21409 直管から噴出する高速脈動流の流れ場について(流体工学(4))

概要

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The high-speed pulsating flow is found in the exhaust system of the reciprocating internal combustion engine, the piping system connected to reciprocating compressor, etc., and has various features which never exist in the steady flow. This work is concerned with an experimental study of the high-speed pulsating flow in a straight pipe and the jet discharged by the pipe. The pulsation is generated by disk-type rotary valve at upstream end of the pipe, and frequency of pulsation can be varied by changing the rotating speed of the valve. The measurement is performed for different pressure ratios of plenum tank to atmosphere at different speeds of the rotary valve. A new static probe was designed to apply to supersonic unsteady jet, and the static pressure histories were measured. The static pressure distributions in the flow field were compared with the visualized schlieren pictures and discussed
一般社団法人日本機械学会の論文
2007-03-15