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Dynamics of long bubbles propagating through cylindrical micro-pin fin arrays (2023)
Journal Article
El Mellas, I., Municchi, F., Icardi, M., & Magnini, M. (2023). Dynamics of long bubbles propagating through cylindrical micro-pin fin arrays. International Journal of Multiphase Flow, 163, 104443. https://doi.org/10.1016/j.ijmultiphaseflow.2023.104443

The dynamics of two-phase flows confined within complex and non-straight geometries is of interest for a variety of applications such as micro-pin fin evaporators and flow in unsaturated porous media. Despite the propagation of bubbles in straight ch... Read More about Dynamics of long bubbles propagating through cylindrical micro-pin fin arrays.

Conjugate heat transfer effects on flow boiling in microchannels (2022)
Journal Article
Municchi, F., El Mellas, I., Matar, O. K., & Magnini, M. (2022). Conjugate heat transfer effects on flow boiling in microchannels. International Journal of Heat and Mass Transfer, 195, Article 123166. https://doi.org/10.1016/j.ijheatmasstransfer.2022.123166

This article presents a computational study of saturated flow boiling in non-circular microchannels. The unit channel of a multi-microchannel evaporator, consisting of the fluidic channel and surrounding evaporator walls, is simulated and the conjuga... Read More about Conjugate heat transfer effects on flow boiling in microchannels.

Stochastic design for additive manufacture of true biomimetic populations (2022)
Journal Article
Groth, J., Magnini, M., Tuck, C., & Clare, A. (2022). Stochastic design for additive manufacture of true biomimetic populations. Additive Manufacturing, 55, Article 102739. https://doi.org/10.1016/j.addma.2022.102739

Current biomimetic designs do not incorporate naturally occurring variance. Instead, the same unit cell is repeatedly copied and pasted to create a pattern. Existing stochastic designs use the same randomness for all parameters. However, nature teach... Read More about Stochastic design for additive manufacture of true biomimetic populations.

Liquid film distribution around long gas bubbles propagating in rectangular capillaries (2022)
Journal Article
Magnini, M., Municchi, F., El Mellas, I., & Icardi, M. (2022). Liquid film distribution around long gas bubbles propagating in rectangular capillaries. International Journal of Multiphase Flow, 148, Article 103939. https://doi.org/10.1016/j.ijmultiphaseflow.2021.103939

We present a systematic analysis of the bubble and liquid film dynamics corresponding to the propagation of long, isolated gas bubbles, within rectangular capillary channels of cross-sectional aspect-ratio ranging from 1 to 8. Direct numerical simula... Read More about Liquid film distribution around long gas bubbles propagating in rectangular capillaries.

Five simple tools for stochastic lattice creation (2021)
Journal Article
Groth, J. H., Anderson, C., Magnini, M., Tuck, C., & Clare, A. (2022). Five simple tools for stochastic lattice creation. Additive Manufacturing, 49, Article 102488. https://doi.org/10.1016/j.addma.2021.102488

Lattices are increasingly used in engineering applications. They can reduce weight in aircraft components, increase the efficiency of heat exchangers and are used as medical implants. Typically a regular and graded lattice, where the unit cells are i... Read More about Five simple tools for stochastic lattice creation.

Dynamics of long gas bubbles rising in a vertical tube in a cocurrent liquid flow (2019)
Journal Article
Magnini, M., Khodaparast, S., Matar, O. K., Stone, H. A., & Thome, J. R. (2019). Dynamics of long gas bubbles rising in a vertical tube in a cocurrent liquid flow. Physical Review Fluids, 4(2), Article 023601. https://doi.org/10.1103/PhysRevFluids.4.023601

© 2019 American Physical Society. When a confined long gas bubble rises in a vertical tube in a cocurrent liquid flow, its translational velocity is the result of both buoyancy and mean motion of the liquid. A thin film of liquid is formed on the tub... Read More about Dynamics of long gas bubbles rising in a vertical tube in a cocurrent liquid flow.

Numerical analysis of slug flow boiling in square microchannels (2018)
Journal Article
Ferrari, A., Magnini, M., & Thome, J. R. (2018). Numerical analysis of slug flow boiling in square microchannels. International Journal of Heat and Mass Transfer, 123, 928-944. https://doi.org/10.1016/j.ijheatmasstransfer.2018.03.012

© 2018 Elsevier Ltd Boiling heat transfer in micro-geometries has been studied extensively in the recent years as an efficient heat removal mechanism. Numerical simulations have been traditionally employed to resolve the small spatial and temporal sc... Read More about Numerical analysis of slug flow boiling in square microchannels.

Pore-scale analysis of the minimum liquid film thickness around elongated bubbles in confined gas-liquid flows (2017)
Journal Article
Magnini, M., Beisel, A. M., Ferrari, A., & Thome, J. R. (2017). Pore-scale analysis of the minimum liquid film thickness around elongated bubbles in confined gas-liquid flows. Advances in Water Resources, 109, 84-93. https://doi.org/10.1016/j.advwatres.2017.08.020

© 2017 Elsevier Ltd The fluid mechanics of elongated bubbles in confined gas-liquid flows in micro-geometries is important in pore-scale flow processes for enhanced oil recovery and mobilization of colloids in unsaturated soil. The efficiency of such... Read More about Pore-scale analysis of the minimum liquid film thickness around elongated bubbles in confined gas-liquid flows.

Undulations on the surface of elongated bubbles in confined gas-liquid flows (2017)
Journal Article
Magnini, M., Ferrari, A., Thome, J. R., & Stone, H. A. (2017). Undulations on the surface of elongated bubbles in confined gas-liquid flows. Physical Review Fluids, 2(8), Article 084001. https://doi.org/10.1103/PhysRevFluids.2.084001

© 2017 American Physical Society. A systematic analysis is presented of the undulations appearing on the surface of long bubbles in confined gas-liquid flows. CFD simulations of the flow are performed with a self-improved version of the open-source s... Read More about Undulations on the surface of elongated bubbles in confined gas-liquid flows.

A CFD study of the parameters influencing heat transfer in microchannel slug flow boiling (2016)
Journal Article
Magnini, M., & Thome, J. R. (2016). A CFD study of the parameters influencing heat transfer in microchannel slug flow boiling. International Journal of Thermal Sciences, 110, 119-136. https://doi.org/10.1016/j.ijthermalsci.2016.06.032

© 2016 Elsevier Masson SAS Boiling heat transfer in microchannels has been investigated extensively in the last two decades. However, most results from independent experimental studies display a substantial disagreement on the influence of the flow c... Read More about A CFD study of the parameters influencing heat transfer in microchannel slug flow boiling.