On the Role of Air Flow in Air-Convection Embankments: Insights from Thermal Numerical Modeling

DOI

10.2991/978-94-6463-258-3_21How to use a DOI?

Keywords

Air-convection embankments; permafrost; numerical modeling

Abstract

Utilizing crushed rocks in air convection embankments is one of the methods adopted to facilitate heat exchange between foundation soil and the atmosphere. The relatively large pore space provided by the air convection section allows for air to overall decrease the temperature of permafrost underneath the embankment. As air flow is the main component in this approach, coupled air flow-thermal conduction has been adopted to numerically simulate the temperature distribution in air convection embankments. Such coupling, however, can be computationally expensive and rather complicated to perform. Considering the bulk thermal characteristics of air convection sections, we explore the potential of pure conduction models to model such systems. The results show a good agreement between pure conduction results, experimental data, and coupled analysis. The slight deviation of the simulation results from both experimental and coupled analysis suggests a minimal contribution of the air flow portion of previous models. The preliminary results presented in this paper indicate that pure conduction non-coupled models can be a viable, simple, and effective approach for the thermal modeling of air convection embankments.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Ahmed Ibrahim
AU  - Mohamed A. Meguid
PY  - 2023
DA  - 2023/11/08
TI  - On the Role of Air Flow in Air-Convection Embankments: Insights from Thermal Numerical Modeling
BT  - Proceedings of the Rocscience International Conference  (RIC 2023)
PB  - Atlantis Press
SP  - 199
EP  - 206
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-258-3_21
DO  - 10.2991/978-94-6463-258-3_21
ID  - Ibrahim2023
ER  -