Development of a High Pressure, High Temperature, Optically Accessible Continuous Flow Vessel for Fuel Injection Experiments

Abstract

A vessel has been designed for nonreacting fuelinjection experiments with continuous flow of sweep gas at pressures up to 1380 kPa and temperatures up to 200 آ°C. Four orthogonal windows provide optical access for highspeed sprayvisualization using a fastpulsed light emitting diode (LED) and a highspeed camera. Initial experiments have been conducted to determine spray characteristics of nheptane. At room conditions, liquid length and cone angle were 170 mm and 14.5 deg, respectively. With air flow in the chamber at 690 kPa and 100 آ°C, liquid length was considerably shorter at 92 mm and cone angle was wider at 16.5 deg.