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WebQuiescent core in turbulent channel flow with spanwise-uniform roughness | Journal of Fluid Mechanics
2+ week, 19+ hour ago (367+ words) This study examines drag and outer-layer similarity in a rough-wall channel with spanwise-uniform bars at pitch-to-height ratios 6, 12 and 24, using direct numerical simulations at. The quiescent core (QC) is detected via kernel density estimation of the streamwise velocity probability density function…...
Exchange flows between viscoplastic and Newtonian fluids in vertical and inclined pipes | Journal of Fluid Mechanics
1+ mon, 3+ week ago (963+ words) Published online by Cambridge University Press: 20 July 2026 In total, around 70 placement flow experiments are performed, for a range of different experimental parameters: different inclinations, fluid rheological properties and density differences. The dimensions of the experimental set-up and the range of…...
Flow morphology and patterns in porous media convection: A persistent homology analysis | Journal of Fluid Mechanics
1+ mon, 4+ week ago (627+ words) Published online by Cambridge University Press: 14 July 2026 Note that a slip at the walls is possible, due to the Darcy formulation adopted. Periodicity is considered across the vertical boundaries (directions $x,y$ ) for all flow variables. (i) Semi-infinite domain: the temperature…...
Settling of chiral particles in a turbulent flow | Journal of Fluid Mechanics
2+ mon, 1+ week ago (1171+ words) Published online by Cambridge University Press: 29 June 2026 A raw image of a recorded chiral particle (a), and its corresponding 3D reconstruction (b). The method for reconstructing the particle is described in Flapper et al. (Reference Flapper, Bernard and Huisman2025). The energy dissipation rate $\epsilon…...
Microstructure and thickening of bi-disperse granular suspensions in simple shear flow | Journal of Fluid Mechanics
2+ mon, 2+ week ago (434+ words) Most granular suspensions in nature and industrial applications comprise multimodal particles in a broad size range. Despite numerous studies attempting to establish a unified viscosity model for polydisperse suspensions with different particle size distributions (PSDs), the microstructure exhibits a strong…...
The role of the law of the wall in cross-scenario generalisation of data-driven models | Journal of Fluid Mechanics
3+ mon, 1+ week ago (1440+ words) Published online by Cambridge University Press: 04 June 2026 The remainder of this paper is organised as follows. Section 2 presents the methodology. Section 3 discusses the results. Finally, § 4 summarises the main findings and offers concluding remarks. Equations (2.4)–(2.6) are enforced during both the PINN-based…...