Fluid Mechanics 101

YouTube Lecture Slides

The aim of Fluid Mechanics 101 is to provide a useful CFD resource for everyone, all around the world. All of the lectures are free to watch on YouTube, so the information can be accessed by anyone, for free. However, if you would like the convinience of the PDF slides (to avoid scrolling through the videos themselves), you can buy them here. The sales help cover the costs of the channel, and are greatly appreciated.

The slides are grouped into sets of 10, in the same order that they were released on YouTube. Please consult the List of Lectures below if you are looking for a particular lecture.

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List of Lectures

What are Wall Functions and How do they work?
How to solve incompressible Navier-Stokes (SIMPLE Algorithm)
What are Thermal (Temperature) Wall Functions?
How do Aerofoils generate Lift?
How do Wind Turbine Rotors Really Work?
When should I use the Boussinesq Approximation in Bouyancy Driven (Natural Convection) Flows?
What form of the Energy Equation should I use for both Solids and Fluid Flow?
What is the difference between Upwind, Linear Upwind and Central Differencing?
When and Why do I need Operating Pressure, Temperature and Density?
How does the Surface-to-Surface (S2S) Radiation Model Work?

What wall functions do I need for epsilon?
What wall functions do I need for turbulent kinetic energy?
How are wall functions modified for roughness?
The k-ω SST turbulence model
The finite volume method in CFD
What is the difference between y⁺ and y^*?
How fine should my CFD mesh be?
Mesh Non-Orthogonality
Eulerian multi-phase modelling
The k-ε turbulence model

y+ for Laminar Flow
Non-Newtonian Flows in CFD
The Transition SST Model
Shell Conduction in CFD
Porous Zones in CFD
Green Gauss Cell and Node Based Gradients
Least Squares Gradient
Green-Gauss Node Based Gradient
The PISO Algorithm
Cell Volume Calculation

Non-Orthogonal Correctors 2: The Over-Relaxed Approach
The Spalart-Allmaras Turbulence Model
The Discrete Ordinates (DO) Radiation Model
Lagrangian Particle Tracking
Multiple Reference Frames (MRF)
Pressure Inlets in CFD
The k - ω Turbulence Model
The Courant Number
Large Eddy Simulation (1): Introduction
Enhanced Wall Functions in ANSYS Fluent

Large Eddy Simulation (2): Turbulent Kinetic Energy
Heat Transfer Coefficient in Fluent, OpenFOAM and CFX
Large Eddy Simulation (3): Sub-Grid Modelling
Eddy Viscosity Turbulence Models
The Smagorinsky Turbulence Model
The Smagorinsky Turbulence Model (Part 2)
Convection Boundary Condition
Inflation Layers / Prism Layers in CFD
Rhie & Chow Interpolation (Part 1)
Rhie & Chow Interpolation (Part 2): Staggered Grids

Rhie & Chow Interpolation (Part 3)
Residuals in CFD (Part 1)
Residuals in CFD (Part 2)
Residuals in CFD (Part 3)
Residuals in CFD (Part 4)
Relaxation in CFD (Part 1)
Relaxation in CFD (Part 2)
Relaxation in CFD (Part 3)
Pseudo-Transients for Steady State CFD (Part 1)
Pseudo-Transients for Steady State CFD (Part 2)

Pseudo-Transients for Steady State CFD (Part 3)
Aspect Ratio Warnings
Gauss-Seidel Algorithm
Turbulence Intensity
Multi-Grid for CFD (Part 1)
Multi-Grid for CFD (Part 2)
Conjugate Gradient for CFD (Part 1)
Conjugate Gradient for CFD (Part 2)
The Material Derivative
Pyramids, Wedges and Stair-Stepping

Hexcore Meshes
Pressure-based Coupled Solver (Part 1)
Pressure-based Coupled Solver (Part 2)
Numerical/Artifical Diffusion
Inflation Layers and Corners
H/A in OpenFOAM (Part 1)
H/A in OpenFOAM (Part 2)
Derivation of the Transport Equation for k (Part 1)
Derivation of the Transport Equation for k (Part 2)
simpleGrading for blockMesh (pre-release)

Lectures

Lectures 1 - 10

Lectures 11 - 20

Lectures 21 - 30

Lectures 31 - 40

Lectures 41 - 50

Lectures 51 - 60

Lectures 61 - 70

Lectures 71 - 80

YouTube Lecture Slides

List of Lectures