Unsteady flow simulation of compressible turbulent flow in dual-bell nozzle with movement of extendible section from its initial to working position

2021 ◽  
Author(s):  
Vladislav Emelyanov ◽  
Konstantin Volkov ◽  
Mikhail Yakovchuk
Keyword(s):  
Unsteady Flow ◽  
Turbulent Flow ◽  
Flow Simulation ◽  
Compressible Turbulent Flow ◽  
Dual Bell ◽  
Unsteady Flow Simulation

Unsteady flow simulation using unstructured meshes

2000 ◽  
Vol 189 (4) ◽  
pp. 1247-1275 ◽  
Author(s):  
O. Hassan ◽  
E.J. Probert ◽  
K. Morgan ◽  
N.P. Weatherill
Keyword(s):  
Unsteady Flow ◽  
Flow Simulation ◽  
Unstructured Meshes ◽  
Unsteady Flow Simulation

3D Quasi-Unsteady Flow Simulation in a Centrifugal Pump: Comparison With the Experimental Results

2004 ◽  
Author(s):  
Miguel Asuaje ◽  
Farid Bakir ◽  
Andres Tremante ◽  
Ricardo Noguera ◽  
Robert Rey
Keyword(s):  
Unsteady Flow ◽  
Centrifugal Pump ◽  
Cfd Simulation ◽  
Pressure Fluctuations ◽  
Pressure Sensors ◽  
Flow Simulation ◽  
Turbulence Models ◽  
Numerical Predictions ◽  
Radial Thrust ◽  
Unsteady Flow Simulation

A 3D-CFD simulation of the impeller and volute casing of a centrifugal pump has been performed using commercial codes CFX 5.5 and CFX-TASCflow 2.12. The pump has an specific speed of 32 (metric units) and an outside impeller diameter of 400 mm. First, a 3D-flow simulation for the isolated impeller with a structured grid is presented. A sensitivity analysis regarding grid quality and turbulence models were also performed. A 3D quasi-unsteady flow simulation of the impeller-volute assembly is presented, as well. This flow simulation was carried out for several impeller blades and volute tongue relative positions. As a result, the radial thrust on the pump shaft were calculated for different flow rates. Experimental test were carried out in order to compare theoretical pressure fluctuations with the experimental ones measured by various unsteady pressure sensors placed on the impeller shroud and volute. The qualitative and quantitative results ratify numerical predictions.

519 Study on Unsteady Flow Simulation in Nasal Cavity

2005 ◽  
Vol 2004.17 (0) ◽  
pp. 213-214
Author(s):  
Toshio NAKAYAMA ◽  
Shigeru ISHIKAWA ◽  
Teruo MATSUZAWA
Keyword(s):  
Unsteady Flow ◽  
Nasal Cavity ◽  
Flow Simulation ◽  
Unsteady Flow Simulation
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