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Ushbu maqolada Saralash tepaligi balandligini hisoblashda yomon sharoitni inobatga olgan holda eng yomon yugurak sifatida vagon turini tanlash tahlili olib borilgan. Saralash tepaligidan tushayotgan yarim ochiq vagonning harakati tahlil qilingan. Yarim ochiq vagonga ta’sir qiluvchi kuchlar tasnifi to‘liq yoritilgan. Qarshi esayotgan havo oqimi ta’sirida yarim ochiq vagonning old va ichki orqa devoriga ta’sir etayotgan aerodinamik bosim va siljish masofasi hisob ishlari amalga oshirilgan. Saralash tepaligida yopiq va yarim ochiq vagonlar harakat tezliklari solishtirilganda ko‘rish mumkinki saralash tepaligining tezlashtiruvchi uchastkasi o‘zgarishi natijasida, tezlashuvchi uchastka oxirida yarim ochiq vagon tezligini yopiq vagonga nisbatan 34,6 %ga kam ekanligi aniqlandi. Qarshi esgan shamol tezligini ta’sirini baholashda SOLIDWORKS Flow simulation paket dasturidan foydalanib natijalar olindi, bu natijalarning aniqliligini yanada oshirishni ta’minlab berdi. Vagonga ta’sir etayotgan havo oqimining maksimal aerodinamik bosimi 101,602 KPani tashkil etadi. Saralash tepaligini balandligini hisoblash jarayonlarida yarim ochiq vagonga ta’sir etadigan havo oqimini faqat old tomoniga ta’siri inobatga olib ketilgan biroq, bo‘sh yarim ochiq vagon ichida hosil bo‘ladigan turbulent havo oqimi va vagon oxirgi ko‘ndalang devoriga aerodinamik ta’sirlar vujudga kelishi modellashtirish jarayonlarida qayd etildi.

  • Internet havola
  • DOI
  • UzSCI tizimida yaratilgan sana 13-05-2024
  • O'qishlar soni 61
  • Nashr sanasi 30-12-2023
  • Asosiy tilO'zbek
  • Sahifalar237-246
English

This article carried out an analysis of the choice of the type of wagon as the worst runner, taking into account poor conditions when calculating the height of the Sorting hill. The movement of the gondola car descending from the Sorting hill has been analyzed. The classification of forces acting on a gondola car is fully illuminated. The aerodynamic pressure and displacement distance calculation work that was affecting the front and inner rear wall of the gondola car was carried out under the influence of the counter-blowing airflow. When the speed of movement of closed and gondola cars on the Sorting hill is compared, it can be seen that as a result of the change of the accelerator plot of the Sorting hill, the speed of the gondola car at the end of the accelerator plot was found to be 34.6% lower than that of the closed wagon. Results were obtained using SOLIDWORKS Flow simulation package software in assessing the impact of the wind speed experienced, which ensured a further increase in the accuracy of the results. The maximum aerodynamic pressure of the airflow affecting the wagon is 101,602 KPA. In the processes for calculating the height of the Sorting hill, the effect of the air flow affecting the gondola car only on the front was taken into account however, the turbulent air flow generated within the empty gondola car and the occurrence of aerodynamic effects on the wagon's final transverse wall were noted in the modeling processes.

Русский

В этой статье был проведен анализ выбора типа вагона как наихудшего вагона с учетом плохих условий при расчете высоты сортировочной горки. Проанализировано движение полувагона, спускающегося с сортировочной горки. Классификация сил, действующих на полувагон, освещена полностью. Произведены расчеты аэродинамического давления и расстояния скольжения, действующих на переднюю и внутреннюю заднюю стенки полувагона под действием встречного обдува потоком воздуха. При сравнении скоростей движения закрытых и полувагонов на сортировочной горке видно, что в результате изменения ускоряющего участка сортировочной горки скорость полувагона в конце разгонного участка оказалась на 34,6% меньше, чем скорость крытого вагона. При оценке влияния на скорость встречного ветра результаты были получены с помощью пакетного программного обеспечения SolidWorks Flow Simulation, что обеспечило дальнейшее повышение точности результатов. Максимальное аэродинамическое давление воздушного потока, действующего на вагон, составляет 101 602 кПа. В процессах расчета высоты сортировочной горки учитывалось влияние воздушного потока, действующего на полуоткрытый вагон, только на его переднюю часть, однако в процессах моделирования отмечалось возникновение турбулентного воздушного потока, образующегося внутри пустого полувагона, и аэродинамических воздействий на торцевую поперечную стенку вагона.

Ўзбек

Ushbu maqolada Saralash tepaligi balandligini hisoblashda yomon sharoitni inobatga olgan holda eng yomon yugurak sifatida vagon turini tanlash tahlili olib borilgan. Saralash tepaligidan tushayotgan yarim ochiq vagonning harakati tahlil qilingan. Yarim ochiq vagonga ta’sir qiluvchi kuchlar tasnifi to‘liq yoritilgan. Qarshi esayotgan havo oqimi ta’sirida yarim ochiq vagonning old va ichki orqa devoriga ta’sir etayotgan aerodinamik bosim va siljish masofasi hisob ishlari amalga oshirilgan. Saralash tepaligida yopiq va yarim ochiq vagonlar harakat tezliklari solishtirilganda ko‘rish mumkinki saralash tepaligining tezlashtiruvchi uchastkasi o‘zgarishi natijasida, tezlashuvchi uchastka oxirida yarim ochiq vagon tezligini yopiq vagonga nisbatan 34,6 %ga kam ekanligi aniqlandi. Qarshi esgan shamol tezligini ta’sirini baholashda SOLIDWORKS Flow simulation paket dasturidan foydalanib natijalar olindi, bu natijalarning aniqliligini yanada oshirishni ta’minlab berdi. Vagonga ta’sir etayotgan havo oqimining maksimal aerodinamik bosimi 101,602 KPani tashkil etadi. Saralash tepaligini balandligini hisoblash jarayonlarida yarim ochiq vagonga ta’sir etadigan havo oqimini faqat old tomoniga ta’siri inobatga olib ketilgan biroq, bo‘sh yarim ochiq vagon ichida hosil bo‘ladigan turbulent havo oqimi va vagon oxirgi ko‘ndalang devoriga aerodinamik ta’sirlar vujudga kelishi modellashtirish jarayonlarida qayd etildi.

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