A numerical simulation of aerosol particle deposition in a horizontal circular pipe with a corrugated wall under turbulent flow has been carried out in this research. This paper uses the RNG - turbulence model with Enhanced Wall Treatment to simulate fluid flow. Furthermore, the Lagrangian particle tracking model simulates particle deposition in the corrugated pipe. Air-particle interaction is influenced by Stokes number, surface roughness, flow velocity, particle diameter, and pipe diameter. For the parametric simulation, particle diameter varies from 1 to 30 μm, whereas the Reynolds number ranges from 5000 to 10,000. The effect of corrugation height and pipe diameter on deposition efficiency is also investigated. This study shows that corrugation height significantly increases particle deposition compared to the smooth wall pipe. As the pipe diameter decreases, keeping the corrugation ratio constant, deposition efficiency also increases. Moreover, high flow velocity enhances deposition efficiency for particle diameters lower than 5 μm.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10034462 | PMC |
| http://dx.doi.org/10.1016/j.heliyon.2023.e14603 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Self-Interacting Dark Sectors in Supernovae Can Behave as a Relativistic Fluid.
Phys Rev Lett
December 2024
Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Via Marzolo 8, 35131 Padova, Italy.
We revisit supernova (SN) bounds on a hidden sector consisting of millicharged particles χ and a massless dark photon. Unless the self-coupling is fine-tuned to be small, rather than exiting the SN core as a gas, the particles form a relativistic fluid and subsequent dark QED fireball, streaming out against the drag due to the interaction with matter. Novel bounds due to excessive energy deposition in the mantle of low-energy supernovae can be obtained.
View Article and Find Full Text PDFComputational fluid particle dynamics modeling of tangential flow filtration in perfusion cell culture.
Bioprocess Biosyst Eng
January 2025
Cell Culture Development, Biogen, 5000 Davis Drive, Research Triangle Park, NC, 27709, USA.
Membrane fouling is a common and complex challenge with cell culture perfusion process in biopharmaceutical manufacturing that can have detrimental effects on the process performance. In this study, we evaluated a method to calculate the hollow fiber membrane resistance at different time points for water and supernatant. In addition, the number of subvisible particles of < 200 nm.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Itabashi-ku, Tokyo, Japan.
Background: Although amyloid deposition in brain is one of the hallmark pathological features of Alzheimer's disease (AD), the upstream events and its molecular environment in AD brain remain largely unknown. Recent advances in analytical methods such as mass spectrometry can provide the cutting-edge tools to unveil the AD pathogenesis at molecular and atomic level.
Method: In order to gain the comprehensive information about AD pathology at molecular level, postmortem brain sections of AD patients were analyzed by the hybrid molecular imaging methods composed of the conventional histological analyses, matrix assisted laser desorption ionization mass spectrometry imaging (MALDI-MSI) for small molecules, laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) imaging for metals, and particle induced X-ray emission (PIXE) imaging for elements.
Impact of particle size on and fat fraction estimation for accurate assessment of hepatic iron overload and steatosis using MRI.
Magn Reson Med
January 2025
Department of Biomedical Engineering, The University of Memphis, Memphis, Tennessee, USA.
Purpose: To investigate the impact of iron particle size on and fat fraction (FF) estimations for coexisting hepatic iron overload and steatosis condition using Monte Carlo simulations and phantoms.
Methods: Three iron particle sizes (0.38, 0.
Study of the spatial strength distribution patterns and microstructure characteristics of ultra-fine tailings cemented paste backfill.
Sci Rep
January 2025
State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education, University of Science and Technology Beijing, Beijing, 100083, China.
In this study, the spatial distribution of the mechanical strength of ultra-fine tailings cemented paste backfill (UCPB) in underground stopes was examined, and the micro-mechanism responsible for differences in spatial strength performance via changes in particle deposition was elucidated. To better understand this phenomenon, we constructed a similar backfilling stope model using the ultra-fine tailings of a gold mine. We manufactured specimens at different spatial locations and conducted a novel series of tests, including uniaxial compressive strength, shear strength, and conventional triaxial tests, to obtain the strength parameters in different spatial distributions.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!