Thermal Performance Evaluation of a Double-Tube Heat Exchanger Partially Filled with Porous Media Under Turbulent Flow Regime

Jamarani, Alireza; Maerefat, Mehdi; Jouybari, Nima Fallah; Nimvari, Majid Eshagh

doi:10.1007/s11242-017-0933-x

Cited by 24 publications

(10 citation statements)

References 36 publications

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“…The complexity of the problem is exacerbated when the flow regime inside the partially filled pipe is turbulent. Although the effect of different parameters including turbulence modeling [17], porous media parameters in channel [18] and double pipe heat exchanger [23] has been previously studied by the present authors, a detailed investigation of mechanisms that are behind the heat transfer enhancement in different configurations of porous media in a pipe is of interest to reach the best thermal performance in different applications.…”

Section: Introductionmentioning

confidence: 99%

“…The importance of porous layer position on the thermal performance is so high that it has been investigated in other heat transfer devices such as microchannel and double-tube heat exchangers. Jamarani et al [23] studied the thermal performance of a double tube heat exchanger partially filled with porous media at two different configurations. They have reported that the permeability of porous media plays a more critical role when it is inserted at the core of the inner tube, while the effect of porous media thermal properties is more appreciable when the porous media is located over the wall.…”

Section: Introductionmentioning

confidence: 99%

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A comparative study of different heat transfer enhancement mechanisms in a partially porous pipe

2021

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The effect of porous material position on the heat transfer inside a pipe working in a turbulent regime is studied here to obtain a detailed understanding of the heat transfer enchantment mechanisms in different porous substrate positions. To this end, an in-house Fortran code is developed to solve the governing equations using the finite volume method and SIMPLE algorithm. Turbulent flow in porous media is modeled using a modified version of k–ε model. The flow field and heat transfer inside the partially filled pipe are investigated for the two cases of central and boundary configurations. The porous and flow characteristics including Reynolds number, Darcy number, the conductivity ratios of solid to fluid and the thickness of inserted porous layer are varied and the heat transfer performance is studied in different cases. It is observed that two entirely different phenomena enhance the heat transfer in central and boundary configurations. While the channeling of fluid between the porous media and the pipe wall highly affects the heat transfer performance in the former, the thermal conductivity of porous media plays a highly critical role in the latter configuration. It is shown that, for the same filling ratio, inserting the porous layer at the core of the pipe is more effective than placing it at the wall. Investigating porous materials with different solid conductivities revealed that covering the pipe wall with a porous material is justified only for solid matrixes with high thermal conductivities.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A comparative study of different heat transfer enhancement mechanisms in a partially porous pipe

2021

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“…These researchers proposed an optimum thickness for the porous material in order to increase the heat transfer at various inertia coefficients for a reasonable pressure loss. Jamarani et al [11] simulated the fluid flow and the heat transfer in a double pipe heat exchanger partially filled with a porous material using Darcy-Forchheimer equations and local thermal equilibrium. They used two different configurations for the porous layer.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer investigation of non-newtonian fluid flow in anannular pipe embedded with porous discs: A turbulent study

POURSHARIF

SALARIAN

JAVAHERDEH

et al. 2022

Journal of Thermal Engineering

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Porous materials are used in thermal devices such as heat exchangers to improvement the heat transfer. The heat transfer of a non-Newtonian fluid flow in an annular pipe with porous discs is numerically investigated in this paper. The flow regime in both porous medium and clear region are considered to be turbulent. The effects of power-law index of the non-Newtonian fluid and porous discs pitch variationson the heat transfer rate, friction coefficient are studied and compared to each other for two porous layer thicknesses. Finally, the thermal performance is defined which determines the optimum porous media and non-Newtonian fluid characteristics in the annular pipe.

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“…Due to its high effectiveness in the area of geology, water, oil, and gas reservoirs, double diffusion mass transfers, electrical part coolers, and heat exchangers, numerous porous media applications have been designed by several researchers. [12][13][14] Magnetic and experimental fluid flux and heat transfer studies will integrate a principle of MHD that analyses the efficiency, magnetically induced nanofluids in boundary layer flux changing the systems. In a microscopic enclosure, Sheikholeslami and Ganji 15 analyzed the magnetic-hydrodynamic CuOwater nanoliquid, regarding the form feature.…”

Section: Introductionmentioning

confidence: 99%

Parametric analysis of MHD flow of nanofluid in stretching sheet under chemical sensitivity and thermal radiation

Devi¹,

Reddy

2021

Heat Trans

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Thermal Performance Evaluation of a Double-Tube Heat Exchanger Partially Filled with Porous Media Under Turbulent Flow Regime

Cited by 24 publications

References 36 publications

A comparative study of different heat transfer enhancement mechanisms in a partially porous pipe

A comparative study of different heat transfer enhancement mechanisms in a partially porous pipe

Heat transfer investigation of non-newtonian fluid flow in anannular pipe embedded with porous discs: A turbulent study

Parametric analysis of MHD flow of nanofluid in stretching sheet under chemical sensitivity and thermal radiation

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