Etude numérique d’un écoulement turbulent à l’intérieur d’un échangeur de chaleur muni d’ailettes

Abstract

n industrial companies the heat exchanger is an essential element for the control of the energy, the problems relating to the thermo hydraulic concern above all the thermal dimensioning of the apparatuses. For this, in this work we will study numerically the dynamic and thermal behavior of a turbulent flow in a coaxial bi-tubular heat exchanger. Study of the effect of the orientation of the two fluids in the single-tube heat exchanger was performed to confirm that the case against current has good results compared to the case Co-current. To improve its thermal performance, a fin tube heat exchanger has also been studied and compared with the simple case. After, the losses of charges are a fundamental element of the flow of the liquids because they appear for all the liquids, one must therefore think of a compromise between the increase of the temperature and the pressure. This study was carried out using the software "FLUENT" which is based on the method of the finished volumes.