Thermal DEM - RN Model

A Thermal Discrete Element Method (TDEM) framework designed to estimate the effective thermal conductivity of granular beds. This framework operates akin to a resistor network approach, accounting for both contact conduction and gap conduction. Moreover, it addresses the impact of reducing gas pressure on conductivity, known as the Smoluchowski effect.

If you find the codes beneficial for your work, please consider citing one or more of the following articles where these codes have been employed:

1. Akhil R Peeketi, Marigrazia Moscardini, Akhil Vijayan, Yixiang Gan, Marc Kamlah, Ratna K Annabattula. “Effective thermal conductivity of a compacted pebble bed in a stagnant gaseous environment: An analytical approach together with DEM.” Fusion Engineering and Design 130 (2018) pp.80-88
2. Raghuram K Desu, Akhil R Peeketi, Ratna K Annabattula. “Artificial Neural Network-based prediction of effective thermal conductivity of a granular bed in a gaseous environment.” Computational Particle Mechanics 6 (2019) pp.503-514
3. Akhil R Peeketi, Raghuram K Desu, Pramod Kumbhar, Ratna K Annabattula. “Thermal analysis of large granular assemblies using a hierarchical approach coupling the macro-scale finite element method and micro-scale discrete element method through artificial neural networks.” Computational Particle Mechanics 6 (2019) pp.811-822
4. Akhil R Peeketi, Marigrazia Moscardini, Simone Pupeschi, Yixiang Gan, Marc Kamlah, Ratna K Annabattula. “Analytical estimation of the effective thermal conductivity of a granular bed in a stagnant gas including the Smoluchowski effect.” Granular Matter 21 (2019) 93
5. Raghuram K Desu, Akhil R Peeketi, Ratna K Annabattula. “Influence of bed conditions on the effective thermal conductivity of ceramic breeder pebble beds using thermal DEM (TDEM).” Fusion Engineering and Design 159 (2020) 111767

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Authors: Akhil Reddy Peeketi, Website: https://www.arpeeketi.com/, Email: akhilreddy71196@gmail.com, Affiliation: Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, INDIA.

Ratna Kumar Annabattula, Website: https://home.iitm.ac.in/ratna/, Email: ratna@iitm.ac.in, Affiliation: Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, INDIA.