Numerical study of axisymmetrical transsonic impact based on the SST turbulence model DOI Creative Commons

Erkin Madaliev,

Murodil Madaliev,

Bakhodir Mirzaev

et al.

BIO Web of Conferences, Journal Year: 2024, Volume and Issue: 145, P. 03034 - 03034

Published: Jan. 1, 2024

This study presents a comprehensive numerical simulation of the aerodynamic behavior an axisymmetric model featuring spherical convex radome at transonic Mach numbers, employing Comsol Multiphysics software package for advanced computational analysis. The primary focus is on shock wave dynamics that develop upper section fairing, critical aspect understanding performance and stability aerospace vehicles. By simulating various conditions, seeks to capture intricate interactions between incoming airflow structure, which are crucial optimizing design parameters. results obtained rigorously compared with experimental data from research conducted by Bachalo Johnson, illustrating close alignment reinforces accuracy reliability calculations. These simulations utilize Shear Stress Transport (SST) turbulence model, adept handling complex flow features, further validating significance these findings future applications.

Language: Английский

Calculation of the distribution of river sediments by the depth of the stream DOI Creative Commons
Aybеk Arifjanov,

Tursunoy Apakhodjaeva,

Dinislam Atakulov

et al.

BIO Web of Conferences, Journal Year: 2024, Volume and Issue: 141, P. 03019 - 03019

Published: Jan. 1, 2024

This article presents an analysis of the calculation distribution river flow in irrigation system by depth flow. These studies aim to understand dynamics flows and impact irrigation, with researchers dedicating years this endeavor . In clarifiers, larger medium fractions sediments should be retained such quantities that they cannot transported downstream channels. case, it is not allowed re-cool water clarifier, as will cause channels washed reduce fine particles increase productivity fields It known many scientific have been conducted on flows. we analyze along current, using proposed formulas for calculation. Furthermore, research has demonstrated follows a linear pattern increasing rate or higher percentage smaller suspended particle composition. characteristic observed various related studies. The practical findings these are exemplified through at “Ekin-Tekin Pumping Station” Andijan region, serving significant case study field. We chose pumping station„ located object research, calculated turbidity station depending

Language: Английский

Citations

0
The analysis of groundwater table variations in Termez district of Surkhandarya region, Uzbekistan: A spatio-temporal approach DOI Creative Commons
Aybеk Arifjanov,

Luqmon Samiyev,

Navruz Eshboyev

et al.

BIO Web of Conferences, Journal Year: 2024, Volume and Issue: 141, P. 02018 - 02018

Published: Jan. 1, 2024

The trend analysis of the study was acquired by selecting multiyear seasonal groundwater table data and monitors wells in each sub-area under area. To calculate assess spatial differences inanition table, geostatistical methods applied based on from 14 during period January 2000 to December 2021 which were obtained a secondary source, “Uzbekhydrogeology” State Institution. geographic information system used change order find level groundwater. In this study, Inverse Distance Weightage for estimating attribute values locations that are within database using known values. Then interpolated extracted Statistical Analysis Man-Kendall’s Test. Finally, results Mann-Kendall test (Z) Sen's Slope (Q), changes determined, electronic maps area created IDW interpolation method.

Language: Английский

Citations

0
Research on the criteria of cryptographic resistant of continuous encryption algorithms DOI Creative Commons

Д. Е. Акбаров,

Shukhratjon Umarov,

Mamirjon Turdimatov

et al.

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 587, P. 03005 - 03005

Published: Jan. 1, 2024

The article examines the features of criteria for strength continuous encryption algorithms. general properties models algorithms class are revealed. On their basis, corresponding requirements formulated in form that determine necessary conditions cryptographic resistant. totality these is as a statement.

Language: Английский

Citations

0
Natural-climatic and geographical features of the territory in the organization of recreation areas DOI Creative Commons

Asilbek Tolibjon ugli Juraboyev,

U A Juraev,

Jamoldin Djhalolovich Akhmedov

et al.

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 587, P. 05015 - 05015

Published: Jan. 1, 2024

The study of natural-climatic and geographical features plays a critical role in the organization recreation areas, ensuring that these spaces not only provide leisure entertainment but also preserve environment cater to health safety visitors. This article discusses key factors such as climate, topography, vegetation, water bodies influence planning development recreational spaces. Climate determines seasonal availability type activities possible, while topography influences accessibility types infrastructure feasible. Water enhance attractiveness sites, providing opportunities for sports requiring careful management prevent environmental degradation. Understanding climatic characteristics allows planners optimize use space, visitor experiences, promote sustainable practices protect natural resources adapt changing climate. approach ensures areas serve sustainable, enjoyable, health-promoting environments all

Language: Английский

Citations

0
Mathematical modeling of the transport of hydraulic mixtures in turbulent flow in pipes DOI Creative Commons
Abdulfatto Ibrokhimov, Norilmi Amilia Ismail,

Shokhista Sharipova

et al.

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 587, P. 03011 - 03011

Published: Jan. 1, 2024

A numerical investigation has been carried out for incompressible turbulent flow in pipes. The model is based on the solution of conservation equations mass and momentum. results are validated against existing experimental results. Many models were analyzed. Numerical obtained at different Reynolds numbers. In this article, movement multiphase fluids pipes modeled basis modern models. new method proposed to avoid jams.

Language: Английский

Citations

0
Method of assessment of structural properties of knitted fabrics based on image analysis DOI Creative Commons

Muslimjon Sobirov,

Nosir Sharibaev,

Ahror Kayumov

et al.

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 587, P. 03020 - 03020

Published: Jan. 1, 2024

A novel digital image processing technique was devised to assess fabric structure attributes and identify weave patterns using a Wiener filter. Six distinct groups of images were acquired subjected analysis, encompassing three structures with two constructions each. The developed method segregated the into components, one containing warp yarns other weft yarns. By delineating yarn boundaries, fabric’s surface characteristics assessed, aiding in identification interlacing regions discern structure. findings demonstrated proficiency evaluating discerning structures, particularly for fabrics identical colors. Furthermore, approach provided more precise assessment spacing cover factor compared conventional analytical techniques employed such evaluations.

Language: Английский

Citations

0
Handwritten signature preprocessing for off-line recognition systems DOI Creative Commons

U. Yu. Akhundjanov,

Ravshanbek Zulunov, Ahror Kayumov

et al.

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 587, P. 03019 - 03019

Published: Jan. 1, 2024

In the process of handwritten signature recognition, preliminary processing is an important step before identifying informative features. The signatures one person always have some differences, in addition, they can be different colors, sizes and orientations. Once are digitized, their images may contain noise. purpose a image to obtain most invariant representation digital person’s signature, which will allow him identified or establish that forged.

Language: Английский

Citations

0
Comparison of numerical results of linear and nonlinear turbulence models based on the rans approach DOI Creative Commons

Murodil Madaliev,

Elmurad Yunusaliev,

Zokhidjon Abdulkhaev

et al.

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 587, P. 01003 - 01003

Published: Jan. 1, 2024

This paper considers one of the urgent problems modern physics — numerical solution turbulent flows, which play a key role in various fields science and technology, including aerodynamics, hydrodynamics heat transfer processes. The main attention is paid to comparison two turbulence models: linear model SST (Shear Stress Transport) nonlinear RSM (Reynolds Model). Both approaches are widely used for modeling but their efficiency accuracy may vary depending on nature flow. To compare these models, problem two-dimensional (2D) flow sharply expanding channel taken from NASA database was chosen. classic example complex flow, makes it ideal testing models. Sharp expansion leads effects, such as formation recirculation zones intense shear stresses, creates additional difficulties modeling. purpose this study assess how accurately each models describes processes flows identify strengths weaknesses. work included calculations based RANS approach (Reynolds-Averaged Navier-Stokes), by averaging Navier-Stokes equations over time. results both were compared with experimental data, allowed an objective assessment accuracy.

Language: Английский

Citations

0
Torqueless transmission DOI Creative Commons

Muxiddin Tillaboev,

Zumradxon Xatamova,

Ilhomidin Rustamov

et al.

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 587, P. 01004 - 01004

Published: Jan. 1, 2024

An experimental sample of a drill implementing torqueless method operation has been developed, manufactured and tested. As birotative motor, standard DC commutator motor DP12-24 is used, supply voltage 24 V DC, rated rotation speed 3500 rpm, maximum torque 3.2 kg cm. For hand tools that use low-power motors ( up to 1 kW). A electric the ability rotate both rotor stator in direction opposite rotor. The are equipped with pulleys transmit working shaft, transmitting forward direction, direction. Thus, connected by shaft into single transmission system, ensuring distribution speeds such way at same directions.

Language: Английский

Citations

0
Review and analysis of methods of automation of temperature measurement process DOI Creative Commons

Xusniddin Sotvoldiev,

Dadakhon Tukxtasinov,

Sanjar Zokirov

et al.

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 592, P. 03024 - 03024

Published: Jan. 1, 2024

Temperature sensing is a critical aspect in various applications, ranging from industrial processes to consumer electronics. Two commonly used temperature sensors are NTC (Negative Coefficient) thermistors and DS18B20 thermometer sensors. resistive devices characterized by negative coefficient, making their resistance decrease as rises. sensors, on the other hand, employ digital 1-wire interface provide accurate measurements wide range. Understanding measurement performance limits of vital for selecting appropriate sensor given application, ensuring reliable data acquisition. Implementing using involves considering characteristic curves, while offer output, simplifying interfacing with microcontrollers. The output both typically degrees Celsius, providing essential information applications requiring precise monitoring.

Language: Английский

Citations

0