kaz29Вестник Казахстанско-Британского технического университетаHerald of the Kazakh-British Technical University1998-66882959-8109Казахстанско-Британский Технический Университет10.55452/1998-6688-2024-21-2-152-169kaz29-1263Research ArticleМАТЕМАТИЧЕСКИЕ НАУКИMATHEMATICAL SCIENCESМАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ ВЕТРОВОГО ПОТОКА И ПЕРЕНОСА ЗАГРЯЗНЯЮЩИХ ПРИМЕСЕЙ С ЦЕЛЬЮ ПРОГНОЗИРОВАНИЯ ЭКОЛОГИЧЕСКОЙ ОБСТАНОВКИ НА СЕЛИТЕБНЫХ ТЕРРИТОРИЯХMATHEMATICAL MODELING OF THE WIND FLOW AND THE TRANSFER OF POLLUTANTS IN ORDER TO PREDICT THE ENVIRONMENTAL SITUATION IN RESIDENTIAL AREAShttps://orcid.org/0009-0004-5395-4569НигметоваА.NygmetovaA.

магистрант

050000, г. Алматы

Мaster’s student

050000, Almaty

a.nygmetova@kbtu.kzhttps://orcid.org/0000-0002-1937-8615ИсаховА.IssakhovA. A.

профессор

050000, г. Алматы

Professor

050000, Almaty

alibek.issakhov@gmail.comКазахстанско-Британский технический университетКазахстанKazakh-British technical universityKazakhstan202402072024212152169Copyright © Нигметова А., Исахов А.A., 20242024Нигметова А., Исахов А.Nygmetova A., Issakhov A.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestnik.kbtu.edu.kz/jour/article/view/1263

Целью данного исследования является анализ турбулентного рассеивания загрязняющих веществ в г. Алматы, Казахстан, вызванного выбросами автотранспорта. Изучалось влияние окружающей среды и зданий на распространение концентрации загрязнения, в данном случае этилена. Была построена трехмерная модель, в точности описывающая существующую улицу в городе. Турбулентный поток воздуха и концентрации были исследованы с помощью математической модели конвекции в полости, и задача решена методом SST k-omega. Для решения связи скорости и концентрации применялся алгоритм SIMPLE. При сравнении полученных результатов и известных тестовых данных схожесть выявленных результатов показала правильность используемых методов и алгоритмов. По итогу были проанализированы результаты распространения загрязняющих веществ при наличии барьера различной высоты: 1 м, 2 м и 3 м. Результаты показывают, что наличие барьера положительно влияет на удержание загрязнений. Также высота данных барьеров играет важную роль, поэтому при планировании и строительстве надо отталкиваться от результатов моделирования и особенностей данной территории. Это доказывают выделяющиеся различия количества концентрации в один и тот же момент времени для всех случаев.

This study aims to analyze the turbulent dispersion of pollutants in the city of Almaty, Kazakhstan, caused by vehicle emissions. The influence of the environment and building on the dispersion of pollutant concentration, in this case ethylene, was studied. A three-dimensional model was built to accurately describe an existing street in the city. Turbulent air flow and concentration was investigated using a mathematical model of convection in a cavity and was solved using the SST k-omega method. SIMPLE algorithm was applied to solve the velocity-concentration relationship. When comparing between the obtained results and known test data, the similarity of the identified results showed the correctness of the methods and algorithms used. In summary, the results of pollutant spreading were analyzed in the presence of a barrier of different heights: 1m, 2m and 3m. The findings indicate that the presence of barrier has a positive effect on the retention of pollutants. Also the height of these barriers plays an important role, so the planning and construction should be grounded on the outcomes of modeling and peculiarities of the given territory. This is proved by the marked differences in the amount of concentration at one and the same moment of time for all cases.

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The authors declare that there are no conflicts of interest present.