Mixed boundary condition is the most difficult to apply
Notice that implies transfer of heat in the direction of increasing ‘x’. Similarly the equnimplies transfer of heat from ‘∞’ towards the ‘wall’ condition and equating these as shown in the previous slide implies convection also in the positive ‘x’ direction. This consistency is required to get proper results.
implies transfer of heat in the direction of increasing ‘x’. Similarly the equn 
implies transfer of heat from ‘∞’ towards the ‘wall’ condition and equating these as shown in the previous slide implies convection also in the positive ‘x’ direction. This consistency is required to get proper results.