The Vertical Two-Phase Flow Regimes in an annulus Image Dataset, generated at Texas A&M University, presents an extensive collection of high-resolution images capturing various gas-liquid two-phase flow dynamics within a vertical flow setup. This dataset results from meticulous experimental work in the 140 ft Tower Lab, utilizing a combination of water and air flows to simulate real-world conditions and employing high-quality video recordings to document flow regime transitions. Designed to support research in fluid dynamics, machine vision, and computational modeling, the dataset offers valuable resources for developing machine vision models for accurate regime detection and differentiation, enhancing the fidelity of computational fluid dynamics simulations, and facilitating the estimation of critical flow parameters. Despite its comprehensive nature, the dataset notes limitations such as the absence of annular flow regime images and its exclusive focus on vertical flow conditions.
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http://dx.doi.org/10.1016/j.dib.2024.111245 | DOI Listing |
BMC Plant Biol
March 2025
Guizhou Academy of Forestry, Guiyang, Guizhou, 550005, China.
Background: Rhododendron nymphaeoides is explicitly listed as an endangered species in the "the International Union for Conservation of Nature's Red List (IUCN)", "The Red List of Rhododendrons", "Red List of China's Higher Plants" and "Threatened Species List of China's Higher Plants". It is also listed as a provincial-level key protected wild plant in Sichuan, with few individuals in the wild and significant conservation value. The genetic diversity and population structure have never been described, making it difficult to plan conservation strategies for this plant.
View Article and Find Full Text PDFInorg Chem
March 2025
State Key Laboratory of Environment-Friendly Energy Materials, School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang 621010, China.
Hierarchical porous metal-organic frameworks (HP-MOFs) have attracted considerable attention because of their hierarchical pores, which can address the slow mass transfer and less exposure of active sites in pristine microporous MOFs. Although several preparation methods have been developed to date, a large-scale technique for the synthesis of HP-MOFs is still lacking. In this study, we report a novel method for the large-scale synthesis of HP-HKUST-1 based on liquid-assisted spiral gas-solid two-phase flow (LA-S-GSF).
View Article and Find Full Text PDFSci Rep
March 2025
No. 2 Gas Production Plant, PetroChina Changqing Oilfield Company, Yulin, 710016, Shaanxi, China.
This study investigates the micro-pore-throat structure of Upper Paleozoic tight sandstone gas reservoirs in the southeastern Ordos Basin, China, with a focus on the Yan'an gas field. The aim is to analyze the micro-pore-throat characteristics and their influence on fluid seepage to optimize gas-water two-phase flow, reservoir evaluation, and development strategies. The research integrates core analysis, thin section petrography, FE-SEM, MICP, NMR, and gas-water relative permeability tests.
View Article and Find Full Text PDFSci Rep
March 2025
College of Mechanical Engineering, Quzhou University, Quzhou, 324000, China.
To investigate the internal flow mechanisms during cavitation in self-priming pumps, this study employs numerical simulations based on the RNG k-ε turbulence model coupled with the Schnerr-Sauer cavitation model. The vapor-liquid two-phase flow characteristics at the critical cavitation condition are analyzed under various flow rates and rotational speeds. Based on the vorticity method, Q criterion, λ criterion, Δ criterion, λ criterion, and Ω criterion, predictions and comparative analyses of the vortex structures during cavitation in self-priming pumps have been conducted.
View Article and Find Full Text PDFLab Chip
February 2025
School of Mathematics, Statistics and Mechanics, Beijing University of Technology, Beijing 100124, People's Republic of China.
Conductive hydrogels based on liquid metal microdroplets are widely used as wearable electronic devices. Droplet uniformity affects sensor sensitivity for weak signals, such as heart rate and pulse rate. Surface acoustic waves at micrometer wavelengths allow precise control of a single droplet, and have the potential to make uniformly discrete liquid metal droplets and distribute them in hydrogels.
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