Efficiency of hydrogen combustion in a high-temperature supersonic air flow for different methods of injection

1999 ◽  
Vol 35 (2) ◽  
pp. 113-118 ◽  
Author(s):  
V. A. Zabaikin
Keyword(s):  
High Temperature ◽  
Air Flow ◽  
Hydrogen Combustion

Evaporation of a water-alcoholic solution drop in a high-temperature air flow

2021 ◽  
Author(s):  
Boris V. Borisov ◽  
Ruslan T. Zakiev ◽  
Alexander S. Naumkin
Keyword(s):  
High Temperature ◽  
Air Flow ◽  
Alcoholic Solution

scholarly journals Features of thermodynamic and thermal processes in hydrogen combustion units and systems on their basis

2021 ◽  
Vol 2039 (1) ◽  
pp. 012032
Author(s):  
A I Schastlivtsev ◽  
V I Borzenko
Keyword(s):  
High Temperature ◽  
Combustion Products ◽  
Hydrogen Combustion ◽  
Thermal Processes ◽  
Steam Generators ◽  
Temperature Combustion ◽  
Main Components ◽  
High Temperature Combustion

Abstract The main types and designs of hydrogen combustion units (HCU), including hydrogen-oxygen steam generators, superheaters and air heaters of various power levels, are considered. The main problems arising in the development, creation and testing of such installations are determined, including the problems of cooling the most heat-stressed units, mixing of the main components of the fuel and oxidizer, mixing of high-temperature combustion products and ballasting components, problems associated with the completeness of hydrogen combustion and ensuring safety during operation.

The effects of subsonic and supersonic dissociated air flow on the surface of ultra-high-temperature HfB2-30 vol% SiC ceramics obtained using the sol-gel method

2020 ◽  
Vol 40 (4) ◽  
pp. 1093-1102 ◽  
Author(s):  
Elizaveta P. Simonenko ◽  
Nikolay P. Simonenko ◽  
Andrey N. Gordeev ◽  
Anatoly F. Kolesnikov ◽  
Anton S. Lysenkov ◽  
...  
Keyword(s):  
High Temperature ◽  
Air Flow ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Sic Ceramics ◽  
Dissociated Air ◽  
Ultra High Temperature

Drought Events and Causes in North China in 2018

2020 ◽  
Author(s):  
Jianying Feng ◽  
Yu Zhang ◽  
Suping Wang
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Inner Mongolia ◽  
Northeast China ◽  
North China ◽  
Air Flow ◽  
Liaoning Province ◽  
Severe Drought ◽  
Pressure Ridge ◽  
Moderate Drought

<p>In 2018, severe meteorological drought occurred in the southwest of Northeast China, the  east-central of Inner Mongolia and the east of North China. Drought shows obvious regional and stage nature .In early March, mild to moderate drought appeared in North China, followed by severe drought in parts of northern and eastern of Hebe province. After the middle of April, the drought was alleviated obviously, and the drought in the southwest of Northeast China began to show signs. In  early May, there was mild to moderate drought in the central and eastern part of Inner Mongolia, and the drought in Northeast China developed. From June to early August, severe drought and above occurred in parts of Liaoning province , Inner Mongolia and North China. In mid-August, in addition to Liaoning province and North China, there were scattered light to moderate drought, drought relief in the northern China. In early September, the drought in North China increased and the range spread northward, and there were droughts of different degrees in the whole North China.In winter, there is only mild drought in North China.</p><p>The drought in this region has affected the agricultural production in different degrees. Spring sowing is blocked in the east of Inner Mongolia and the west of Northeast China, and high temperature in summer leads to the development of drought, corn and rice and other crops are adversely affected.</p><p>From spring to autumn, the precipitation in most parts of the drought disaster  area is less than 10-40%, and the temperature is higher than 1-2 ℃. The lack of precipitation and abnormal high temperature accelerated the loss of surface water, which resulted in the occurrence of drought in this area.</p><p>In spring of 2018, the middle and high latitudes are generally controlled by flat air flow, which is not conducive to the establishment of trough ridge, making the northern dry area lack of favorable precipitation conditions; in summer and autumn, the existence of Baikal Lake high-pressure ridge, resulting in circulation patterns that are not conducive to the precipitation conditions in the northern dry area. Among them, the obvious flat air flow in spring and the obvious high pressure ridge in summer are the main reasons for the outstanding drought in spring and summer in the northern arid area.</p>

P038 Development of High-Temperature and High-Humidity Air Flow Generator and Its Uncertainty Evaluation

2016 ◽  
Vol 2016.91 (0) ◽  
pp. 412
Author(s):  
Hidenori YOSHIOKA ◽  
Hiroyuki IYOTA ◽  
Kohei MIURA ◽  
Satoshi YUTANI ◽  
Hisashi ABE
Keyword(s):  
High Temperature ◽  
Air Flow ◽  
Uncertainty Evaluation ◽  
High Humidity ◽  
Flow Generator

Experiment Study of Heat Transfer in Aeroengine Bearing Chambers

2011 ◽  
Vol 86 ◽  
pp. 448-453
Author(s):  
Xi Chuan Yuan ◽  
Hui Guo ◽  
Liang Yun Wang
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
High Temperature ◽  
Transfer Coefficient ◽  
Transfer Test ◽  
Air Flow ◽  
Experiment Study ◽  
Work Condition ◽  
Oil Flow ◽  
Turboshaft Engine

In this paper, a method of heat transfer test research in aeroengine bearing chamber has been introduced. The method attains the law of heat transfer in bearing chamber and the influence of heat transfer coefficient on bearing dn value, oil flow, supply oil temperature, sealing air flow by simulating the oil work condition in turboshaft engine typical high temperature bearing chamber.

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