Impacts of using porous corner partitions and blade shaped nanoparticles in base fluid on the performance improvement of TEG mounted vented cavities and interface temperature estimation with POD
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引用次数: 0
Abstract
A unique technique for improving the performance of a thermoelectric
generator (TEG) positioned between vented cavities is proposed. The method
combines the effects of blade-shaped nanoparticles in the base fluid and corner porous partitions. The numerical study by using finite element method
is conducted for different values of Darcy number of upper and lower cavity
(10−6 ≤ Da1 ≤ 10−2
, 10−6 ≤ Da2 ≤ 10−2
), opening ratio (SR between 0.5
and 2.5) and nanoparticle loading amount (SVF between 0 and 0.03). By
adjusting the permeability of the partitions and opening ratio of the cavities,
significant changes in the flow field can be obtained. TEG power increases
with greater opening ratios and lower partition permeabilities. By changing the permeability, the TEG power can increase by up to 27.5 percent while increasing the opening ratio from SR=0.5 to SR=1 can increase the
TEG power by up to 140 percent. Using blade-shaped nanoparticles results
in additional improvements, with values of 32.7% at SR=0.5 and 20.26% at
SR=2.5. Using 180 parametric computational fluid dynamics cases, a PODbased low-cost reconstruction model is created for the interface temperatures
at the hot and cold sides using 5-POD modes. The approach enables quick
computation of couped TEG- vented cavity systems with corner partitions
and is applicable to other complex geometries where 3D computations are
expensive.
期刊介绍:
The Journal of Porous Media publishes original full-length research articles (and technical notes) in a wide variety of areas related to porous media studies, such as mathematical modeling, numerical and experimental techniques, industrial and environmental heat and mass transfer, conduction, convection, radiation, particle transport and capillary effects, reactive flows, deformable porous media, biomedical applications, and mechanics of the porous substrate. Emphasis will be given to manuscripts that present novel findings pertinent to these areas. The journal will also consider publication of state-of-the-art reviews. Manuscripts applying known methods to previously solved problems or providing results in the absence of scientific motivation or application will not be accepted. Submitted articles should contribute to the understanding of specific scientific problems or to solution techniques that are useful in applications. Papers that link theory with computational practice to provide insight into the processes are welcome.