TY - JOUR TI - A review on analytical techniques for natural convection investigation in a heated closed enclosure: Case study AU - Minea Alina Adriana JN - Thermal Science PY - 2015 VL - 19 IS - 3 SP - 1077 EP - 1095 PT - Article AB - The aim of this paper is to present a theoretical analysis of a few convection problems. The investigations were started from the geometry of a classic muffle manufactured furnace. During this analytical study, different methodologies have been carefully chosen in order to compare and evaluate the effects of applying different analytical methods of the convection heat transfer processes. In conclusion, even if there are available a lot of analytical methods, natural convection in enclosed enclosures can be studied correctly only with numerical analysis. Also, in this article is presented a case study on natural convection application in a closed heated enclosure.