This　paper　investigates　the　radiative　heat　flux　of　annular　pool　fires　under　cross　airflow　(0–5　m/s),　a　configuration　that　has　been　underexplored　in　fire　safety　research　despite　its　relevance　in　industrial　fire　hazards.　Results　show　that　radiative　heat　flux　decreases　with　increasing　distance　from　the　fire　source　but　increases　with　higher　cross　airflow　speeds　and　larger　annular　pool　diameters　(Din/Dout).　Existing　models　overestimate　radiative　heat　flux　in　annular　pool　fires　due　to　the　underrepresented　hollow　flame　region.　A　new　modified　triangular　prism　radiation　model　was　developed　based　on　the　similarity　criterion　of　annular　pool　fires.　An　extensive　comparative　analysis　was　further　conducted,　encompassing　a　wide　array　of　experimental　configurations　documented　in　the　literature,　characterized　by　varying　diameters　spanning　from　0.1　m　to　0.7　m　and　cross　wind　velocity　ranges　extending　from　0　m/s　up　to　5　m/s.　The　results　of　this　comprehensive　examination　reveal　a　good　agreement　between　the　newly　established　model　and　the　empirical　data,　thereby　substantiating　the　model＇s　universal　applicability　and　robust　reliability.　The　new　model　will　effectively　assist　industrial　facilities　in　enhancing　fire　safety　design,　strengthening　thermal　hazard　prevention　and　control,　and　ensuring　a　higher　level　of　fire　safety　design.　©　2024　Elsevier　Ltd