抄録
Jet flow from an orifice nozzle is applicable to mixing and entraining of ambient fluid remarkably due to the vena contracta effect, but the sudden contraction at the nozzle exit accounts for a high flow resistance. In order to reduce the flow resistance remaining a better mixing performance caused by the vena contracta effect, the flow characteristics of jets from a notched orifice nozzle were examined experimentally. Hot wire measurements were conducted to demonstrate the spreading or mixing performance of the notched orifice nozzle having a reduced flow resistance of the nozzle and an increased turbulent intensity more than the conventional orifice nozzle.
