Improvement of Inlet Flow Characteristics of LE-7A Liquid Hydrogen Pump

2002 ◽  
Author(s):  
Masaharu Uchiumi ◽  
Akira Konno ◽  
Kenjiro Kamijo ◽  
Tomoyuki Hashimoto ◽  
Satoshi Kobayashi
Keyword(s):  
Flow Characteristics ◽  
Liquid Hydrogen ◽  
Inlet Flow ◽  
Hydrogen Pump

Improvement of Inlet Flow Characteristics of LE-7A Liquid Hydrogen Pump

2003 ◽  
Vol 19 (3) ◽  
pp. 356-363 ◽  
Author(s):  
Masaharu Uchiumi ◽  
Kenjiro Kamijo ◽  
Kunio Hirata ◽  
Akira Konno ◽  
Tomoyuki Hashimoto ◽  
...  
Keyword(s):  
Flow Characteristics ◽  
Liquid Hydrogen ◽  
Inlet Flow ◽  
Hydrogen Pump

Operational techniques used in liquid hydrogen pump inducer studies

1970 ◽  
Author(s):  
J. CONNELL ◽  
J. HENSHALL ◽  
W. TUCKER
Keyword(s):  
Liquid Hydrogen ◽  
Hydrogen Pump

Liquid Hydrogen Pump

1964 ◽  
Author(s):  
W. N. Hall ◽  
P. Hildebrand ◽  
D. S. Ko
Keyword(s):  
Liquid Hydrogen ◽  
Hydrogen Pump

scholarly journals Random pore structure and REV scale flow analysis of engine particulate filter based on LBM

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 881-896
Author(s):  
Chunrui Wu ◽  
Tiechen Zhang ◽  
Jiale Fu ◽  
Xiaori Liu ◽  
Boxiong Shen
Keyword(s):  
Single Channel ◽  
Flow Analysis ◽  
Flow Characteristics ◽  
Axial Direction ◽  
Particulate Filter ◽  
Random Structure ◽  
Structure Generation ◽  
Inlet Flow ◽  
Random Structures ◽  
Boltzmann Method

Abstract In this article, lattice Boltzmann method (LBM) is used to simulate the multi-scale flow characteristics of the engine particulate filter at the pore scale and the representative elementary volume (REV) scale, respectively. Four kinds of random wall-pore structures are considered, which are circular random structure, square random structure, isotropic quartet structure generation set (QSGS), and anisotropic QSGS, with difference analysis done. In terms of the REV scale, the influence of different inlet flow velocities and wall permeabilities on the flow in single channel is analyzed. The result indicates that the internal seepage laws of random structures constructed in this article and single channel are in accordance with Darcy’s law. Circular random structure has better permeability than square random structure. Isotropic QSGS has better fluidity than anisotropic one. The flow in single channel is similar to Poiseuille flow. The flow lines in the channel are complicated and a large number of vortices appear at the ends of channel with high inlet flow rate. With the increase of inlet velocity, the static pressure in channel gradually increases along the axial direction as well as the seepage velocity. The temperature field in the channel becomes more uniform as the flow velocity increases, and the higher temperature distribution appears on the wall of the porous media.

scholarly journals Investigation of the effects of main geometric parameters and flow characteristics on secondary flow losses in a turbine cascade

2021 ◽  
Vol 2131 (3) ◽  
pp. 032081
Author(s):  
M Mesbah ◽  
V G Gribin ◽  
K Souri
Keyword(s):  
Mach Number ◽  
Aspect Ratio ◽  
Total Energy ◽  
Flow Characteristics ◽  
Numerical Results ◽  
Energy Losses ◽  
Inlet Flow ◽  
Flow Angle ◽  
Flow Losses ◽  
Exit Mach Number

Abstract This paper presents numerical simulation results of a three-dimensional (3D) transitional flow in a stator cascade of an axial turbine. The influences of the main geometric parameters and flow characteristics including, the blade aspect ratio, pitch-to-chord ratio, inlet flow angle, and exit Mach number, on secondary flows development and end-wall losses, were studied. The numerical results were validated by the results of experiments conducted in the laboratory of the steam and gas turbine faculty of the Moscow Power Engineering Institute. The maximum difference between computed and experimental results was 2.4 %. The total energy losses decrease by 20 % when the exit Mach number changes from 0.38 to 0.8. Numerical results indicated that the blade aspect ratio had the most effect on secondary flow losses. The total energy losses increase by 46.6 % when the aspect ratio decreases from 1 to 0.25. The total loss of energy by 13.2 % decreases by increasing the inlet flow angle from 60 degrees to 90 degrees. Then by increasing the inlet flow angle from 90 to 110 degrees, the total loss rises by 3.6%. As the pitch-to-chord ratio increases from 0.7 to 0.75, the total energy losses are reduced by 12.2 %. Then by increasing the pitch-to-chord ratio from 0.75 to 0.8, the total energy losses increase by 6 %. As with experimental data, the numerical results showed that the optimal inlet flow angle and relative pitch for the cascade are 90 degrees and 0.75, respectively.

scholarly journals Observations of Inlet Flow at Liquid Hydrogen Turbopump Inducer

2001 ◽  
Vol 21 (2Supplement) ◽  
pp. 135-138
Author(s):  
Mitsuo WATANABE ◽  
Satoshi HASEGAWA ◽  
Tomoyuki HASHIMOTO ◽  
Hitoshi YAMADA ◽  
Isao KUBOTA ◽  
...  
Keyword(s):  
Liquid Hydrogen ◽  
Inlet Flow
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