title: ÐÐ±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ðµ Ð²Ð¸Ð±ÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð½Ð°Ð´ÐµÐ¶Ð½Ð¾ÑÑÐ¸ ÑÐ¸Ð»Ð¾Ð²Ð¾Ð¹ ÑÑÑÐ±Ð¸Ð½Ñ ÐÐ¢Ð£ Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 2,5 ÐÐÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Ensuring vibration reliability of the power turbine with a capacity of 2.5 MW
Creators: name: ÐÐµÐ»ÐµÐ½ÐºÐ¸Ð½, ÐÐ°ÐºÑÐ¸Ð¼
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÐÐ°Ð·Ð¾Ð²ÑÐµ ÑÑÑÐ±Ð¸Ð½Ñ
Ð°ÐºÑÑÑÐ¸ÑÐµÑÐºÐ¸Ð¹ ÑÐµÐ·Ð¾Ð½Ð°Ð½Ñ
Ð°ÐºÑÑÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ
Ð°ÐºÑÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ñ Ð°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸
Ð²Ð¸Ð±ÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð´Ð¸Ð°Ð³ÑÐ°Ð¼Ð¼Ð°
Ð²ÑÑ Ð¾Ð´Ð½Ð¾Ð¹ Ð´Ð¸ÑÑÑÐ·Ð¾Ñ
acoustic resonance
acoustic model
acoustic characteristics
vibration diagram
output diffuser

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description: The stress-strain state of the impeller of the last stage of the gas turbine was calculated. The condition of impeller strength is fulfilled. A vibration diagram is constructed, which shows that the nominal speed is sufficiently far from the critical rotational speeds, which determines the vibration reliability of the impeller. The analysis of frequencies of acoustic vibrations in the output diffuser of the gas turbine unit is performed using numerical calculations of acoustic models in the ANSYS Fluent software package. A custom function for setting the boundary condition is written. Analysis of the frequencies of acoustic oscillations in the output cone showed that there are no resonant acoustic frequencies in the range of interest. Thus, the results in this paper showed that the power turbine design has vibration reliability according to the presented criteria.