Summary
Ang Liu is an Assistant Professor in the Department of Mining and Metallurgical Engineering at the Â鶹´«Ã½AV. His research focuses on coupled processes in geomechanics, fluid dynamics and thermodynamics, with applications in mine health and safety, sustainable mineral production, and geo-energy transition. Dr. Liu earned his Ph.D. in Energy and Mineral Engineering from Penn State University. Prior to joining the Â鶹´«Ã½AV in 2025, he served as an Assistant Teaching Professor at Penn State University following the completion of his doctoral degree.
Research interests
- Geomechanics, rock mechanics, and poromechanics
- Multiphase reactive flow and transport behaviors in porous media
- Mine ventilation optimization, ground control
- Mathematical modeling and numerical simulations on coupled processes
- Rock characterizations and imaging
- Carbon dioxide sequestration/hydrogen storage in geological formations
Education
- Ph.D. in Energy and Mineral Engineering, Penn State University, 2021
- M.Sc. in Mine Safety Science and Engineering, China University of Mining and Technology-Beijing, China, 2018
- B.Sc. in Mining Engineering, Henan Polytechnic University, China, 2015
Selected publications
- Liu, A., Sang, G, Liu, S., Li, X., Wang, G., 2025. Transmission of ultrasonic wave across moisture rocks: effects of moisture sorption on velocity variation and attenuation. International Journal of Rock Mechanics and Mining Sciences, 193, paper 106188.
- Liu, A., Liu, S., Zhang, K., Xia, K., 2024. Competitive sorption of binary CH4-CO2 mixture and its implication for carbon storage in coals. Separation and Purification Technology, 354, 129399.
- Liu, A., Liu, S., 2024. Evaluation of parameters impacting grey H2 storage in coalbed methane formations. Renewable and Sustainable Energy Reviews, 202, paper 114686.
- Liu, A., Liu, S., Zhang, R., Sang, G., Xia, K. 2023. Cyclical water vapor sorption-induced structural alterations of mine roof shale. International Journal of Coal Geology, 273, paper 104267.
- Liu, A., Liu, S., Xia, K., Liu, P., Yang, Y., Wang, G., 2023. Characterizing Anisotropic Swelling Strains of Coal Using Combined Rosette Strain Gauge and CT-Scans. Rock Mechanics and Rock Engineering, 56, 5405-5426.
- Liu, A., Liu, S., 2023. Hydrogen sorption and diffusion in coals: implications for hydrogen geo-storage. Applied Energy, 334,120746.
- Liu, A., Liu, S, Wang, K., 2022. Moisture retention and multi-mechanistic transport behavior in nanoporous coal. Langmuir,38:14941-14958.
- Liu, A., Liu, S., Liu, Y., Liu, B., Liu, T., 2022. Characterizing mechanical heterogeneity of coal at nano-to-micro scale using combined nanoindentation and FESEM-EDS. International Journal of Coal Geology,261,104081.
- Liu, A., Liu, S., 2022. Mechanical property alterations across coal matrix due to water-CO2 treatments: A micro-to-nano scale experimental study. Energy,248,123575.
- Liu, A., Liu, S., 2021. A fully-coupled water-vapor flow and rock deformation damage model for shale and coal its application for mine stability evaluation. International Journal of Rock Mechanics and Mining Sciences,146,104880.