Small scale mixing enhancement of fuel/air using multi-source vortex technology

With the multi-source vortex(MSV) structure fixed on the exit plane of axial swirler,the flow field of combustor was simulated and the effect of MSV on the mixing enhancement of fuel/air was studied.The total temperature of the air inlet was 294.28K and the fuel was ethane(C₂H₆).The results indicate that,a small scale streamwise vortex is produced downstream each tab,helping enhance the local mixing of fuel and air.The mixing non-uniformity is 13.0% for combustor without MSV,while it declines to smaller than 7.4% with MSV.The mixing non-uniformity decreases when the total blockage of tabs increases,indicating a mixing enhancement of fuel/air.