Resent advances in underground water deironing and demanganization: Comprehensive review

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 70, P. 107089 - 107089

Published: Jan. 28, 2025

Language: Английский

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Analysis of air flow formation in a nozzle valve

Herald of Dagestan State Technical University Technical Sciences, Journal Year: 2025, Volume and Issue: 51(4), P. 171 - 178

Published: Jan. 20, 2025

Objective . To accurately assess the impact of ventilation systems on acoustic environment a room, it is necessary to determine length vortex zone that forms as air flow passes through throttling devices. The article examines results modeling nozzle valve with variable cross-section during its opening and closing processes. Method analysis airflow formation scenarios at various positions control diaphragm was performed using Computational Fluid Dynamics (CFD) in Ansys Fluent software package. Result As cross-sectional area decreases, sharp local increase velocity observed, along zones reverse flows resulting from ejection effect. Conclusion presence complex turbulent network leads increased sound pressure levels noise penetrating serviced space. Significant deviations recommended maximum velocity, depending scenario, highlight importance considering devices calculations. Analyzing stabilization section enables optimal placement valve, preventing breaking up due combined influence resistances (air distribution devices, tees, bends, constant valves). reduce risk noise, position straight duct section, least one diameter before three diameters after device.

Language: Английский

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Developing Computer Vision Models for Classifying Grain Shapes of Crushed Stone

Sensors, Journal Year: 2025, Volume and Issue: 25(6), P. 1914 - 1914

Published: March 19, 2025

In the construction industry, along with traditional approaches for visual and instrumental assessment of building materials, methods based on intelligent algorithms are increasingly appearing; in particular, machine learning neural network technologies. The utilization modern technologies enables us to enhance processes a new quality level, decreasing pace without precision losses compared methods. This research introduces novel method characterizing crushed stone grain morphology using application specially designed three-dimensional computer vision networks point data clouds. Flakiness affects strength, adhesion, location grains. So, calculating this indicator by determining planar dimensions each particle is necessary its suitability various types work. Architectures PointNet PointCloudTransformer chosen as basis classification algorithms. input were 3D images grains, shapes which divided into needle-shaped, plate-shaped, cubic classes. accuracy metric achieved during training both models was 0.86. Using algorithms, analysis via manual selection, sieve analysis, or special equipment, will reduce labor can also serve an additional source verifying materials at stages construction.

Language: Английский

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Analysis of the Impact of Residential Building Shape and Orientation on Energy Efficiency

Buildings, Journal Year: 2025, Volume and Issue: 15(8), P. 1359 - 1359

Published: April 19, 2025

The construction of residential buildings and structures is a complex process in which the economic component plays key role. It essential to maintain balance between saving materials costs additional engineering solutions while ensuring functionality comfort building’s operation. To achieve this goal, researchers initially analyze impact climatic environment spatial planning solutions—i.e., building shapes—that directly affect compactness ratio when evaluating efficiency designed building. In regard, objective study was shapes orientations Republic Kazakhstan across eight territorial units located I, III, IV zones latitudes 42°18′ 52°16′ N. identified most favorable for each zone: meridional orientation preferable I III zones, latitudinal optimal zone. Four shapes—square, rectangular, cylindrical, triangular—were analyzed based on floor area 1000 m2 volume 3000 m3 during coldest five-day period hottest month. According specific thermal characteristic values, it found that cylindrical 1.1, 1.37, 1.27 times more efficient than square, triangular buildings, respectively. Additionally, determined different heights, ranging from 8 16 floors increments four floors. results showed under these conditions, increases by an average 1.3 due increase external walls. However, if initial condition changed account solely area, decreases up 2.3 times. conducted research shows solving problem energy building, taking into orientations, necessary carry out full assessment specified parameter depending expected results, requires comprehensive analysis energy-efficient buildings. At same time, will be used positively complement authors development exterior enclosing structures, which, together with general solutions, significantly earlier.

Language: Английский

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Digital Platform for Accelerated Materials Development: Status, Challenges, Prospects, Technologies

Published: April 14, 2025

When making scientific discoveries, it is extremely important for researchers to have access as large a data set possible in order obtain more complete picture of the material characteristics. Another factor limiting scientist's ability invent new materials lack understanding basic physical and chemical laws inherent system under study. Currently, there no standard procedure exchanging predictive algorithms computational methods between research groups various fi elds knowledge. At same time, development promising products determined by success solving number technological problems. The terms these developments are significantly reduced, volume significance results solution increased using latest achievements field digital science, artificial intelligence organization process.

Language: Английский

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