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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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