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INVESTIGATION OF CONVECTIVE HEAT TRANSFER IN A TUBE WITH A TWISTING FLOW OF CONSTANT PITCH LENGTH
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
ONE OF THE EXISTING METHODS TO INTENSIFY CONVECTIVE HEAT TRANSFER IS THE HYDRODYNAMIC METHOD BASED ON THE USE OF THE AERODYNAMIC POSSIBILITIES OF A TWISTING FLOW AS A METHOD TO INTENSIFY CONVECTIVE HEAT TRANSFER IS EXAMINED WHICH LEADS TO A BETTER UTILIZATION OF THE INITIAL SECTION OF THE TUBE, THUS BRINGING ABOUT ACTUAL CONDITIONS FOR DEVELOPING HEAT EXCHANGERS FOR STRAIGHT SHORT TUBES. Analysis is confined to swirling flows with a constant pitch length which are produced by using internal curvilinear inserts with a relative pitch sd from 0.95 to infinity. Author