Numerical study of conjugated heat transfer in metal foam filled double-pipe

Du, Yang; Qu, Zhiguo; Zhao, C.Y.; Tao, Wen‐Quan

doi:10.1016/j.ijheatmasstransfer.2010.06.002

Cited by 54 publications

(22 citation statements)

References 20 publications

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“…Each of these correlations will be assessed in this paper. Application of the two-energy equation method can be found in a number of single-phase flow studies, including: fully developed flow through a metal-foam-filled pipe [16], laminar flow in a channel passing through porous medium made of small particles [17], a double-pipe heat exchanger with metal foam inserts [18], and flow through a ceramic structure used in a solar energy receiver [19]. The present study will apply this method for a two-phase flow.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Metal-Foam Filled Liquid Piston Compressor Using a Two-Energy Equation Formulation Based on Experimentally Validated Models

Zhang

Wieberdink

Shirazi

et al. 2013

Volume 8B: Heat Transfer and Thermal Engineering

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The present study presents CFD simulations of a liquid-piston compressor with metal foam inserts. The term "liquid-piston" implies that the compression of the gas is done with a rising liquid-gas interface created by pumping liquid into the lower section of the compression chamber. The liquid-piston compressor is an essential part of a Compressed Air Energy Storage (CAES) system. The reason for inserting metal foam in the compressor is to reduce the temperature rise of the gas during compression, since a higher temperature rise leads to more input work being converted into internal energy, which is wasted during the storage period as the compressed gas cools.Liquid, gas, and solid coexist in the compression chamber. The two-energy equation model is used; the energy equations of the fluid mixture and the solid are coupled through an interfacial heat transfer term. The fluid mixture, which includes both the gas phase and the liquid phase, is modeled using the Volume of Fluid (VOF) method. Commercial CFD software, ANSYS FLUENT, is used, by applying its default VOF code, with user-defined functions to incorporate the two-energy equation formulation for porous media.The CFD simulation requires modeling of a negative momentum source term (drag), and an interfacial heat transfer term. The first one is the pressure drop due to the metal foam, which is obtained from experimental measurements. To obtain the interfacial heat transfer term, a compression experiment is done, which provides instantaneous pressure and volume data. These data are compared to solutions of a zero-dimensional compression model based on different heat transfer correlations from published references. By this comparison, a heat transfer correlation which is most suitable for the present study is chosen for use in the CFD simulation.The CFD simulations investigate two types of metal foam inserts, two different layouts of the insert (partial vs. full), and two different liquid piston speeds. The results show the influence of the metal foam inserts on secondary flows and temperature distributions.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Metal-Foam Filled Liquid Piston Compressor Using a Two-Energy Equation Formulation Based on Experimentally Validated Models

Zhang

Wieberdink

Shirazi

et al. 2013

Volume 8B: Heat Transfer and Thermal Engineering

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show abstract

“…Flow and heat transfer in a duct fully filled with metallic foams have been extensively investigated [1][2][3][4][5][6][7][8]. Calmidi and Mahajan [1] and Zhao et al [2] presented experimental and numerical studies on forced convection in metallic foams.…”

Section: Introductionmentioning

confidence: 99%

Analytical solution of forced convective heat transfer in tubes partially filled with metallic foam using the two-equation model

Tao

2011

International Journal of Heat and Mass Transfer

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106

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“…The numerical results of the present authors (Du et al, 2010) are introduced in this section. In the model, the solidfluid conjugated heat transfer process with coupling heat conduction and convection in the open-celled metallic foam, interface wall, and clear fluid in both inner and annular space in heat exchanger is fully considered.…”

Section: Numerical Modeling For Double-pipe Heat Exchangersmentioning

confidence: 99%