Abstract

Supersonic axisymmetric jets issuing from various kinds of nozzles with a throat diameter of a few millimeters were experimentally investigated. The exit Mach number and Reynolds number based on the throat diameter of nozzle were in the range of 1.0 ~ 5.9 and 8.4$\times$ $10^4$ ~ 2.9$\times$$10^6$, respectively. The nozzle pressure ratio was varied from 5 to 85. Present paper aims to offer fundamental information of the supersonic free-jets, with an emphasis to give data with which the shape of the free-jets can be depicted under a specified condition. Experimental data are summarized to enable an estimation of the shape of the supersonic free-jets. The result shows that the shape of free-jets is dependent on only the nozzle pressure ratio.

Keywords

• Compressible Flow;
• Correct Expansion;
• Expansion Wave;
• Gas Atomization;
• Mach Disk;
• Shock Wave;
• Supersonic Nozzle;
• Supersonic Jet

• 압축성흐름;
• 적정팽창;
• 팽창파;
• 가스미립화;
• 마하디스크;
• 충격파;
• 초음속 노즐;
• 초음속 제트;