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Simulation of Exhaust Gas Heat Recovery System for an Automobile
Published in 2013
This paper presents the simulation of exhaust gas heat recovery system for an automobile using COMSOL Multiphysics®. A double pipe heat exchanger is modeled in which the tube side medium is the hot exhaust gas and the shell side medium is water. The problem is divided into three parts i.e. Laminar flow in water regime, Turbulent flow in exhaust gases and Heat Transfer in solids. They are solved independently and the results are coupled subsequently. The Laminar flow problem and Turbulent flow problem are solved simultaneously taking the flow to be steady state in order to simply the problem. Whereas, Heat Transfer in solids physics in COMSOL library is used to account for the time-dependent nature of the problem.
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