title: Ð§Ð¸ÑÐ»ÐµÐ½Ð½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð³Ð°Ð·Ð¾Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐ¸ Ð² Ð²ÑÑ Ð¾Ð´Ð½Ð¾Ð¼ ÑÑÑÐ±Ð¸Ð½Ð½Ð¾Ð¼ Ð´Ð¸ÑÑÑÐ·Ð¾ÑÐµ Ñ Ð²Ð½ÐµÑÐ½Ð¸Ð¼ Ð¾Ñ Ð»Ð°Ð¶Ð´ÐµÐ½Ð¸ÐµÐ¼ Ð¿Ð°ÑÐ¾Ð²ÑÐ¼ Ð¿Ð¾ÑÐ¾ÐºÐ¾Ð¼
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: Numerical simulation of gas dynamics in an outlet turbine diffuser with external cooling by a steam flow
Creators: name: Ð¢Ð²ÐµÑÐ´Ð¾ÑÐ»ÐµÐ±, ÐÐ»ÐµÐ½Ð°
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: 2021
Subjects: ÐÐ°Ð·Ð¾Ð²ÑÐµ ÑÑÑÐ±Ð¸Ð½Ñ
ÐÐ¸ÑÑÑÐ·Ð¾ÑÑ
ÐÐ°Ð·Ð¾ÑÑÑÐ±Ð¸Ð½Ð½ÑÐµ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ¸

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description: This paper discusses the issue of forced steam cooling of a gas turbine and its effect on the operation of the diffuser, as well as the efficiency of replacing the second stage of the CCGT superheater. Methods for increasing the efficiency of gas turbines are presented: the advantages of using diffuser systems at the outlet of the turbine are described. Numerical simulation of the flow in the outlet turbine diffuser is presented, the corresponding turbulence model is selected. Numerical modeling was performed using the ANSYS CFX package. The nature of the flow in the diffuser and the effect of steam cooling on it are investigated. The results of numerical experiments have shown that the superheater located on the surface of the outlet turbine diffuser not only corresponds to, but also exceeds the performance indicators of the superheater stage in the waste heat boiler. Also, the effectiveness of this method of thermal insulation was assessed, which had a positive result. In the process of analyzing the obtained flow parameters in the flow path, it was concluded that external cooling does not significantly affect the operation of the âStage - Diffuserâ unit.