Results 11 to 20 of about 119 (91)

Numerical Analysis of Local Thermal Non‐Equilibrium Experiments Reveals Conceptual Regimes of Grain‐Scale Heat Transport

Water Resources Research
Modeling heat transport in saturated porous media typically assumes local thermal equilibrium (LTE) conditions, though this assumption lacks justification.
Haegyeong Lee, Hannah Gebhardt, Philipp Blum, Peter Bayer, Gabriel C. Rau   +4 more
doaj   +2 more sources

Effective Thermal Retardation in Aquifers of Heterogeneous Hydraulic Conductivity

Water Resources Research
Thermal retardation and dispersion are important processes affecting advective heat transport in sedimentary aquifers, yet little is known how they are influenced by heterogeneity of hydraulic conductivity.
Hannah Gebhardt, Alraune Zech, Gabriel C. Rau, Peter Bayer   +3 more
doaj   +2 more sources

Data‐driven modelling methods in sintering process: Current research status and perspectives

The Canadian Journal of Chemical Engineering, Volume 101, Issue 8, Page 4506-4522, August 2023., 2023
Abstract The sintering process, as a primary modus of the blast furnace ironmaking industry, has enormous economic value and environmental protection significance for the iron and steel enterprises. Recently, with the emergence of artificial intelligence and big data, data‐driven modelling methods in the sintering process have increasingly received the
Feng Yan, Xinmin Zhang, Chunjie Yang, Bing Hu, Weidong Qian, Zhihuan Song   +5 more
wiley   +1 more source

A Thermodynamic Nonequilibrium Model for Preferential Infiltration and Refreezing of Melt in Snow

Water Resources Research, Volume 59, Issue 5, May 2023., 2023
Abstract The transport of meltwater through porous snow is a fundamental process in hydrology that remains poorly understood but essential for more robust predictions of how the cryosphere will respond under climate change. Here, we propose a continuum model that resolves the nonlinear coupling of preferential melt flow and the nonequilibrium ...
Adrian Moure, Nathan Jones, Joshua Pawlak, Colin Meyer, Xiaojing Fu   +4 more
wiley   +1 more source

Thermal Convective Instabilities and Chaos in a Rotating Hybrid Nanofluid Layer with Cattaneo–Christov Heat Flux Model

Complexity, Volume 2022, Issue 1, 2022., 2022
The linear and nonlinear dynamics of thermal convection of a rotating hybrid nanofluid layer heated from below with the Cattaneo–Christov heat flux model are studied in this paper. Starting from the flow equations of a hybrid nanofluid and exploiting the free boundary conditions, the analytical expressions of the stationary and oscillatory Rayleigh ...
Sèmako Justin Dèdèwanou, Adjimon Vincent Monwanou, Aimé Audran Koukpémèdji, Amoussou Laurent Hinvi, Clément Hodévèwan Miwadinou, Jean Bio Chabi Orou, Akif Akgul   +6 more
wiley   +1 more source

A Multi‐Phase Heat Transfer Model for Water Infiltration Into Frozen Soil

Water Resources Research, Volume 57, Issue 10, October 2021., 2021
Abstract In many regions, water infiltration into frozen soil is a critical process. Frozen soil is known to have a substantially reduced infiltration capacity, resulting in surface water runoff. This surface runoff is often associated with erosive behavior posing a potential natural hazard as it facilitates snow avalanches and debris flow, especially ...
T. Heinze
wiley   +1 more source

Laboratory heat transport experiments reveal grain-size- and flow-velocity-dependent local thermal non-equilibrium effects [PDF]

Hydrology and Earth System Sciences
Heat transport in porous media is crucial for gaining Earth science process understanding and for engineering applications such as geothermal system design.
H. Lee, M. Gossler, K. Zosseder, P. Blum, P. Bayer, G. C. Rau   +5 more
doaj   +1 more source

On the Limitations and Implications of Modeling Heat Transport in Porous Aquifers by Assuming Local Thermal Equilibrium

Water Resources Research, Volume 56, Issue 10, October 2020., 2020
Abstract Heat transport in natural porous media, such as aquifers or streambeds, is generally modeled assuming local thermal equilibrium (LTE) between the fluid and solid phases. Yet, the mathematical and hydrogeological conditions and implications of this simplification have not been fully established for natural porous media.
Manuel A. Gossler, Peter Bayer, Gabriel C. Rau, Florian Einsiedl, Kai Zosseder   +4 more
wiley   +1 more source

Numerical simulation of local thermal non-equilibrium effects on the flow and heat transfer of non-Newtonian Casson fluid in a porous media

Case Studies in Thermal Engineering, 2021
The energy/heat and diffusion/mass flux occurred due to chemical potential and temperature gradient, respectively have worth in the areas of electrical power generation, solar power technology, chemical engineering, petrology, nuclear waste disposal ...
A. Alhadhrami, C.S. Vishalakshi, B.M. Prasanna, B.R. Sreenivasa, Hassan A.H. Alzahrani, R.J. Punith Gowda, R. Naveen Kumar   +6 more
doaj   +1 more source

Numerical investigation on latent thermal energy storage in shell and corrugated internal tube with PCM and metal foam [PDF]

E3S Web of Conferences, 2021
A numerical investigation on Latent Heat Thermal Energy Storage System (LHTESS) based on an aluminum foam totally filled with phase change material (PCM) is accomplished.
Buonomo Bernardo, Di Somma Francescantonio, Manca Oronzio, Nardini Sergio, Plomitallo Renato Elpidio   +4 more
doaj   +1 more source