Volume 3: Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat Transfer in Electronic 2013
DOI: 10.1115/ht2013-17577 View full text |Buy / Rent full text
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Abstract: Simulations of lithium ion batteries on a cell level are usually performed with volume averaging methods that employ effective transport properties. Bruggeman’s model, which is widely used to determine these effective properties, is solely based on the volume fraction of these porous electrodes. However, other factors like the topology and microstructure of electrodes also play a crucial role in determining effective properties. In this paper, a general derivation of the effective thermal conductivity of multi… Show more

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“…Since the interface between phases is no longer represented, the interfacial reactions described in the previous section are averaged over the entire REV and act as volumetric source/sink terms for each material. I nstead of t he intrinsic properties of t he various constituents, these models employ effective transport properties that are analytically derived based on various geometric simplifications such as uniformly sized spherical active material particles [14]. Volume-averaging a cell sandwich effectively reduces the equations to be onedimensional, since the only direction of transport is between the current collectors on either end of the battery.…”
Section: Volume-averaged Modeling and Simulationmentioning
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“…Since the interface between phases is no longer represented, the interfacial reactions described in the previous section are averaged over the entire REV and act as volumetric source/sink terms for each material. I nstead of t he intrinsic properties of t he various constituents, these models employ effective transport properties that are analytically derived based on various geometric simplifications such as uniformly sized spherical active material particles [14]. Volume-averaging a cell sandwich effectively reduces the equations to be onedimensional, since the only direction of transport is between the current collectors on either end of the battery.…”
Section: Volume-averaged Modeling and Simulationmentioning
“…The reconstructed geometry obtained from these methods can provide detailed information about active particle shape and size, which can be used to generate more realistic synthetic computational geometries that are not limited to spherical particle shapes. Furthermore, through the use of specialized software, the reconstructed geometries can be converted directly into a finite volume/element mesh for numerical simulations [41] [14]. Performing transport simulations on these fully resolved synthetic and real geometries, explicitly partitioned into various constituent phases, can be termed as particle-scale or pore-scale modeling [42] [43] [44] [45] [46].…”
Section: Particle-scale Simulationsmentioning
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