AdvancedTraining_1_Introduction.pdf
AdvancedTraining_2_Governing_Equations.pdf
AdvancedTraining_3_Turbulence_Modelling.pdf
AdvancedTraining_4_Boundary_Layers_and_Heat.pdf
AdvancedTraining_5_Validation_Cases.pdf
AdvancedTraining_6_Numerical_Solution.pdf

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AdvancedTraining_1_Introduction.pdf

FLOTHERM Advanced Training Course

Computational Fluid Dynamics
-Computational Fluid Dynamics (CFD)
-Describe flow of fluid and heat transfer within system of interest
-Get results in terms of temperature,velocity etc.

CFD
-Develop equations
-Transform them
-Solve them

Governing Equations
-Describe mathematically the physics of flow and heat transfer
-Using fundamental empirical laws of matter
-Set of governing equations for a point in space

-Conservation of Mass Continuity equation
-Newton’s Second Law Navier-Stokes equations
-First Law of Thermodynamics Energy equation

General form of conservation equations:
?φ/?t + φout - φin = Sφ
-Differential equation, must be transformed before it can be solved

-Differential equations must be transformed into a form that can be
solved
-Process is called discretization
-Discretized equations can be solved numerically by computer

-The algebraic equations formed by discretization must be solved
-Solution scheme must be chosen
-Within the scheme, a technique for solving equations is used
-Scheme is iterative as error in the algebraic equations is minimised

-Must supply boundary conditions
-Initial conditions
-Termination criteria

-Solution schemes have controls to improve stability and convergence time
-False time step
-Linear relaxation

-After solution, we have full description of flow field and temperature within our domain of interest

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