Date of download: 11/9/2017 Copyright © ASME. All rights reserved. From: Characteristics of Flame Modes for a Conical Bluff Body Burner With a Central Fuel Jet J. Eng. Gas Turbines Power. 2013;135(9):091507-091507-9. doi:10.1115/1.4024951 Figure Legend: Flame diagram. —: unstable limit; – –:blowout limit; -·-: boundary of split flames. The numbered symbols indicate typical conditions discussed in the following. ★: stable flames at laminar air flow; ◀: stable flames at transitional-state air flow; ●: stable flames at turbulent air flow; △: split-flashing flame; ○: split flame; ♦: lift-off flame.