Two-Relaxation-Time Lattice Boltzmann Method and its Application to Advective-Diffusive-Reactive Transport
Journal Article
·
· Advances in Water Resources
- Tianjin Univ., Tianjin (China). Inst. of Surface-Earth System Science
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Columbia Univ., New York, NY (United States). Dept. of Environmental Health Sciences
The lattice Boltzmann method (LBM) based on single-relaxation-time (SRT) or multiple-relaxation-time (MRT) collision operators is widely used in simulating flow and transport phenomena. The LBM based on two-relaxation-time (TRT) collision operators possesses strengths from the SRT and MRT LBMs, such as its simple implementation and good numerical stability, although tedious mathematical derivations and presentations of the TRT LBM hinder its application to a broad range of flow and transport phenomena. This paper describes the TRT LBM clearly and provides a pseudocode for easy implementation. Various transport phenomena were simulated using the TRT LBM to illustrate its applications in subsurface environments. These phenomena include advection-diffusion in uniform flow, Taylor dispersion in a pipe, solute transport in a packed column, reactive transport in uniform flow, and bacterial chemotaxis in porous media. Finally, the TRT LBM demonstrated good numerical performance in terms of accuracy and stability in predicting these transport phenomena. Therefore, the TRT LBM is a powerful tool to simulate various geophysical and biogeochemical processes in subsurface environments.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1395283
- Alternate ID(s):
- OSTI ID: 1844595
- Report Number(s):
- PNNL-SA--125138; PNNL-SA-125138; PII: S0309170816307680
- Journal Information:
- Advances in Water Resources, Journal Name: Advances in Water Resources Vol. 109; ISSN 0309-1708
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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