Analysis of Water Injection and Improvement of Turbulent Flows in Split Cycle Engine Compressor

2021 ◽  
Author(s):  
Fabio Borgia
Keyword(s):  
Turbulent Flows ◽  
Water Injection ◽  
Engine Compressor

scholarly journals Aero engine compressor cooling by water injection - Part 1: Evaporative compressor model

Energy ◽  
2018 ◽  
Vol 160 ◽  
pp. 1224-1235 ◽  
Author(s):  
David Alejandro Block Novelo ◽  
Uyioghosa Igie
Keyword(s):  
Water Injection ◽  
Aero Engine ◽  
Engine Compressor

Stabilizing Pump-Turbine Operations Using Water Injection Passive Control

2019 ◽  
Author(s):  
Muhannad Altimemy ◽  
Bashar Attiya ◽  
Cosan Daskiran ◽  
I-Han Liu ◽  
Alparslan Oztekin
Keyword(s):  
Turbulent Flows ◽  
Control Strategy ◽  
Passive Control ◽  
Draft Tube ◽  
Water Injection ◽  
Large Eddy ◽  
Flow Induced Vibrations ◽  
Computational Fluid Dynamics Simulations ◽  
Dynamics Simulations ◽  
Turbine Mode

Abstract Computational fluid dynamics simulations are carried out to characterize the spatial and temporal characteristics of the velocity and pressure field of turbulent flows through a pumpturbine unit operating with the turbine mode. The high-fidelity large eddy simulations turbulence model is utilized to examine the flow-induced vibrations in the draft tube of the unit. The water injection from the runner cone is considered as the control strategy to mitigate the flow-induced fluctuations. The simulations are conducted for the turbine flow rate of 0.2 m3/s without and with the water injection at a rate of 0.008 m3/s. The pressure along the surface of the draft tube is probed at various locations to access the effectiveness of the water injection to mitigate fluctuations. Water injection at 4% rate is demonstrated to be effective in attenuating the pressure fluctuation inside the draft tube. The amplitude of fluctuations is reduced by nearly 50% by the water injection. The generated power is hardly influenced by water injection. Thus, the control strategy considered here could be employed effectively without a penalty on the power generation.

Film Condensation and Aerosol Deposition in Turbulent Flows with Noncondensable Gases

1997 ◽  
Vol 28 (4-6) ◽  
pp. 277-288
Author(s):  
Leonid I. Zaichik ◽  
Bulat I. Nigmatulin ◽  
Vladimir M. Alipchenkov ◽  
V. A. Belov
Keyword(s):  
Turbulent Flows ◽  
Aerosol Deposition ◽  
Film Condensation ◽  
Noncondensable Gases

STUDY ON SUBCOOLED WATER INJECTION INTO MOLTEN MATERIAL

1998 ◽  
Author(s):  
Hyun Sun Park ◽  
Norihiro Yamano ◽  
Kiyofumi Moriyama ◽  
Yu Maruyama ◽  
Yanhua Yang ◽  
...  
Keyword(s):  
Water Injection ◽  
Molten Material ◽  
Subcooled Water
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