Page 8 - DCAP601_SIMULATION_AND_MODELING

Simulation and Modelling

Notes squeeze up your processes to fulfill those demands. Out-deliver your competition by means of
Simul8 to plan, model, authenticate, and converse better methods of getting the job done.
This unit discovers the use of modelling and simulation as a problem resolving tool.
We commence this discussion within the structure of a modelling and simulation project. This
project framework cuddles two key ideas; first there is the notion of a ‘system context’; that is,
there is a system that has been recognized for examination, and second, there is a difficulty
relating to the identified system that requires to be solved.
The defining feature of the modelling and simulation approach is that it is founded on a computer-
based experimental investigation that utilises an appropriate model for the SUI. The model is a
representation or abstraction of the system. The use of models (in particular, mathematical
models) as a basis for analysis and reasoning is well established in such disciplines as engineering
and science. It is the emergence and widespread availability of computing power that has made
possible the new dimension of experimentation with complex models and hence, the emergence
of the modelling and simulation discipline.

1.1 Modelling and Simulation Process

An outline of the essential steps involved in carrying out a modelling and simulation study is
provided in the discussion that follows. Although the initial steps can be effectively presented
using various notions that have been previously introduced, there are several aspects of the
latter stages that require extensive elaboration. This is provided in the discussions that follow.
An overview of the process is provided in Figure 1.1.
The overview of Figure 1.1 does not include a preliminary phase during which solution
alternatives for the problem are explored and a decision is made to adopt a modelling and
simulation approach. We note that the option of also carrying out other complementary
approaches is entirely reasonable and is often prudent for some portions of the problem. Although
this preliminary phase is not explicitly represented in Figure 1.1 its existence and importance
must nevertheless be recognised.
It should be emphasised that a modelling and simulation project of even modest size is often
carried out by a team of professionals where each member of the team typically contributes
some special expertise. There is, therefore, a need for communication among team members.
Some facets of the discussion have their basis in this communication requirement.

Did u know? Meaning of Modelling and Simulation

Although the word ‘modelling’ has a meaning that is reasonably confined in its general
usage, the same cannot be said for the word ‘simulation’. Nevertheless, the phrase
‘modelling and simulation’ does have a generally accepted meaning and implies two
distinct activities. The modelling activity creates an object (i.e., a model) that is subsequently
used as a vehicle for experimentation. This experimentation with the model is the simulation
activity.

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