کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
264430 | 504100 | 2011 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Unsteady natural convection in a triangular enclosure under isothermal heating Unsteady natural convection in a triangular enclosure under isothermal heating](/preview/png/264430.png)
The fluid flow and heat transfer inside a triangular enclosure due to instantaneous heating on the inclined walls are investigated using an improved scaling analysis and direct numerical simulations. The development of the unsteady natural convection boundary layer under the inclined walls may be classified into three distinct stages including a start-up stage, a transitional stage and a steady state stage, which can be clearly identified in the analytical and numerical results. A new triple-layer integral approach of scaling analysis has been considered to obtain major scaling relations of the velocity, thicknesses, Nusselt number and the flow development time of the natural convection boundary layer and verified by direct numerical simulations over a wide range of flow parameters.
Journal: Energy and Buildings - Volume 43, Issues 2–3, February–March 2011, Pages 695–703