Non-Equilibrium Thermodynamic Analysis of Double Diffusive, Nanofluid Forced Convection in Catalytic Microreactors with Radiation Effects

作者: Lilian Govone , Mohsen Torabi , Graeme Hunt , Nader Karimi

DOI: 10.3390/E19120690

关键词: Porous mediumHeat fluxMicrochannelForced convectionMechanicsThermalConvectionNanofluidNusselt numberMaterials science

摘要: This paper presents a theoretical investigation of the second law performance double diffusive forced convection in microreactors with inclusion nanofluid and radiation effects. The investigated consist single microchannel, fully filled by porous medium. transport heat mass are analysed including thick walls first order, catalytic chemical reaction on internal surfaces microchannel. Two sets thermal boundary conditions considered external microchannel; (1) constant temperature (2) flux condition lower wall convective upper wall. local non-equilibrium approach is taken to thermally analyse section system. dispersion equation coupled flow through consideration Soret effect. problem analytically solved illustrations fields, Nusselt number, total entropy generation rate evaluation criterion (PEC) provided. It shown that effect tends modify behaviour within parameter also reduces overall further demonstrated that, expectedly, nanoparticles reduce system increase number. consequently PEC shows strong relation volumetric concentration nanoparticles.

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