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Two Film Approach to Continuum Scale Mixing and Dispersion with Equilibrium Bimolecular Reaction (2024)
Journal Article
Mathias, S. A., Bolster, D., & Veremieiev, S. (2024). Two Film Approach to Continuum Scale Mixing and Dispersion with Equilibrium Bimolecular Reaction. Transport in Porous Media, 151(8), 1709-1727. https://doi.org/10.1007/s11242-024-02091-y

Reliable reactive transport models require careful separation of mixing and dispersion processes. Here we treat displacing and displaced fluids as two separate fluid phases and invoke Whitman’s classical two-film theory to model mass transfer between... Read More about Two Film Approach to Continuum Scale Mixing and Dispersion with Equilibrium Bimolecular Reaction.

Evaluation of LVRT capability and stability analysis of VSC based advanced control approach for grid connected PV system under grid fault conditions (2024)
Journal Article
Zahloul, H., Khaliq, A., Hamzehbahmani, H., Veremieiev, S., & Salous, S. (2024). Evaluation of LVRT capability and stability analysis of VSC based advanced control approach for grid connected PV system under grid fault conditions. Heliyon, 10(5), Article e26935. https://doi.org/10.1016/j.heliyon.2024.e26935

Short circuit faults are a prevalent issue in power systems, causing disruptions to the grid's normal operation. Dynamic behaviours of the conventional power systems during short circuit faults have been extensively studied and unde... Read More about Evaluation of LVRT capability and stability analysis of VSC based advanced control approach for grid connected PV system under grid fault conditions.

An advanced, comprehensive thermochemical equilibrium model of a downdraft biomass gasifier (2022)
Journal Article
Ibrahim, A., Veremieiev, S., & Gaskell, P. (2022). An advanced, comprehensive thermochemical equilibrium model of a downdraft biomass gasifier. Renewable Energy, 194, https://doi.org/10.1016/j.renene.2022.05.069

A stoichiometric model is formulated for predicting the syngas yield from the reduction zone of a downdraft biomass gasifier. It incorporates the thermodynamic equilibrium of the global gasification reaction, predicts the concentration of the minor g... Read More about An advanced, comprehensive thermochemical equilibrium model of a downdraft biomass gasifier.

Gravity-driven film flow down a uniformly heated smoothly corrugated rigid substrate (2021)
Journal Article
Daly, G., Veremieiev, S., & Gaskell, P. (2022). Gravity-driven film flow down a uniformly heated smoothly corrugated rigid substrate. Journal of Fluid Mechanics, 930, Article A23. https://doi.org/10.1017/jfm.2021.920

Gravity induced film flow over a rigid smoothly corrugated substrate heated uniformly from below, is explored. This is achieved by reducing the governing equations of motion and energy conservation to a manageable form within the mathematical framewo... Read More about Gravity-driven film flow down a uniformly heated smoothly corrugated rigid substrate.

Modelling of droplet impacts on dry and wet surfaces using depth-averaged form (2021)
Journal Article
Hook, K., & Veremieiev, S. (2021). Modelling of droplet impacts on dry and wet surfaces using depth-averaged form. Journal of Engineering Mathematics, 126(1), Article 14. https://doi.org/10.1007/s10665-020-10081-4

An efficient time-adaptive multigrid algorithm is used to solve a range of normal and oblique droplet impacts on dry surfaces and liquid films using the Depth-Averaged Form (DAF) method of the governing unsteady Navier–Stokes equations. The dynamics... Read More about Modelling of droplet impacts on dry and wet surfaces using depth-averaged form.

Modelling gravity-driven film flow on inclined corrugated substrate using a high fidelity weighted residual integral boundary-layer method (2019)
Journal Article
Veremieiev, S., & Wacks, D. (2019). Modelling gravity-driven film flow on inclined corrugated substrate using a high fidelity weighted residual integral boundary-layer method. Physics of Fluids, 31(2), Article 022101. https://doi.org/10.1063/1.5063013

A computational investigation is conducted concerning the stability of free-surface gravity-driven liquid film flow over periodic corrugated substrate. The underpinning mathematical formulation constitutes an extension of the weighted residual integr... Read More about Modelling gravity-driven film flow on inclined corrugated substrate using a high fidelity weighted residual integral boundary-layer method.

Steady bilayer channel and free-surface isothermal film flow over topography (2018)
Journal Article
Abdalla, A., Veremieiev, S., & Gaskell, P. (2018). Steady bilayer channel and free-surface isothermal film flow over topography. Chemical Engineering Science, 181, 215-236. https://doi.org/10.1016/j.ces.2018.01.031

Two flow configurations, involving bilayers, are explored systematically: through an inclined channel comprised of two planar surfaces in parallel alignment and down an inclined plane. Both liquid layers are assumed to be perfectly immiscible and the... Read More about Steady bilayer channel and free-surface isothermal film flow over topography.

Free Surface Thin Film Flow of a Sisko’s Fluid over a Surface Topography (2017)
Journal Article
Shah, R., Gaskell, P., & Veremieiev, S. (2017). Free Surface Thin Film Flow of a Sisko’s Fluid over a Surface Topography. Journal of applied fluid mechanics, 10(1), 307-317. https://doi.org/10.18869/acadpub.jafm.73.238.26727

The flow of a thin film down an inclined surface over topography is considered for the case of liquids with Sisko’s model viscosity. For the first time lubrication theory is used to reduce the governing equations to a non-linear evolution equation fo... Read More about Free Surface Thin Film Flow of a Sisko’s Fluid over a Surface Topography.

Free-surface film flow over topography: full three-dimensional finite element solutions (2015)
Journal Article
Veremieiev, S., Thompson, H., & Gaskell, P. (2015). Free-surface film flow over topography: full three-dimensional finite element solutions. Computers and Fluids, 122, 66-82. https://doi.org/10.1016/j.compfluid.2015.08.016

An efficient Bubnov-Galerkin finite element formulation is employed to solve the Navier-Stokes and continuity equations in three-dimensions for the case of surface-tension dominated film flow over substrate topography, with the free-surface location... Read More about Free-surface film flow over topography: full three-dimensional finite element solutions.