TURBULENT HEAT TRANSFER FOR PIPE FLOW WITH PRESCRIBED WALL HEAT FLUXES AND UNIFORM HEAT SOURCES IN THE STREAM.

TURBULENT HEAT TRANSFER FROM FLUID WITH INTERNAL HEAT GENERATION HAS RECEIVED CONSIDERABLE ATTENTION.THIS AREA OF STUDY IS SIGNIFICANT IN THE DESIGN OF FLUID-FUELED NUCLEAR REACTORS, ELECTRO-MAGNETIC PUMPS, FLOW METERS, AND SOME CHEMICAL PROCESS EQUIPMENT.THE PROBLEM OF TURBULENT GENERATING FLOW WAS FIRST INVESTIGATED BY POPPENDIEK AND FURTHER STUDIED BY OTHERS.ALL OF THE EARLIER THEORETICAL ANALYSES IN THIS FIELD WERE BASED ON THE CLASSICAL EDDY DIFFUSIVITY MODEL.HOWEVER, THIS APPROACH LED TO EXACT SOLUTIONS FOR THE HEAT TRANSFER COEFFICIENT OR WALL TEMPERATURE THAT WERE TOO INVOLVED FOR ENGINEERING COMPUTATIONS.IN THE PRESENT WORK, THE SAME PROBLEM IS ATTACKED BY A DIFFERENT APPROACH WHICH MAKES USE OF THE PRINCIPLE OF SURFACE RENEWAL: EMPHASIS IS PLACED ON MODERATE PRANDTL NUMBERS.(FROM JNL.).