Heat flux with convection and radiation loss -- CFD Online Discussion Forums

February 11, 2016, 05:08	Heat flux with convection and radiation loss	#1
kcgmech New Member Ganesh K C Join Date: Oct 2014 Location: Tiruchirappalli, India Posts: 29 Rep Power: 12	Dear Fluent user, Need clarification on the following. during welding / weld pool simulation (2D), gaussian heat flux is applied on the top surface where the convection and radiation loss also need to be assigned. how to assign the heat flux and heat loss boundary on same surface ? gaussian heat flux equation: q = ( 3Q/pi r^2 ) * exp (-3x^2 / r^2) heat transfer coefficient for combinded convection and radiation loss: h = 2.410^-3 emissivity * T^1.61 how to make UDF for (q - heat loss) ? __________________ -- K.C.Ganesh Research Scholar NIT Trichy India

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