Miniature Metal Powdered Sintered Wick Heat Pipe (sintered heat pipe ) is a passive device which as high thermal
efficiency for heat flux in a electronic cooling. In this paper Circular heat pipe with various wick materials such as PolyPhenylene Benzo-Bisoxazole and Ultra-high-molecular-weight polyehylene and also grooved in wick structure is taken. The
necessary numerical computation are accomplished by FLUENT (the CFD solver program ) and the result are given. The
objective is to study the heat flux of grooved structure with different wick material.