CFD Analysis of Heat Transfer and Flow Characteristics in A 3D Cubic Enclosure
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2014, Vol 4, Issue 5
Abstract
Flow arising “naturally” from the effect of density difference, resulting from temperature or concentration difference in a body force field such as gravity, the process is termed as natural convection. There has been growing interest in buoyancy-induced flows and the associated heat and mass transfer over the past three decades, because of the importance of these flows in many different areas such as cooling of electronic equipment, pollution, materials processing, energy systems and safety in thermal processes. Steady state laminar natural convection in a cubic enclosure with a cold vertical wall and two square heaters with constant temperature on the opposite wall is studied numerically. The enclosure is fitted with various liquids. Three-dimensional Navier Stokes equations are solved by employing SIMPLE algorithm. Computations are performed for a range of Rayleigh number from 104to 107 while enclosure aspect ratio varies from 0.1 to 1.25. The effects of Rayleigh number, enclosure aspect ratio, and Prandtl number on heat transfer characteristics are studied in detail. The results show that the flow field is very complex and heat transfer from the two heaters is not the same. The effect of Prandtl number is negligible in the range 5 to 100 with other parameters kept constant. This allows the use of liquids such as water for studying other dielectric liquids, provided the flow geometry and other non-dimensional parameters are similar. The overall Nusselt number increased markedly with Rayleigh Number. It is also affected by enclosure aspect ratio.
Authors and Affiliations
Mohd. Abdul Samad1 , Dr. Syed Nawazish Mehdi2 , Md. Abdul Raheem Junaidi3 , Dr. M. Manzoor Hussain4
Keywords
Related Articles
- EP ID EP131805
- DOI -
- Views 109
- Downloads 0
Integral solution of the non-homogeneous heptic equation in terms of the generalised Fibonacci and Lucas sequences
Abstract: We obtain infinitely many non-zero integer sextuples ( , , , , , ) x y z w p T satisfying the Non-homogeneous equation of degree seven with six unknowns given by 5 5 3 3 2 2 2 2 3 x y x y xy z w p T...
Optimized Projected Strategy for Enhancement of WSN Using Genetic Algorithms
This paper put forward a new strategy for selecting the most favorable cluster head in Stable Election Protocol (SEP). The planned approach selects a node as cluster head if it has the maximum energy among all the...
A Study on Dynamic and Static Clustering Based Routing Schemes for Wireless Sensor Networks
Abstract: A Wireless sensor network is an infrastructure comprised of sensing (measuring), computing, and communication elements that gives an administrator the ability to instrument, observe, and react to events a...
Solar Chimney Power Plant-A Review
Solar technology is the novel technology which uses the natural sunlight to produce electricity. It uses the combination of three simple technologies that is turbine, vertical chimney of some longer height and glass roof...
Multilevel Inverter for Grid-Connected PV System Employing Digital PI Controller with an Improved PWM Scheme
A single-phase MULTI-level Photovoltaic (PV) inverter topology for grid--connected PV systems with a novel Pulse Width-Modulated (PWM) control scheme. The inverter offers much less Total Harmonic Distortion (THD) a...