Design of a Perforated Plate for Flow Homogenisation of Air Flowing into a Honeycomb from a Pipe Connected to the Header Section Inlet

抄録

To achieve a uniform flow in a honeycomb filler, a new type of perforated plate was developed for installation inside the header located upstream of the honeycomb. The homogenisation effect was evaluated based on the pressure loss and standard deviation of the velocity. Compared to the unmodified perforated plate parameters, the maximum flow velocity near the centre of the improved perforated plate reduced to values ranging between approximately 1/17 and 1/10, and the standard deviation decreased to values ranging between approximately 1/38 and 1/9 in each honeycomb.