Calculation of two-phase flow in gas turbine combustors

1996 ◽  
Vol 22 ◽  
pp. 147
Author(s):  
A Tolpadi
Keyword(s):  
Gas Turbine ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Gas Turbine Combustors

OPTICAL MEASUREMENTS OF THE REACTING TWO-PHASE FLOW IN A REALISTIC GAS TURBINE COMBUSTOR AT ELEVATED PRESSURES

2006 ◽  
Vol 16 (5) ◽  
pp. 475-492 ◽  
Author(s):  
Thomas Behrendt ◽  
Martin Carl ◽  
Johannes Heinze ◽  
Christoph Hassa
Keyword(s):  
Gas Turbine ◽  
Two Phase Flow ◽  
Optical Measurements ◽  
Phase Flow ◽  
Gas Turbine Combustor ◽  
Two Phase ◽  
Elevated Pressures

REVAP® Cycle: A New Evaporative Cycle Without Saturation Tower

1997 ◽  
Vol 119 (4) ◽  
pp. 893-897 ◽  
Author(s):  
J. De Ruyck ◽  
S. Bram ◽  
G. Allard
Keyword(s):  
Heat Exchange ◽  
Gas Turbine ◽  
Two Phase Flow ◽  
Curve Analysis ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Heat ◽  
Turbine Equipment ◽  
Composite Curve ◽  
A Performance

A new evaporative cycle layout is disclosed that is shown to have a performance similar to the HAT cycle, but where the saturation tower has been eliminated. This new cycle is a result of a combined exergetic and composite curve analysis discussed in a previous paper, assuming one intercooler and no reheat (De Ruyck et al., 1995). The new cycle uses two-phase flow heat exchange in the misty regime, which is a well-known process. Existing aeroderivative gas turbine equipment can be adapted for application of this cycle, which therefore needs a minimum of development.

scholarly journals REVAP® Cycle: A New Evaporative Cycle Without Saturation Tower

1996 ◽  
Author(s):  
J. De Ruyck ◽  
S. Bram ◽  
G. Allard
Keyword(s):  
Heat Exchange ◽  
Gas Turbine ◽  
Two Phase Flow ◽  
Curve Analysis ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Heat ◽  
Turbine Equipment ◽  
Composite Curve ◽  
A Performance

A new evaporative cycle layout is disclosed which is shown to have a performance similar to the HAT cycle, but where the saturation tower has been eliminated. This new cycle is a result from a combined exergetic and composite curve analysis discussed in a previous paper, assuming one intercooler and no reheat (De Ruyck et al, 1995). The new cycle uses two-phase flow heat exchange in the misty regime, which is a well known process. Existing aeroderivative gas turbine equipment can be adapted for application of this cycle, which therefore needs a minimum of development.

Heat transfer comparison investigation of mist/steam two-phase flow and steam in a square smooth channel

2019 ◽  
Vol 233 (7) ◽  
pp. 877-889
Author(s):  
Xiaojun Shi ◽  
Guangwen Jiang ◽  
Jianmin Gao ◽  
Guanwen Chen ◽  
Liang Xu
Keyword(s):  
Heat Transfer ◽  
Temperature Distribution ◽  
Gas Turbine ◽  
Wall Temperature ◽  
Two Phase Flow ◽  
Working Fluid ◽  
Internal Cooling ◽  
Phase Flow ◽  
Two Phase ◽  
Cooling Passage

A small amount of fine water droplets is injected into steam to form mist/steam two-phase flow as the working fluid of internal cooling passages of blades and vanes, which is a promising cooling technology to replace compressed air cooling for next generation gas turbine. To simulate mist/steam flow in the internal cooling passage of gas turbine blade/vane, a smooth square channel was made by welding four stainless steel plates. The test channel employs a hydraulic diameter of 40 mm and a length of 420 mm. The thickness of the channel plate is 3 mm. The wall temperature distribution and averaged Nusselt number ratio of mist/steam and steam-only in this channel were numerically and experimentally investigated under the same test conditions for comparison. The effects of Reynolds number, wall heat flux and mass flow rate on the heat transfer performance have been analyzed. The results show that within the scope of allowable error the calculated results were acceptable to simulate the experiment subject with the numerical model in this work. Compared with steam-only, the variation trend of wall temperature distribution cooled by the mist/steam is different at the middle region of the test section. The heat transfer coefficient of mist/steam two-phase flow is significantly improved.

Investigation of the Two-Phase Flow Field of the GTX100 Compressor Inlet During Off-Line Washing

2004 ◽  
Author(s):  
Ulf Engdar ◽  
Raik C. Orbay ◽  
Magnus Genrup ◽  
Jens Klingmann
Keyword(s):  
Flow Field ◽  
Gas Turbine ◽  
Two Phase Flow ◽  
Ambient Air ◽  
Inlet Temperature ◽  
Phase Flow ◽  
Two Phase ◽  
Compressor Inlet ◽  
Program Star ◽  
On Line

A modern gas turbine compressor, with its highly aerodynamically loaded blades, is sensitive to changes in profile shape and to surface roughness. Fouling is inevitable, despite highly efficient filtration systems. The remedy to this problem is washing. There are two different approaches, on-line or off-line washing. The off-line wash is the most effective one, whilst on-line washing only prolongs the interval between off-line washes. Most findings in this field are highly empirical, being based on some 50 years of industrial gas turbine operation. This paper is an investigation of the two-phase flow in the bellmouth of the compressor during off-line washing conditions. The unit under study was the GTX100 turbo-set. Computational fluid dynamics (CFD) is used in this paper to perform a detailed study of the flow field. The main emphasis has been on studying the characteristics of the injected spray used for cleaning of the compressor. The benefit of heating this fluid is of special interest, since if this heating can be avoided, the outage time for the off-line compressor wash can be shortened. To provide the CFD computations with accurate boundary conditions for the spray, laser-based measurements of a spray, originating from an authentic wash nozzle, have been conducted. The commercial CFD program Star-Cd has been used for all computations. The computations show that the water injected, regardless of its inlet temperature, is cooled down to ambient air temperature well before the spray reaches the inlet guide vanes. This indicates that heating of the wash fluid can be abolished. The airflow seems not to be to influenced by the injected fluid to any great extend.

scholarly journals Two-Phase Flow Phenomena in Gas Turbine Compressors with a Focus on Experimental Investigation of Trailing Edge Disintegration

Aerospace ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 91
Author(s):  
Adrian Schlottke ◽  
Bernhard Weigand
Keyword(s):  
Experimental Investigation ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Two Phase Flow ◽  
Droplet Diameter ◽  
Air Flow ◽  
Diameter Distribution ◽  
Phase Flow ◽  
Trailing Edge ◽  
Two Phase

Two-phase flow in gas turbine compressors occurs, for example, at heavy rain flight condition or at high-fogging in stationary gas turbines. The liquid dynamic processes are independent of the application. An overview on the processes and their approach in literature is given. The focus of this study lies on the experimental investigation of the trailing edge disintegration. In the experiments, shadowgraphy is used to observe the disintegration of a single liquid rivulet with constant liquid mass flow rate at the edge of a thin plate at different air flow velocities. A two side view enables calculating droplet characteristics with high accuracy. The results show the asymptotic behavior of the ejected mean droplet diameters and the disintegration period. Furthermore, it gives a detailed insight into the droplet diameter distribution and the spreading of the droplets perpendicular to the air flow.

Sign in / Sign up

Export Citation Format

Share Document