EXPERIMENTAL STUDY OF MEAN DROPLET SIZE FROM PRESSURE SWIRL ATOMIZER
Journal: INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE TECHNOLOGIES (Vol.4, No. 6)Publication Date: 2020-12-31
Authors : Sherry Kwabla Amedorme;
Page : 49-59
Keywords : Pressure-Swirl Nozzle; Sauter Mean Diameter (SMD); Injection Pressure; Axial Distance; Radial Distance;
Abstract
This experimental study undertakes the measurements of droplet Sauter Mean Diameter (SMD) at different axial distances for the hollowcone nozzle and different radial distances from the spray centreline using a laser-diffraction-based drop size analyser in order to validate atomization model. The study also investigates the influence of injection pressure and the evaluation of two exit orifice diameters on the Sauter Mean Diameter (SMD). The drop size distributions along the nozzle centreline as well as the radial drop distributions from spray centreline are also evaluated. To enhance the physics of liquid sheet instability and liquid film breakup mechanisms, visualization of liquid film breakup as a function of injection pressure was carried out. The results show that mean droplet size (SMD) increases in the axial distance on the spray centreline but decreases with an increasing injection pressure on the spray centreline. It was observed that larger sized drops occupy the spray periphery compared to those occupying the spray core. For the nozzle exit orifice diameters of 3.5 mm and 1.5 mm, the results show that the small nozzle exhibits smaller SMDs than the bigger nozzle and the break-up lengths are different for the two nozzles. The drop size distributions at radial positions showed an increase in droplet formation through the spray downstream distances and become more uniform. The visualisation of the spray was carried out using high-speed camera and it was noted that a well-defined hollow-cone spray was captured and that the spray angle increases with the injection pressure but reduces with the liquid film length.
Other Latest Articles
- SOCIOLOGICAL AND STATISTICAL ANALYSIS BASED ON SURVEY AT THE YEREVAN AMERICAN CORNER
- INFLUENCE OF MECHANICAL AND PHYSICAL PROPERTIES OF PALM NUT SHELL- PLASTIC COMPOSITE
- PHARMACOGNOSTIC INVESTIGATION, ISOLATION, CHARACTERIZATION AND CONFIRMATION OF THE STRUCTURE OF PHENACETINE EXTRACTED FROM THE DRIED POWDERED LEAVES OF TRADITIONAL MEDICINAL PLANT ALLOPHYLUS AFRICANUS USED FOR THE TREATMENT OF PAIN, FLU AND HEAD ACHE
- USING INTERNET AND EDUTECH BECOME A PRIMARY NEED RATHER THAN A LUXURY - THE REALITY: A NEW SKILLED EDUCATIONAL SYSTEM - DIGITAL UNIVERSITY CAMPUS
- THE FINANCIAL CRISIS: WHAT IMPACT ON THE ECONOMY AND ON THE FINANCIAL MARKET?
Last modified: 2021-01-08 17:08:30