Heat transfer to a flowing thermally softened polymer(Polymethyl methacrylate) has been studied. Experimental temperature profiles were determined at various axial lengths. The data are both precise and reproducible. Sizable viscous dissipation was f...
Heat transfer to a flowing thermally softened polymer(Polymethyl methacrylate) has been studied. Experimental temperature profiles were determined at various axial lengths. The data are both precise and reproducible. Sizable viscous dissipation was found to occur. This effect was found to be greater for polymethylmethacrylate than a molten polymer(polyethylene). The experimentally determined data were checked qualitatively with the data computed from a prior analytical solution of the equations of motion and energy.