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- W1972506548 abstract "This paper examines numerically the heat transfer enhancement in a pipe partially filled with a porous medium under local thermal non-equilibrium (LTNE) condition. The flow inside the porous material is modelled using the Darcy–Brinkman–Forchheimer model. The effect of different parameters such as, inertia (F), Darcy number (Da), conductivity ratio, porosity and particle diameter on the validity of local thermal equilibrium (LTE) are studied. The optimum porous thickness for heat transfer enhancement under varying F and with reasonable pressure drop is determined. The pipe wall is under constant wall temperature boundary condition. Two models are considered at the interface between the porous medium and the fluid. The differences between these models in predicting the temperature of the fluid and solid phases as well as the Nusselt (Nu) number for different pertinent parameters are discussed. In general, the two interface models result in similar trends of Nu number variation versus porous thickness ratio. However, considerably different values of Nu number are obtained from the two interface models. The effects of inertia term on the Nu number and pressure drop are further studied. For a given model and for Da < 10−3, the Nu number is found independent of F. However, for Da > 10−3 as F increases the computed Nu number increases." @default.
- W1972506548 created "2016-06-24" @default.
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- W1972506548 date "2014-01-01" @default.
- W1972506548 modified "2023-10-17" @default.
- W1972506548 title "Numerical investigation of heat transfer enhancement in a pipe partially filled with a porous material under local thermal non-equilibrium condition" @default.
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- W1972506548 doi "https://doi.org/10.1016/j.ijheatmasstransfer.2013.09.020" @default.
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