Numerically investigation of Flow and Heat Transfer in differentially heated enclosures

In this research work natural convection in two dimensional cavity is studied numerically for differently heated air filled square and rectangular cavity. Vertical with adiabatic hot cold wall different aspect ratio of 1, 2.5, 5, 7.5 10 has taken investigation. the heat transfer was investigated over wide range Rayleigh number from 103 to 106 . Solutions are obtained several numbers Prandtl Pr = 0.70 10. The Pressure-Velocity Coupling Method used Non-Iterative Time Advancement (NITA) scheme solve problem. Flow patterns isotherm plots were display results, every case, local mean Nusselt values also produced. results show that an increase greatly increases transfer, intensity, average at a particular ratio. distribution temperature stream function as thermal geometrical output parameter given Two stage investigations have been performed find out variation result between approaches. Keyword: ANN (average number), AR (aspect ratio), LNN (local Nu (Nusselt (Prandtl Ra (Rayleigh number).