NATURAL CONVECTION IN A CAVITY WITH A BLOCK MOUNTED ON IT

Yıl 2002, Cilt: 4 Sayı: 1, 53 - 62, 01.01.2002

İhsan Dağtekin Hakan F Öztop

Öz

In this study natural convection in a cavity with a block mounted on a vertical wall was
investigated numerically. The effects of the placement and, the dimensions of block on natural
convection were studied. The block mounted vertical wall was warmer than the outer vertical
wall and block itself was insulated perfectly. A SIMPLEM algorithm was used based on finite
control volume approach for calculations. Calculations were performed in the range of
103

Anahtar Kelimeler

Natural Convection, Horizontally Divided Cavity, Non-staggered grid, SIMPLEM algorithm

DÜŞEY CİDARINA BLOK MONTE EDİLMİŞ BİR OYUKTA DOĞAL TAŞINIM İÇİN SAYISAL BİR ÇALIŞMA

Öz

Düşey duvarına blok monte edilmiş oyuk içerisinde, bloğun yeri ve boyutunun doğal
taşınım üzerindeki etkisi sayısal olarak incelenmiştir. Bloklar tamamen yalıtımlı ve blok
yerleştirilmiş düşey duvarın diğer duvara göre daha sıcak olduğu kabul edilmiştir. Problem
için zamana bağlı olmayan çözümler elde edilmiştir. Hesaplamalar Rayleigh sayısının
104

Anahtar Kelimeler

Doğal Taşınım, Yatay olarak bölünmüş oyuk, Şaşırtmasız grid, SIMPLEM algoritma

Kaynakça

• Acharya S., Moukalled F.H. (1989): “Improvements to Incompressible Flow Calculation on a Nonstaggered Curvilinear Grid”, Numerical Heat Transfer, Part B, vol.15, p.131-152.
• Aydın O., Ünal A., Ayhan T. (1999): “Natural Convection in Rectangular Enclosures Heated from One Side and Cooled from the Ceiling”, Int. J. Heat and Mass Transfer, N.42, p. 2345-2355.
• Davis G.V. (1983): “Natural Convection of Air in A Square Cavity: A Bench Mark Numerical Solution”, Int. J Numerical Methods in Fluids, N.3, p. 249-264.
• Ettefagh J., Raisee M., Ashjaee M. (1992): “The Effects of Horizontal Baffles on Buoyancy- Induced Flows in Vertical Enclosures”, Proceedings of the Eng. Sysytms Design and Analysis, Heat Transfer, V.47-3, p. 5-14.
• Khan J.A., Yao G.F. (1993): “Comparison of Natural Convection of Water and Air in a Partitioned Rectangular Enclosure”, Int. J. Heat Mass Transfer, V. 36, N.12, p.3107-3117.
• Lin N.N., Bejan A. (1983): “Natural Convection in a Partially Divided Enclosure”, Int. J. Heat Mass Transfer, V. 26, N. 12, pp.1867-1878.
• Mallinson G.D., Davis G. V. (1977): “Three-Dimensional Natural Convection İn A Box:A Numerical Study”, J. Fluid Mech., N.83, p. 1-31.
• Patankar S.V. (1980): “Numerical Heat Transfer and Fluid Flow”, Hemisphere, Newyork.
• Zimmerman E., Acharya S. (1987): “Free Convection Heat Transfer İn A Partially Divided Vertical Enclosure With Conducting End Walls”, Int. J. Heat Mass Transfer, V. 30, N.2, p. 319-331.