Numerical simulation and experimental validation of the cavitating flow through a ball check valve

2014 ◽  
Vol 78 ◽  
pp. 776-786 ◽  
Author(s):  
José R. Valdés ◽  
José M. Rodríguez ◽  
Raúl Monge ◽  
José C. Peña ◽  
Thomas Pütz
Keyword(s):  
Numerical Simulation ◽  
Experimental Validation ◽  
Check Valve ◽  
Cavitating Flow ◽  
Flow Through

scholarly journals Numerical Simulation of the Flow Through Metallic Foams: Multiscale Modeling and Experimental Validation

2010 ◽  
Author(s):  
J.-F. Hétu ◽  
F. Ilinca ◽  
J.-P. Marcotte ◽  
E. Baril ◽  
L. P. Lefebvre ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Multiscale Modeling ◽  
Experimental Validation ◽  
Metallic Foams ◽  
Flow Through

Numerical simulation of gas flow through porous sandstone and its experimental validation

Fuel ◽  
2011 ◽  
Vol 90 (2) ◽  
pp. 547-554 ◽  
Author(s):  
M.S.A. Perera ◽  
P.G. Ranjith ◽  
S.K. Choi ◽  
D. Airey
Keyword(s):  
Numerical Simulation ◽  
Gas Flow ◽  
Experimental Validation ◽  
Porous Sandstone ◽  
Flow Through

Numerical simulation and experimental validation of angular distortion and residual stresses in a T-joint

2015 ◽  
Vol 57 (7-8) ◽  
pp. 628-634
Author(s):  
Jing Chen ◽  
Liying Wang ◽  
Zhendong Shi ◽  
Zhen Dai ◽  
Meiqing Guo
Keyword(s):  
Numerical Simulation ◽  
Residual Stresses ◽  
Experimental Validation ◽  
Angular Distortion

Numerical Simulation of Cavitating Flow in a Francis Turbine

2008 ◽  
Author(s):  
Lingjiu Zhou ◽  
Zhengwei Wang ◽  
Yongyao Luo ◽  
Guangjie Peng
Keyword(s):  
Numerical Simulation ◽  
Transport Equation ◽  
Flow Rate ◽  
Suction Side ◽  
Cavitating Flow ◽  
Francis Turbine ◽  
Efficiency Change ◽  
Experiment Data ◽  
Calculation Results ◽  
Vapor Fraction

The 3-D unsteady Reynolds averaged Navier-tokes equations based on the pseudo-homogeneous flow theory and a vapor fraction transport-equation that accounts for non-condensable gas are solved to simulate cavitating flow in a Francis turbine. The calculation results agreed with experiment data reasonably. With the decrease of the Thoma number, the cavity first appears near the centre of the hub. At this stage the flow rate and the efficiency change little. Then the cavity near the centre of the hub grows thick and the cavities also appear on the blade suction side near outlet. With further reduce of the Thoma number the cavitation extends to the whole flow path, which causes flow rate and efficiency decrease rapidly.

Enhanced vortex stability in trapped vortex combustor

2010 ◽  
Vol 114 (1155) ◽  
pp. 333-337 ◽  
Author(s):  
S. Vengadesan ◽  
C. Sony
Keyword(s):  
Numerical Simulation ◽  
Vortex Flow ◽  
Cavity Size ◽  
Vortex Stability ◽  
Cold Flow ◽  
Air Jets ◽  
Passive Flow ◽  
Flow Through ◽  
Trapped Vortex ◽  
Driver Air

Abstract The Trapped Vortex Combustor (TVC) is a new design concept in which cavities are designed to trap a vortex flow structure established through the use of driver air jets located along the cavity walls. TVC offers many advantages when compared to conventional swirl-stabilised combustors. In the present work, numerical investigation of cold flow (non-reacting) through the two-cavity trapped vortex combustor is performed. The numerical simulation involves passive flow through the two-cavity TVC to obtain an optimum cavity size to trap stable vortices inside the second cavity and to observe the characteristics of the two cavity TVC. From the flow attributes, it is inferred that vortex stability is achieved by circulation and the vortex is trapped inside when a second afterbody is added.

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