Influence of the Structure of Micro Premixing Chamber on the Uniformity of Flow Distribution and Premixing Characteristics

In micro combustors, the residence time of gas is dramatically reduced. It is much more important to improve combustion efficiency and stability of the micro-combustor by improving the uniformity of flow distribution and mixed results in micro premixing chamber. The flow distribution in micro premixing chamber is analyzed. The influence of micro premixing chamber structures (including the diameter of fuel inlet, numbers of arc-shaped and straight micro-channels, distance and numbers of subordinate fuel inlets) on the uniformity of flow distribution and premixing characteristics is numerical investigated. The influence of the different structure of micro premixing chamber is gained. It is an important guide for designing high efficient micro premixing devices.