Numerical study of the laminar natural convection flow around an array of two horizontal isothermal cylinders
- INRST, Hamam (Tunisia)
- FST, Belvedere (Tunisia)
The amount of work accomplished in the area of natural convection heat transfer in interacting flow fields around an array of cylinders has increased in the last years. There is a growing demand for a better understanding of this phenomenon in areas like heat exchangers, electronic devices, solar heating and storing technology among others. Here, natural convection heat transfer from an array of heated cylinders has received attention in recent years. However, most of the previous investigations has been experimental and has been restricted to the influence of geometrical parameters on the overall heat transfer. The present work is devoted to the numerical study of laminar natural convection flow from an array of two horizontal isothermal cylinders. This work, that enters within the framework of general study dealing with an array of several cylinders, states the problem in Cartesian coordinates system, involves the use of a control-volume method and solves the full vorticity transport equation together with the stream function and energy equations. The modifications of the average Nusselt number evolution compared with the single cylinder are explained in terms of velocity and temperature fields of the flow around the cylinders. Results are obtained for variety of combinations of spacing and numbers of Rayleigh.
- OSTI ID:
- 343665
- Journal Information:
- International Communications in Heat and Mass Transfer, Vol. 26, Issue 3; Other Information: PBD: Apr 1999
- Country of Publication:
- United States
- Language:
- English
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