The comparison between theoretical and experimental pressure distribution on a blade in cascade nozzle for a particulate gas flow

1971 ◽  
Author(s):  
M. HUSSEIN
Keyword(s):  
Pressure Distribution ◽  
Gas Flow ◽  
Experimental Pressure

Effect of Solid Particles on Turbine Performance

1976 ◽  
Vol 98 (1) ◽  
pp. 47-52 ◽  
Author(s):  
W. Tabakoff ◽  
W. Hosny ◽  
A. Hamed
Keyword(s):  
Pressure Distribution ◽  
Gas Flow ◽  
Theoretical Method ◽  
Solid Particles ◽  
Injection System ◽  
Particle Injection ◽  
Turbine Efficiency ◽  
Turbine Performance ◽  
Experimental Pressure ◽  
Good Agreement

A theoretical method was developed for predicting the pressure distribution over a blade in cascade for a compressible flow with solid particles. Experimental results were obtained from a cascade wind tunnel equipped with a solid particle injection system. Good agreement was noted between the theoretical and experimental pressure distribution. The change in pressure due to the particles gives reduction in the force on the blades. The presence of solid particles in air-breathing engine gas flow changes the turbine performance. The overall turbine efficiency decreases as a result of the introduction of solid particles. The performance experiment was performed on a two-stage velocity-compounded turbine.

Pressure distribution in gas flow in the presence of a fibrous filter in the channel

1976 ◽  
Vol 31 (2) ◽  
pp. 922-924
Author(s):  
B. I. Ogorodnikov ◽  
V. I. Skitovich ◽  
V. I. Khabarov
Keyword(s):  
Pressure Distribution ◽  
Gas Flow ◽  
Fibrous Filter

The Relationship Between Breach Development and the Depressurization Transient During Axial Rupture of a Gas-Pressurized Steel Pipe

1982 ◽  
Vol 104 (1) ◽  
pp. 20-24 ◽  
Author(s):  
M. R. Baum
Keyword(s):  
Rarefaction Wave ◽  
Gas Flow ◽  
Theoretical Models ◽  
Observation Point ◽  
Steel Pipe ◽  
Growth Data ◽  
Flow Through ◽  
The Relationship ◽  
Experimental Pressure ◽  
Good Agreement

Theoretical models are developed to predict the depressurization generated by a propagating axial rupture in a gas-pressurized steel pipe. The pressure transient is composed of a relatively slow depressurization within the rarefaction wave which propagates through the undisturbed gas ahead of the developing breach and a rapid depressurization within the breach zone. The models combine a simplified one-dimensional treatment of the gas flow local to the breach with experimental breach area growth data. An instantaneous steady flow through the developing breach is assumed to determine the boundary condition for the rarefaction wave. The breach zone depressurization is assumed to be dominated by the transverse wave action initiated by the arrival of the breach at the observation point. In both cases the predicted transients are in good agreement with experimental pressure histories.

Analysis of pressure distribution for the various gas flow vacuum system in the range from 1Pa to 133Pa

Measurement ◽  
2013 ◽  
Vol 46 (2) ◽  
pp. 851-854
Author(s):  
S.S. Hong ◽  
Wakil khan ◽  
Y.K. Park ◽  
Y.H. Shin
Keyword(s):  
Pressure Distribution ◽  
Gas Flow ◽  
Vacuum System

The Study of the Ventilation Influence to Gas-Based Direct Reduction Shaft Furnace Flow Field

2013 ◽  
Vol 405-408 ◽  
pp. 2990-2993
Author(s):  
Ming Hua Bai ◽  
Jun Li Ge ◽  
Ying Min Piao ◽  
Jian Wang ◽  
Yuan Xiang Fu ◽  
...  
Keyword(s):  
Flow Field ◽  
Pressure Distribution ◽  
Gas Flow ◽  
Shaft Furnace ◽  
Direct Reduction ◽  
Gas Velocity ◽  
Reducing Gas ◽  
Key Factor ◽  
Reduction Section ◽  
Furnace Reduction

Direct reduced iron (DRI) shaft furnace flow field has important influence to the DRI production process, and the ventilation is a key factor for the velocity and pressure distribution of the gas flow in the furnace. At present works, the direct reducing gas velocity distribution and pressure distribution of DRI shaft furnace were studied with different ventilation. By the analysis of numerical simulation, the result was found that the direct reducing gas velocity increase with height in the shaft furnace reduction section. The velocity of the direct reducing gas augment with the increase of ventilation. The direct reducing gas pressure add with increasing height in the shaft furnace reduction section. With ventilation increasing, the pressure of the shaft furnace ventral part increase, and the pressure gradient increase in the direction of height in the DRI shaft furnace.

Aeroelastic Analysis of Last Stage LP Steam Turbine Rotor Blades With Exhaust Hood for Various Non-Nominal Regimes

2018 ◽  
Author(s):  
Romuald Rzadkowski ◽  
Vitaly Gnesin ◽  
Lubov Kolodyazhnaya ◽  
Ryszard Szczepanik
Keyword(s):  
Pressure Distribution ◽  
Steam Turbine ◽  
Gas Flow ◽  
Element Model ◽  
Turbine Rotor ◽  
Ideal Gas ◽  
Rotor Blades ◽  
Exhaust Hood ◽  
Flow Through ◽  
Last Stage

Presented here are the numerical calculations of the 3D transonic flow of an ideal gas through an LP steam turbine last stage with exhaust hood, taking into account blade oscillations. The approach is based on a solution to the coupled aerodynamic-structure problem for 3D flow through a turbine stage using the partially integrated method. The blade oscillations and loads acting on the blades are a part of the solution. An ideal gas flow through the stator and moving rotor blades with periodicity on the whole annulus is described by unsteady Euler conservation equations, integrated with the Godunov-Kolgan explicit monotonous finite-volume difference scheme and a moving hybrid H-H rotor blade grid. The structural analysis uses the modal approach and a 3D finite element model of a blade. The proposed algorithm allows for the calculation of turbine stages with an arbitrary pitch ratio of stator and rotor blades, taking into account unsteady-load induced blade oscillations. The pressure distribution behind the rotor blades was non-uniform on account of the exhaust hood. As a result of the fluid-structure interaction and exhaust hood induced nonsymmetrical pressure distribution behind the rotor blades, the first blade mode was no longer bending but bending-torsion.

Sign in / Sign up

Export Citation Format

Share Document