Effect of Boundary Layer on Choked Flow through a Rectangular Convergent Nozzle

Abstract

The experimentaI results 〔 ｝f the ch 〔， king pressure ratio and the choked 日ow rate in u c nverging nezzle are con ／ pared with three theoretical values calculated by the Fanno 且 w theory ， the compound fioLv mode1 ， and thc average now rn 〔 〕deL The experiment ． atvalues are in qualita 亡 ive agreenler ユt with the calculated va ］ ues in any of these cases ， and agree best with the 、 ・ alucs by し he average 飾 w m σde1 ． Based upon thcse compar 孟 sons ， the mechanism of the choking of the flow where し he velocity distTibutic 〕ll is n ｛ 〕t uniform due to the beundary 】 ayer is rnade dear ，