Physics of Fluids

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Physics of Fluids POF publishes theoretical, computational & experimental papers on dynamics of gases, liquids & compl

We present a data assimilation method to infer forcing functions in point-particle models using limited trajectory data,...
30/06/2025

We present a data assimilation method to infer forcing functions in point-particle models using limited trajectory data, combining adjoint methods and HMC sampling for uncertainty quantification.

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A data assimilation approach is coined that enables the discovery of forcing functions in Lagrangian, point-particle models from limited measurements of traject

Although the random sweeping hypothesis provides a basic picture of the spectral relationship between velocity and Reyno...
30/06/2025

Although the random sweeping hypothesis provides a basic picture of the spectral relationship between velocity and Reynolds stress fluctuations, the modulation effects also play significant roles.

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The space-time spectra of streamwise velocity fluctuations and streamwise Reynolds normal stress (SRNS) fluctuations in turbulent channel flows, as well as the

A novel OpenFOAM-based modular solver for high-speed flows with multiple innovations was developed. It achieves high-fid...
29/06/2025

A novel OpenFOAM-based modular solver for high-speed flows with multiple innovations was developed. It achieves high-fidelity simulation capabilities while maintaining computational efficiency.

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High-fidelity computational fluid dynamics (CFD) simulations play a vital role in advancing hypersonic technologies for aerospace applications. Despite the avai

Tropical storms’ max kinetic energy density matches water vapor's partial pressure. Kinetic energy generation in the bou...
28/06/2025

Tropical storms’ max kinetic energy density matches water vapor's partial pressure. Kinetic energy generation in the boundary layer equals potential energy release from condensation in the air column.

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Based on several assumptions, including gradient-wind balance in the free troposphere, Emanuel's formulation of maximum potential intensity (E-PI) combines para

This study compares SPH and FVM to simulate turbulent marine propeller jets and analyse vortices, wake dynamics, and vel...
27/06/2025

This study compares SPH and FVM to simulate turbulent marine propeller jets and analyse vortices, wake dynamics, and velocity fields, proving its potential for complex flow modeling.

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This study presents a comparative analysis between Smoothed Particle Hydrodynamics (SPH) and Finite Volume Methods (FVMs) in simulating highly turbulent flows,

The nonlinear saturation of the unstable Mack modes is due to the change in acoustic phasing due to nonlinear distortion...
27/06/2025

The nonlinear saturation of the unstable Mack modes is due to the change in acoustic phasing due to nonlinear distortions in the base flow, unlike classical hydrodynamics as discussed by J.T. Stuart.

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We analyze the role of the relative phasing in the nonlinear saturation of the unstable Mack modes in a hypersonic parallel flow boundary layer in two dimension

High-resolution climate projections show Hong Kong’s residential energy use could rise by up to 14% by century’s end, st...
26/06/2025

High-resolution climate projections show Hong Kong’s residential energy use could rise by up to 14% by century’s end, stressing the need for adaptive building design and energy policies.

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Finer resolution climate model projections are essential for designing regional building energy consumption and adaptation strategies under changing climate con

Non-Invasive measurements of the elastic modulus of living human breast cancer cell using the elastohydrodynamic interac...
26/06/2025

Non-Invasive measurements of the elastic modulus of living human breast cancer cell using the elastohydrodynamic interaction between the thermal fluctuations of an AFM cantilever and the cell.

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We present a contactless method for measuring the elastic modulus of living human triple-negative breast cancer cells (MDA-MB-231) using the thermal fluctuation

Lagrangian approach to get induction and reaction times in cellular gaseous detonations gives insights into chemical and...
25/06/2025

Lagrangian approach to get induction and reaction times in cellular gaseous detonations gives insights into chemical and hydrodynamic processes, role of transverse waves, and ignition mechanisms.

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A Lagrangian approach was proposed to analyze induction and reaction times in the cellular gaseous detonation. Two-dimensional simulations in an argon-diluted a

This study examines drop impacts on vertical fur-like fiber arrays, analyzing effects of density, arrangement and wettab...
25/06/2025

This study examines drop impacts on vertical fur-like fiber arrays, analyzing effects of density, arrangement and wettability. A model is derived for pe*******on depth as a function of Weber number.

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This experimental work investigates the impact dynamics of drops on vertically oriented, three-dimensional-printed (3D-printed) fiber arrays with variations in

This study shows that ionizable polyelectrolyte brushes in nanochannels regulate solvent flow with sharp pH/pressure-dri...
24/06/2025

This study shows that ionizable polyelectrolyte brushes in nanochannels regulate solvent flow with sharp pH/pressure-driven transitions, enabling smart nanofluidics for drug delivery and biosensors.

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Surface modification of nanochannels with polyelectrolyte brushes (PEBs) offers a powerful mechanism for controlling nanoscale flow transport. In aqueous enviro

Particle swimming vertically in shallow flows encounter counter flows that can impede them to reach their goal. When the...
24/06/2025

Particle swimming vertically in shallow flows encounter counter flows that can impede them to reach their goal. When the flow is unsteady, they can overcome this obstacle.

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We report on the vertical distribution of swimming particles in three-dimensional shallow flows obtained by numerical simulations. This study examines shallow f

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