Numerical analysis of natural convection in a triangular cavity with different configurations of hot wall

Triveni, Manoj Kr.; Panua, Rajsekhar

doi:10.18280/ijht.350102

Cited by 26 publications

(17 citation statements)

References 29 publications

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“…Three types of boundary conditions were applied in this study; Inlet, outlet and wall. At the input of the combustion chamber all values of different parameters are measurements; like the velocities (U, V, W) species and turbulent kinetic energy by a specifically UDF algorithm of profiles type [26][27][28]. Except dissipation of turbulent kinetic energy which is calculated by this equation:…”

Section: Solving Methodsmentioning

confidence: 99%

Numerical study of the swirl direction effect at the turbulent diffusion flame characteristics

Lalmi¹,

Hadef²

2017

IJHT

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The paper presents a numerical prediction of reacting flow field and temperature distribution of turbulent diffusion flame in two air blast nozzle swirling flow namely co and counter with different swirl intensities. This quantity is 0.46 for the central flow and ± 1.0 for the annular flow. Current study was focus on the rotation effect of the secondary flow. The calculated results were validated on real time through laser anemometry for both cases. The reasons behind the choice of this issue is that it is realistic in the industry but with a larger scale and our possession of the experimental values to validate the simulation. The use of two flows produced less NOx than a single flow due to its high capacity which homogenizes the temperature in the burner. The obtained results show that LES had successfully predicted the recirculation zones (CTRZ and CRZ) and the PVC with good precision.

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Section: Solving Methodsmentioning

confidence: 99%

Numerical study of the swirl direction effect at the turbulent diffusion flame characteristics

Lalmi¹,

Hadef²

2017

IJHT

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“…Maria [19] is using this code for two 2-D models of a rectangular geometry at large different temperature. Triveni et al [20] examined the effect of different geometrical configuration of the base wall of a right triangular cavity on heat transfer rate using the commercial computational fluid dynamics code Fluent to analyse and simulate the model.…”

Section: Figure 2 Mesh Independencymentioning

confidence: 99%

Natural convection in tilted rectangular cavities due to bidirectional temperature gradient

Benyoucef¹,

Zeroual²,

Benmoussa³

2017

IJHT

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The study by the CFD for a 3D natural convection in a tilted rectangular cavity filled by silicone oil at high Prandtl number has been compared to experimental results. A constant vertical temperature gradient has been performed by subjecting the horizontal walls to temperature Th and Tc; respectively. Other walls are adiabatic except the left small sidewall is differentially heating with temperature TA creating the horizontal temperature gradient. Different values of the lateral heating and the tilt with respect to the horizontal plane are imposed. The results draw dynamic maps. The influence of two factors (TA and ) on the flow pattern and on the convective heat transfer are analysed and discussed. The simulation flow pattern results are close to those obtained experimentally for treated cases with a minimum discrepancy between the both. A spectral analysis is done to show the fluctuations seen on the natural convective flow after the stability caused by the lateral heating and tilted angle; which based on the visualization of the amplitude as a function to the frequency. The results also show a significant impact on the flow fields and the heat transfer performance is improved.

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“…The exploration of the heat transfer through free convection in enclosures with irregular shapes play a prominent role in industrial applications and hence it has become a subject of interest in these present days. However, enclosures like triangular shaped have received a paramount attention in many practical appliances, for example, thermal environment of buildings, solar energy systems, cooling of electronics equipment, geophysics, nuclear power plant, heat exchanger and many other applications involving heat transfer due to its geometry [1][2][3][4]. Morsil and Sabeur-Bendehina [5] conducted numerical study for natural convection in a wavy square enclosure.…”

Section: Introductionmentioning

confidence: 99%

Free Convection in a Caterpillar Shaped Triangular Enclosure Filled with Different Nanofluids

Triveni¹,

Panua²

2019

IJHT

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A numerical work is conducted for the free convection in a right triangular cavity filled with water-based nanofluids. The bottom wall is in a caterpillar wavy shape which is assumed as a hot wall whereas the rest walls of the enclosure are considered as a cold wall. Governing equations of the problem are discretized through the finite volume method. The present study is undertaken to appraise the effect of the constrained parameters i.e. various types of nanofluids (TiO2, CuO, and Al2O3), volume fractions of thenanoparticles and Rayleigh number (Ra=10 5 -10 7 ). The higher augmentation in the rate of heat transfer is observed for the Al2O3-water-based nanofluid for each Rayleigh number.

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Numerical analysis of natural convection in a triangular cavity with different configurations of hot wall

Cited by 26 publications

References 29 publications

Numerical study of the swirl direction effect at the turbulent diffusion flame characteristics

Numerical study of the swirl direction effect at the turbulent diffusion flame characteristics

Natural convection in tilted rectangular cavities due to bidirectional temperature gradient

Free Convection in a Caterpillar Shaped Triangular Enclosure Filled with Different Nanofluids

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