Numerical investigation on thermohydraulic performance of high temperature hydrogen in twisted rod channels

2021 ◽  
Vol 161 ◽  
pp. 108434
Author(s):  
Yuliang Fang ◽  
Hao Qin ◽  
Chenglong Wang ◽  
Lei Zhou ◽  
Jing Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Numerical Investigation

Numerical Investigation of an Improved Gas and Steam Turbine Seal

1996 ◽  
Vol 210 (6) ◽  
pp. 477-479 ◽  
Author(s):  
M H Gordon ◽  
U M Kelkar ◽  
M C Johnson
Keyword(s):  
High Temperature ◽  
Numerical Investigation ◽  
High Speed ◽  
Numerical Study ◽  
Dynamic Pressure ◽  
Labyrinth Seal ◽  
Optimal Shape ◽  
Steam Turbines ◽  
Brush Seal ◽  
Sealing Mechanism

A numerical study has been conducted to assess the viability of a new sealing mechanism for gas and steam turbines. This new static-to-rotating sealing mechanism is mounted on flexible legs which permit radial movement and is designed to take advantage of the hydro-dynamic pressure forces, which result from fluid leaking around the seal, to maintain an ideally small and constant clearance. Relatively simple seal geometries have been numerically tested to find an optimal shape. These results indicate that a substantial sealing improvement (between two and four times less leakage) relative to a labyrinth seal is possible. Although these results show that a brush seal is more effective than the present seal, the present seal is designed to operate in high-speed and high-temperature environments in which the brush seal would degrade.

Numerical investigation of a ceramic high-temperature pressurized-air solar receiver

Solar Energy ◽  
2013 ◽  
Vol 90 ◽  
pp. 164-178 ◽  
Author(s):  
X. Daguenet-Frick ◽  
A. Toutant ◽  
F. Bataille ◽  
G. Olalde
Keyword(s):  
High Temperature ◽  
Numerical Investigation ◽  
Solar Receiver
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