Fully developed flow and heat transfer of water at 4° C confined between two parallel vertical walls with linearly varying wall temperatures

The title problem has been considered for detailed analysis in view of its physical application taking account of the QDT-variation in the buoyancy term. The governing equations of the problem have been reduced to two coupled non-linear ordinary differential equations, which have been solved by the linearization technique (iteration scheme) used by Ostrach. Several qualitatively interesting behaviours of the flow — and heat transfer—characteristics have been pointed out after making a comparative study of the QDT-results with the LDT-counterparts.