Theoretical studies on forced convection in a variety of configurations

Incompressible forced convection heat transfer problems normally admit an extremely important simplfication: the fluid flow pro in can be solved without reference to the temperature distribution in the fluid Thus, it can first find the velocity distribution and then put it in the energy equation as known information and solve for the temperature distribution. Our aim in this paper is to present the analysis of a few problems and to show the progression toward increasingly empirical solutions as the problems become progressively more unwieldy. As in any forced convection problem, it first describe the flow field. This description will include a number of ideas that apply to turbulent as well as laminar flow. The velocity profile changes greatly near the inlet to the pipe. A b.l. builds up from the front, generally accelerating the otherwise undisturbed core. The b.l. eventually occupies the entire flow area and defines a velocity profile that changes very little thereafter. In this paper it is intended to expand the theoretic researches concerning heat processes intensfication and their use in industrial practice. In conchision the fundamental research with concrete technical applications represent a significant contribution to the development of knowledge in domain.