Fluent
Fluent User Services Center www.fluentusers.com
Introductory FLUENT Notes FLUENT v6.0 Jan 2002
Introduction to CFD Analysis
2-1
© Fluent Inc. 12/26/2001
Fluent User Services Center www.fluentusers.com
Introductory FLUENT Notes FLUENT v6.0 Jan 2002
What is CFD?
Computational Fluid Dynamics (CFD) is the science of predicting fluid flow, heat transfer, mass transfer, chemical reactions, and related phenomena by solving mathematical equations that represent physical laws, using a numerical process.
Conservation of mass, momentum, energy, species, ...
The result of CFD analyses is relevant engineering data: conceptual studies of new designs detailed product development troubleshooting redesign
CFD analysis complements testing and experimentation.
Reduces the total effort required in the laboratory.
2-2
© Fluent Inc. 12/26/2001
Fluent User Services Center www.fluentusers.com
Introductory FLUENT Notes FLUENT v6.0 Jan 2002
How does CFD work?
FLUENT solvers are based on the
finite volume method.
Domain is discretized into a control volume finite set of control volumes or cells. General conservation (transport) equation for mass, momentum, energy, etc.,
∂ ∫ ρφdV + ∫ ρφV ⋅ dA = ∫ Γ∇φ ⋅ dA + V Sφ dV ∫ ∂t V A A unsteady convection diffusion generation
Fluid region of pipe flow discretized into finite set of control volumes (mesh).
are discretized into algebraic equations. All equations are solved to render flow field.
2-3
Eqn. continuity x-mom. y-mom. energy
φ
1 u v h
© Fluent Inc. 12/26/2001
Fluent User Services Center www.fluentusers.com
Introductory FLUENT Notes FLUENT v6.0 Jan 2002
CFD Modeling Overview
Solver Pre-Processing Solid Modeler Mesh Generator Equations solved on mesh Transport Equations mass species mass fraction phasic volume fraction
Physical Models
Turbulence Combustion Radiation Multiphase Phase Change Moving Zones Moving Mesh
momentum energy
Solver Settings
Introductory FLUENT Notes FLUENT v6.0 Jan 2002
Introduction to CFD Analysis
2-1
© Fluent Inc. 12/26/2001
Fluent User Services Center www.fluentusers.com
Introductory FLUENT Notes FLUENT v6.0 Jan 2002
What is CFD?
Computational Fluid Dynamics (CFD) is the science of predicting fluid flow, heat transfer, mass transfer, chemical reactions, and related phenomena by solving mathematical equations that represent physical laws, using a numerical process.
Conservation of mass, momentum, energy, species, ...
The result of CFD analyses is relevant engineering data: conceptual studies of new designs detailed product development troubleshooting redesign
CFD analysis complements testing and experimentation.
Reduces the total effort required in the laboratory.
2-2
© Fluent Inc. 12/26/2001
Fluent User Services Center www.fluentusers.com
Introductory FLUENT Notes FLUENT v6.0 Jan 2002
How does CFD work?
FLUENT solvers are based on the
finite volume method.
Domain is discretized into a control volume finite set of control volumes or cells. General conservation (transport) equation for mass, momentum, energy, etc.,
∂ ∫ ρφdV + ∫ ρφV ⋅ dA = ∫ Γ∇φ ⋅ dA + V Sφ dV ∫ ∂t V A A unsteady convection diffusion generation
Fluid region of pipe flow discretized into finite set of control volumes (mesh).
are discretized into algebraic equations. All equations are solved to render flow field.
2-3
Eqn. continuity x-mom. y-mom. energy
φ
1 u v h
© Fluent Inc. 12/26/2001
Fluent User Services Center www.fluentusers.com
Introductory FLUENT Notes FLUENT v6.0 Jan 2002
CFD Modeling Overview
Solver Pre-Processing Solid Modeler Mesh Generator Equations solved on mesh Transport Equations mass species mass fraction phasic volume fraction
Physical Models
Turbulence Combustion Radiation Multiphase Phase Change Moving Zones Moving Mesh
momentum energy
Solver Settings