Supersonic Flow in Turbines and Compressors

1942 ◽  
Vol 46 (375) ◽  
pp. 64-85
Author(s):  
K. W. Sorg
Keyword(s):  
Supersonic Flow ◽  
General Type ◽  
Supersonic Velocity ◽  
Theoretical Research ◽  
Steam Turbines ◽  
Flow Through ◽  
Turbo Machinery ◽  
Laval Nozzles

Whereas a body of theoretical research is available on the conditions of supersonic flow through Laval nozzles and around aerofoils, such is lacking for turbo-machinery in general, with the exception of some researches by Stodola, confined to axial steam turbines. The present paper investigates some important questions relating to the flow at supersonic velocity through centrifugal machines of the general type.

scholarly journals Effects of Probe Supports on Measurements in Steam Turbines

1986 ◽  
Author(s):  
L. C. Squire
Keyword(s):  
Supersonic Flow ◽  
Mass Flow ◽  
Support Systems ◽  
Steam Turbines ◽  
Interference Effects ◽  
Suction Surface ◽  
Trailing Edge ◽  
Blade Passage ◽  
Flow Reduction ◽  
Flow Through

This paper presents the results of an investigation of the interference effects produced within the blade passages due to the support systems used to position probes downstream of the trailing edge in the interblade regions. The support systems studied consist of simple circular rods and it is shown that the presence of these probe stems can have a very large effect on the flow through the blade passage. In all cases the presence of the probe stem reduces the mass flow through the passage directly upstream of the probe with, in some cases, the flow reduction being so great as to eliminate all regions of supersonic flow on the suction surface of the blade. The paper also describes the results of preliminary tests aimed at reducing these effects; further work on this aspect of the study is continuing.

scholarly journals Response surface analysis of nozzle parameters at supersonic flow through microjets

2021 ◽  
pp. 1-16
Author(s):  
Turki Al-Khalifah ◽  
Abdul Aabid ◽  
Sher Afghan Khan ◽  
Muhammad Hanafi Bin Azami ◽  
Muneer Baig
Keyword(s):  
Supersonic Flow ◽  
Response Surface ◽  
Surface Analysis ◽  
Response Surface Analysis ◽  
Flow Through

Transient behavior of supersonic flow through inlets

1990 ◽  
Author(s):  
H. PORDAL ◽  
P. KHOSLA ◽  
S. RUBIN
Keyword(s):  
Supersonic Flow ◽  
Transient Behavior ◽  
Flow Through

Advanced Aerodynamic Sealing System for Thermo Turbo Machinery

2003 ◽  
Author(s):  
Karl E. Uth ◽  
Edward G. Dong
Keyword(s):  
Electric Power ◽  
New Technologies ◽  
Aerospace Industry ◽  
Pollutant Emissions ◽  
Steam Turbines ◽  
Labyrinth Seals ◽  
Turbo Machinery

This paper presents the feasibility of using advanced aerodynamic sealing systems to replace aged labyrinth seals in gas & steam turbines for the electric power generating and aerospace industry. Focus is on promoting new technologies in the power generating industry to reduce pollutant emissions.

Development of a Course on Gas and Steam Turbines Supported by Cost-Efficient Turbomachinery Experiments

2014 ◽  
Author(s):  
Stefan aus der Wiesche
Keyword(s):  
Applied Sciences ◽  
Great Part ◽  
Cycle Performance ◽  
Experimental Investigations ◽  
Steam Turbines ◽  
University Of Applied Sciences ◽  
Flow Through ◽  
Cost Efficient ◽  
Gas Turbine Cycle ◽  
University Laboratory

Based on a voice-of-the-industry survey covering major turbine manufactures as well as power plant owners and operators an undergraduate course on gas and steam turbines was developed at Muenster University of Applied Sciences. This course is also supported by cost-efficient experiments. The experimental investigations on laboratory test rigs are making the students more familiar with turbomachinery phenomena like gas turbine cycle performance, fundamental rotordynamics, blade vibrations, and flow through turbine cascades and loss correlations. The experiments and test rigs were developed in great part by students as part of their Bachelor or Master theses. Furthermore, the experiments did not require tremendous efforts or an expensive infrastructure; they were operated in typical University laboratory environments.

Degradation in Turbo Machinery

2008 ◽  
Author(s):  
John C. Westcott ◽  
Lawrence A. Penna
Keyword(s):  
Gas Turbines ◽  
Loss Factor ◽  
Acceptance Testing ◽  
Steam Turbines ◽  
Boiler Operation ◽  
Turbo Machinery ◽  
Contract Language ◽  
Special Case

Gas turbines and steam turbines start to degrade in performance when they first start running. This paper lists the causes of degradation, describes how to monitor degradation, and suggests techniques for minimizing degradation. This paper also suggests how degradation can be handled in contract language for acceptance testing. Lastly, this paper explores a special case, often misunderstood, namely how boiler operation needs to be accounted for when evaluating the effect of degradation (the loss factor) of an HP turbine in a reheat cycle.

Sign in / Sign up

Export Citation Format

Share Document