MECH4620
Computational Fluid Dynamics
Lecture 7
Turbulence: Applications and Models
Turbulence models
Elaboration of differences in two-equations turbulence
models such as RNG k- model, reliazable k- model,
SST model and second-order closure model such as
THE UNIVERSITY OF NEW SOUTH WALES
School of Mechanical and Manufacturing Engineering
ASSIGNMENT 1
COMPUTATIONAL FLUID DYNAMICS (CFD) (MECH 4620)
The aim of this assignment is to solve a problem of your choice as part of this course using ANSYS
commercial
Author B. Author
Title
MECH4620
TITLE SHOULD BE CONCISE AND 18pt ARIAL
(Mid-Semester Project and Mesh Report)
AUTHOR B. AUTHOR, STUDENT NUMBER
School of Something Something,
The University of New South Wales,
Kensington, NSW 2052, Australia
Nomenclature
A
Computational
Fluid Dynamics
Lecture 4
Conservation Laws
CONSERVATION OF MASS
Consider a specific mass of fluid whose volume is arbitrarily chosen! If the
mass of fluid is followed, then the mass remains constant.
x3
V
control
mass
x2
x1
Figure 1. Co-ordi
THE UNIVERSITY OF NEW SOUTH WALES
School of Mechanical and Manufacturing Engineering
ASSIGNMENT: PLATE TYPE MOLYBDENUM TARGET
COMPUTATIONAL FLUID MECHANICS (MECH 4620)
Problem Definition
Subject to regulatory licensing requirement, safety concerns and int
Computational
Fluid Dynamics
Basic Computational Methods:
Part 2
VON NEUMANN STABILITY
ANALYSIS
The collection of FDAs for all mesh points can be written as
(T ) = [A](T ) + (B )
n +1
n
[]
where ( ) denotes a column vector,
amplification matrix.
(43)
deno
THE UNIVERSITY OF NEW SOUTH WALES
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING
MECH4620 COMPUTATIONAL FLUID DYNAMICS
Tutorial Problems (T3)
(Due 4 pm Friday, Week 9)
1. The one-dimensional heat transfer equation can be written as:
T
2T
2
t
x
(1)
w
Computational
Fluid Dynamics
Lecture 3
The kinematic
properties of fluids
1. VECTORS AND TENSORS
1.1 VECTOR ANALYSIS
We shall briefly review vector analysis and the calculus of dyadics and
cartesian tensors before turning our attention to Fluid Mechanics
MECH4620
Computational Fluid Dynamics
Lecture 8
Basic Computational Methods:
discretisation
Partial differential equations in CFD
General form
( ) + ( u j ) = + S
x j
x j x j
t
source term
time derivative
advection
diffusion
Process of obtaining th
MECH4620
Computational Fluid Dynamics
Lecture 6
Turbulence: Basics and Introduction
Turbulence
What is turbulence?
What are the main features of turbulence?
How can we identify or characterize turbulence?
How can we model turbulence within the framework o
MECH4620
Computational Fluid Dynamics
Lecture 5
Navier-Stokes Equations and
Boundary Conditions
Governing equations for CFD
CFD is fundamentally based on the governing equations
of fluid dynamics
The equation represent mathematical statements of the
conse
MECH4620
Computational Fluid Dynamics
Lecture 4
Conservation Laws
and Similarity
Governing equations for CFD
CFD is fundamentally based on the governing equations
of fluid dynamics
The equations represent mathematical statements of the
conservation laws o
MECH4620
Computational Fluid Dynamics
Lecture 3
The kinematic properties of fluids
Vectors and tensors
In general system of coordinates the vector , position
vector and unit vectors , 1, 2 and 3 are defined as
The position vector r = x1 1 + x2 2 + x3 3
x3
Computational Fluid Dynamics
Validation and Verification
INTRODUCTION
How do we know the solution is
right? Whats right?
"The accuracy level required of
simulations depends on the
purposes for which the simulations
are to be used". (AIAA GUIDE)
CFD is now