Soft and hard computation methods for estimation of the effective thermal conductivity of sands - Heat and Mass Transfer
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ID: 269667
2020
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Abstract
Thermal properties of sand are of importance in numerous engineering and scientific applications ranging from energy storage and transportation infrastructures to underground construction. All these applications require knowledge of the effective thermal parameters for proper operation. The traditional approaches for determination of the effective thermal property, such as the thermal conductivity are based on very costly, tedious and time-consuming experiments. The recent developments in computer science have allowed the use of soft and hard computational methods to compute the effective thermal conductivity (ETC). Here, two computation methods are presented based on soft and hard computing approaches, namely, the deep neural network (DNN) and the thermal lattice element method (TLEM), respectively, to compute the ETC of sands with varying porosity and moisture content values. The developed models are verified and validated with a small data set reported in the literature. The computation results are compared with the experiments, and the numerical results are found to be within reasonable error bounds. The deep learning method offers fast and robust implementation and computation, even with a small data set due to its superior backpropagation algorithm. However, the TLEM based on micro and meso physical laws outperforms it at accuracy.
| Reference Key |
haider2020heatsoft
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| Authors | Rizvi, Zarghaam Haider;Zaidi, Husain Haider;Akhtar, Syed Jawad;Sattari, Amir Shorian;Wuttke, Frank;Rizvi, Zarghaam Haider;Zaidi, Husain Haider;Akhtar, Syed Jawad;Sattari, Amir Shorian;Wuttke, Frank; |
| Journal | heat and mass transfer |
| Year | 2020 |
| DOI |
doi:10.1007/s00231-020-02833-w
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| URL | |
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