Physical Review Fluids

Phase-field modeling of drop dynamics and direct numerical simulation of drop-laden turbulent flow are used to examine the complex topological changes of the dispersed phase — breakage and coalescence — and to determine the evolving drop size distribution. Potentials and perspectives for further development of the phase-field method to model mass transfer, heat transfer, and Marangoni effects due to thermocapillarity and surfactants are also discussed.

By summarizing the historical trajectory of immersed boundary methods and addressing some frequently asked questions about these methods, this article attempts to empower researchers to innovate in ways that advance the state-of-the-art in these methods.

We present a multi–physics computational model of the human heart accounting for the electrophysiology, elasto-mechanics, and hemodynamics, including their complex interactions. The model is accurate and computationally efficient and, thanks to the implementation on GPU architectures, it allows cardiovascular simulations of physiologic and pathologic configurations within a time–to–solution compatible with clinical practice. Results are shown for healthy conditions and for myocardial infarction with the aim of assessing the reliability and predictive capabilities of the model which can be used to anticipate the outcome of surgical procedures or support clinical decisions.

A novel scaling methodology is presented for unique wind and water tunnel experiments of floating offshore wind farms. Geometric similarity of the floater design is leveraged to improve the hydraulic response and relax Froude scaling. Turbine motion, power, and wake measurements reveal intricate coupled dynamic interactions between wave topology, wake evolution, turbine response, and wind farm power output.