МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ ВЕТРОВОГО ПОТОКА И ПЕРЕНОСА ЗАГРЯЗНЯЮЩИХ ПРИМЕСЕЙ С ЦЕЛЬЮ ПРОГНОЗИРОВАНИЯ ЭКОЛОГИЧЕСКОЙ ОБСТАНОВКИ НА СЕЛИТЕБНЫХ ТЕРРИТОРИЯХ

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.

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