Numerical simulation of hypersonic inlet flows with equilibrium or finite rate chemistry

The paper presents the re-entrant jet analysis of cavitating turbulent flow on a hydrofoil. Analysis was performed by OpenFOAM code. A mixture assumption and a finite rate mass transfer model were introduced. The finite volume method is used to solve the governing equations of the mixture model and the pressure-velocity coupling is handled via a Pressure Implicit with Splitting of Operators (PISO) procedure. The result of numerical simulation clearly explained the mechanism of re-entrant jet and quasi-periodic law of cavitating flow on a hydrofoil.

Download Full-text

Numerical Simulation of Blade Channel Vortex in a Low Head Francis Turbine

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.291-294.1958 ◽

2013 ◽

Vol 291-294 ◽

pp. 1958-1962 ◽

Cited By ~ 2

Author(s):

Hong Ming Zhang ◽

Li Xiang Zhang

Keyword(s):

Numerical Simulation ◽

Francis Turbine ◽

Transfer Model ◽

Mass Transfer Model ◽

Governing Equations ◽

Cavitation Model ◽

Finite Rate ◽

Low Head ◽

Simulation Results ◽

Volume Method

The paper presents numerical simulation of blade channel vortex in a low head Francis turbine using OpenFoam code. A mixture assumption and a finite rate mass transfer model were introduced to analyze blade channel vortex. The finite volume method is used to solve the governing equations of the mixture model and the pressure-velocity coupling is handled via a Pressure Implicit with Splitting of Operators (PISO) procedure. Simulation results have shown that using cavitation model to analyze blade channel vortex is very effective.

Download Full-text

608 Numerical Simulation of Turbulent Non-Premixed Diffusion Flame Using PDF/Moment Combined Method with Finite-Rate Chemistry

The Proceedings of Conference of Tokai Branch ◽

10.1299/jsmetokai.2005.54.201 ◽

2005 ◽

Vol 2005.54 (0) ◽

pp. 201-202

Author(s):

Kunihiko YAMAMURO ◽

Susumu NODA

Keyword(s):

Numerical Simulation ◽

Diffusion Flame ◽

Combined Method ◽

Finite Rate

Download Full-text

Numerical simulation of high pressure burner with partially premixed flame

CT&F - Ciencia Tecnología y Futuro ◽

10.29047/01225383.231 ◽

2011 ◽

Vol 4 (4) ◽

pp. 89-103

Author(s):

Juan-Camilo Lezcano-Benítez ◽

Daniel Correa-Restrepo ◽

Andrés-Adolfo Amell-Arrieta ◽

Francisco-Javier Cadavid-Sierra

Keyword(s):

Numerical Simulation ◽

High Pressure ◽

Reaction Mechanism ◽

Premixed Flame ◽

3D Simulation ◽

Finite Rate ◽

Dissipation Model ◽

Partially Premixed Flame ◽

Secondary Air ◽

2D And 3D

In this paper we present the results of a 2D‑axisymmetric parametric study which simulates an atmospheric premixed burner with flame at high pressure, in which methane is burned. A total of 9 simulations are performed with different regulators openings of primary and secondary air. Also, it provides a 3D simulation in which entry conditions are the profiles obtained in a 2D‑axisymmetric simulation, with the intention to note that differences are obtained between 2D and 3D simulation. The simulations are performed using the standard k-ε model for turbulence, P1 model for radiation and the Finite Rate/Eddy Dissipation model with a simplified 2-step reaction mechanism for combustion. We conclude that when the secondary air regulator is closed, combustion is incomplete. Also, the results of 2D‑axisymmetric are a good approximation in regards to 3D results.

Download Full-text