Results 51 to 60 of about 1,134 (165)

Double-Diffusive of a Nanofluid in a Rectangle-Shape Mounted on a Cavity Saturated by Heterogeneous Porous Media

Journal of Mathematics, 2021
This study presents numerical simulations on double-diffusive flow of a nanofluid in two cavities connected with four vertical gates. Novel shape of an outer square shape mounted on a square cavity by four gates was used.
Abdelraheem M. Aly, Ehab Mohamed Mahmoud, Hijaz Ahmad, Shao-Wen Yao   +3 more
doaj   +1 more source

Extrapolation Boundary Conditions for 2‐D Smoothed Particle Hydrodynamics

International Journal for Numerical Methods in Fluids, Volume 97, Issue 9, Page 1248-1279, September 2025.
This paper introduces novel inflow, outflow, and wall boundaries for the WCSPH method. Utilising innovative concepts from finite volume methods, fluid properties of sequential dynamic particles with varying distances to boundaries are extrapolated to ghost and wall particles using first‐order Taylor series expansion.
Hossein Mahdizadeh, Colin D. Rennie, Benedict D. Rogers, Abolghasem Pilechi   +3 more
wiley   +1 more source

Distinguishing passive and driven trait evolution in the presence of boundaries

Methods in Ecology and Evolution, Volume 16, Issue 9, Page 2067-2081, September 2025.
Abstract Quantifying the dynamics of macroevolutionary trends, such as changes in body size and complexity, is vital for understanding the processes that have shaped patterns of extant and extinct biodiversity. For example, whilst maximum body size may tend to increase within lineages (the Cope‐Depéret rule), it is still unclear whether such patterns ...
Elliot M. Butterworth, Tim Rogers, Matthew A. Wills   +2 more
wiley   +1 more source

Comparative Genomics Insights Into the Evolutionary Disparities Between Nitroplast‐Evolved Ecotype UCYN‐A2 and Its Closest Relative UCYN‐A1

Ecology and Evolution, Volume 15, Issue 7, July 2025.
This paper conducted comparative genomic analyses among seven UCYN‐A strains in genome content, gene structure, and key metabolic protein genes. In general, our results demonstrated considerable disparities between UCYN‐A1 and UCYN‐A2, providing insights into the evolution of UCYN‐A and nitroplast.
Shiyun Han, Sijia Zhang, Wen Ge, Jianke Yang, Hui Peng, Jinming Gao, Mengsa Zhang, Yingying Xiao, Dongsheng Du, Xianzhao Kan   +9 more
wiley   +1 more source

Simulations of Wave–Structure Interactions in Incompressible SPH Using Modified Dynamic Boundary Conditions

Journal of Marine Science and Engineering
The simulation of free-surface flows in hydraulic engineering presents several challenges due to the intrinsic complexity of modeling a fluid that continuously deforms and evolves over time.
Marco Simone, Giovanni Cannata, Georgios Fourtakas   +2 more
doaj   +1 more source

Numerical and Experimental Study of Abrupt Wave Interaction with Vertical and Inclined Rectangular Obstacles

Journal of Applied Fluid Mechanics, 2021
The aim of the present paper is the study of interaction of the abrupt wave with vertical and inclined rectangular obstacles. For this purpose, in the first step, two experiments have been done.
R. Memarzadeh, H. Sheybanifard, M. Zounemat-Kermani   +2 more
doaj  

An Incompressible Smoothed Particle Hydrodynamics (ISPH) Model of Direct Laser Interference Patterning

Computation, 2020
Functional surfaces characterised by periodic microstructures are sought in numerous technological applications. Direct laser interference patterning (DLIP) is a technique that allows the fabrication of microscopic periodic features on different ...
Cornelius Demuth, Andrés Fabián Lasagni   +1 more
doaj   +1 more source

Rotating cylinder and magnetic field on solid particles diffusion inside a porous cavity filled with a nanofluid

Nanomaterials and Nanotechnology, 2021
This study deals with the roles of a magnetic field and circular rotation of a circular cylinder on the dissemination of solid phase within a nanofluid-filled square cavity. Two wavy layers of the non-Darcy porous media are situated on the vertical sides
Abdelraheem M. Aly, Ehab Mahmoud Mohamed, Hakan F. Oztop, Noura Alsedais   +3 more
doaj   +1 more source

Comorbidities and HIV‐related factors associated with mental health symptoms and unhealthy substance use among older adults living with HIV in low‐ and middle‐income countries: a cross‐sectional study

Journal of the International AIDS Society, Volume 28, Issue 3, March 2025.
Abstract Introduction People with HIV (PWH) are vulnerable to mental health and substance use disorders (MSDs), but the extent to which these are associated with other non‐communicable diseases in ageing PWH populations remains poorly documented. We assessed comorbidities associated with symptoms of MSD among PWH ≥40 years in the Sentinel Research ...
Jeremy L. Ross, Dhanushi Rupasinghe, Thida Chanyachukul, Brenda Crabtree Ramírez, Gad Murenzi, Edith Kwobah, Fiona Mureithi, Albert Minga, Ivan Marbaniang, Hugo Perazzo, Angela Parcesepe, Suzanne Goodrich, Cleophas Chimbetete, Ephrem Mensah, Fernanda Maruri, Dung Thi Hoai Nguyen, Alvaro López‐Iñiguez, Kathryn Lancaster, Helen Byakwaga, Mpho Tlali, Marie K. Plaisy, Smita Nimkar, Rodrigo Moreira, Kathryn Anastos, Aggrey Semeere, Gilles Wandeler, Antoine Jaquet, Annette Sohn, the Sentinel Research Network of the International epidemiology Databases to Evaluate AIDS   +28 more
wiley   +1 more source

Semi‐implicit Lagrangian Voronoi approximation for the incompressible Navier–Stokes equations

International Journal for Numerical Methods in Fluids, Volume 97, Issue 1, Page 88-115, January 2025.
We introduce semi‐implicit Lagrangian Voronoi approximation (SILVA), a novel numerical method for the solution of the incompressible Euler and Navier–Stokes equations, which combines semi‐implicit time marching with time‐dependent Voronoi tessellations with topology changes.
Ondřej Kincl, Ilya Peshkov, Walter Boscheri   +2 more
wiley   +1 more source