哈尔滨工程大学学报2024，Vol.45Issue(6)：1085-1092,8.DOI:10.11990/jheu.202206078
冷却通道对引射器红外辐射特性影响的研究
Influence of a cooling channel on the infrared radiation performance of an ejector
王忠义 1吴雪 1张力敏 1孙涛 1王萌1
作者信息
- 1. 哈尔滨工程大学 动力与能源工程学院,黑龙江 哈尔滨 150001
- 折叠
摘要
Abstract
An ejector of a gas turbine exhaust system reduces the temperature of the exhaust stream and decreases the infrared radiation intensity of exhaust gas.This paper presents a subsonic ejector structure with a cooling chan-nel and a comprehensive performance factor for evaluating a cooling channel ejector.A cooling channel is added to the nozzle of the original ejector,and the coolant mixes with the high-temperature gas directly at the center of the mainstream,which can destroy the distribution of exhaust cladding,improve the uniformity of the mainstream tem-perature,and reduce the temperature in the center.This paper adopts a numerical simulation method to study the comprehensive influence of the number and depth of cooling channels and the layout of exhaust channels on the re-sistance,heat transfer,and outlet temperature distribution characteristics of the ejector.Reportedly,the number of channels is directly proportional to the heat transfer characteristics and inversely proportional to the resistance loss when single-row cooling channels are arranged.When double-row cooling channels are arranged,the resistance loss is reduced.An ejector with double rows and 12 channels can effectively reduce the total outflow temperature and uniform mainstream temperature,manifesting the highest comprehensive performance coefficient.关键词
引射器/冷却通道/温度均匀度/阻力/换热/综合系数/排气系统/数值模拟Key words
ejector/cooling channel/temperature homogeneity/resistance/heat transfer/composite coefficient/exhaust system/numerical simulation分类
能源科技引用本文复制引用
王忠义,吴雪,张力敏,孙涛,王萌..冷却通道对引射器红外辐射特性影响的研究[J].哈尔滨工程大学学报,2024,45(6):1085-1092,8.
