various ratios of the source pressure to the pressure in the expansion chamber. For θ=45°, many types of flow field appear with respect to the source pressure ratio and the structures of these flow fields are classified into four patterns according to their shock systems. For θ=180°, structures of the flow field are divided roughly into four types depending on the condition of the source pressure and the pressure in the expansion chamber. Specifically, stable and unstable flows in the interacting region are found for the equal pressure ratios.
