title: Ð Ð°ÑÑÐµÑÐ½Ð¾-ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð¾Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð°ÑÑÐ¾Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐ¸ ÑÐ¸ÑÑÐµÐ¼Ñ Â«Ð¡ÑÑÐ¿ÐµÐ½Ñ-ÐÐ¸ÑÑÑÐ·Ð¾ÑÂ» Ð½Ð° ÑÐµÐ¶Ð¸Ð¼Ð°Ñ ÑÐ°ÑÑÐ¸ÑÐ½ÑÑ Ð½Ð°Ð³ÑÑÐ·Ð¾Ðº Ð³Ð°Ð·Ð¾ÑÑÑÐ±Ð¸Ð½Ð½ÑÑ ÑÑÑÐ°Ð½Ð¾Ð²Ð¾Ðº
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: A computational-experimental study of the aerodynamics of the "Stage-Diffuser" system at partial load modes of gas turbines
Creators: name: ÐÐ¸ÑÐ¾Ð»Ð¸ÑÑÐ¸Ñ, ÐÐ¿Ð¾ÑÑÐ¾Ð»Ð¾Ñ
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: 2023
Subjects: ÑÐ¸Ð»Ð¾Ð²Ð°Ñ Ð³Ð°Ð·Ð¾Ð²Ð°Ñ ÑÑÑÐ±Ð¸Ð½Ð°
ÐºÑÐ°Ð¹Ð½ÑÐµ ÑÐ°ÑÑÐ¸ÑÐ½ÑÐµ ÑÐµÐ¶Ð¸Ð¼Ñ ÑÐ°Ð±Ð¾ÑÑ
ÑÐµÐ¶Ð¸Ð¼ Ñ Ð¾Ð»Ð¾ÑÑÐ¾Ð³Ð¾ Ñ Ð¾Ð´Ð°
Ð²ÐµÐ½ÑÐ¸Ð»ÑÑÐ¸Ð¾Ð½Ð½ÑÐ¹ ÑÐµÐ¶Ð¸Ð¼
Ð´Ð²ÑÑ ÑÑÑÑÑÐ½Ð°Ñ ÑÑÑÐ±Ð¸Ð½Ð° Ð­Ð¢4
ÑÑÑÐ¿ÐµÐ½Ñ ÐÐ°ÑÐ¼Ð°Ð½Ð°
Ansys CFX
Ð´Ð¸ÑÑÑÐ·Ð¾Ñ
Ð²ÑÑ Ð¾Ð´Ð½Ð¾Ð¹ ÑÑÐ°ÐºÑ
Ð¿ÑÐ»ÑÑÐ°ÑÐ¸Ð¸ Ð´Ð°Ð²Ð»ÐµÐ½Ð¸Ñ
power gas turbine
extreme partial regimes
no-load mode
ventilation mode
two-stage turbine ET4
(stage Baumann)
diffuser
outlet duct
pressure pulsations

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description: Subject of graduate qualification work: "Calculated-experimental research of aerodynamics of "Stage-Diffuser" system in partial load modes of gas turbine plants." or work with the experimental stand ET4 to study aerodynamics of "Stage-Diffuser" system in partial load modes. This work is devoted to the modification and design of a new flow part with corresponding root and peripheral parts of the experimental turbine ET4, which is in the Laboratory of Turbine Engineering named after I. I. Kirillov. Kirillov SPbPU, so that we could start numerical modeling of extreme partial modes of turbine operation close to no-load mode. Therefore, according to the goals set, the following research tasks arise within this masters work: 1. Determining whether we can simulate extreme partial modes with this design of the ET4 turbine. 2. To design root and peripheral parts of turbine ET4 to add one more stage (correspondingly 3rd stage of power turbine GTE-65) to the last current stage of turbine ET4 (correspondingly 4th stage of power turbine GTE-65). 3. 3. Adding one more stage to ET4, numerical simulation, by means of ANSYS CFX, of the working body flow and determination of flow parameters so that looking at power balance of the 3rd stage (generating power) and the 4th stage (consuming power) the total power was equal to zero and the flow coefficient in ET4 was the same as that of the power GTU which operates in idle mode. This can still be roughly modeled when the flow exit angle from the last stage was about Î±2_4th stage=20 degrees (ventilation mode). 4. Re-modification of the flow part (root and peripheral parts) of the ET4 turbine so that the 3rd (penultimate) stage becomes a double stage (Bauman stage). 5. Designing the upper tier and calculating the average diameter. 6. Numerical modeling of aerodynamics and flow of working body, using ANSYS CFX through the lower and upper tier of the turbine. Determination of power balance and exit angles from the last stage and flow coefficient. 7. Evaluation of the results obtained. Suggestions for other ways of modeling extreme partial modes and idling modes.