the main idea of simulation and it’s appropriateness in real world (when and where usable and not)

1. The main idea of simulation
and it’s appropriateness in
real world (when and where
usable and not)
By
Md. Fazle Rabbi
16CSE057

2. 4.2
What is simulation?
 A simulation is the imitation of the operation of real-world
process or system over time.
Simulation

3. 4.3
A system is defined as a groups of objects that are
joined together in some regular interaction toward
the accomplishment of some purpose.
 A system is often affected by changes occurring
outside the system: system environment.
• It is necessary to decide on the boundary
between the system and its environment
Definition of System

4. 4.4
Simulation involves
• Generation of an artificial history of a system +
Observation of that artificial history.
• Conclusion operating characteristics of the
real system
Simulation

5. 4.5
When Simulation Is the
Appropriate Tool

6. 4.6
study of internal interaction of a subsystem with complex
system
Informational (say false fire alarm) +
organizational (say removing supervisor) +
environmental changes ( say introducing lunch)
 find their effects
to gain knowledge about improvement of system
Finding important input parameters with changing
simulation inputs
with new design and policies before implementation
When Simulation Is the Appropriate Tool

7. 4.7
different capabilities for a machine can help
determine the requirement.
for training make learning possible without the
cost disruption
A plan can be visualized with animated
simulation
The modern system (factory, wafer fabrication
plant, service organization) is too complex that
its internal interaction can be treated only by
simulation
Continue……

8. 4.8
When Simulation Is
Not Appropriate

9. 4.9
When Simulation Is Not Appropriate
When the problem can be solved by common sense.
When the problem can be solved
analytically(logically).
If it is easier to perform direct experiments.
If cost exceed savings.
If resource or time are not available.
If system behavior is too complex.
• Like human behavior

10. 4.10
Advantages of simulation
1. New policies, operating procedures, information flows and
son on can be explored without disrupting ongoing
operation of the real system.
2. New hardware designs, physical layouts, transportation
systems and … can be tested without committing
resources for their acquisition.
3. Time can be compressed or expanded to allow for a
speed-up or slow-down of the phenomenon under
investigation.

11. 4.11
Advantages of simulation
4. Insight can be obtained about interaction of variables and
important variables to the performance.
5. Bottleneck analysis can be performed to discover where
work in process, the system is delayed.
6. A simulation study can help in understanding how the
system operates.
7. “What if” questions can be answered

12. 4.12
Disadvantages of simulation
1. Model building requires special training.
2. Simulation results can be difficult to interpret.
3. Simulation modelling and analysis can be time consuming
and expensive.
4. Simulation is used in sometime when an analytical solution
is possible or even preferable

13. 4.13
Manufacturing Applications
• Semiconductor Manufacturing
• Aircraft, Automobile
Construction Engineering and project management
Public System
• Military application
• Health Care
• Natural resources
Transportation modes and Traffic
Business Process Simulation
Areas of application

14. 4.14
Automated Material Handling System (AMHS)
Test beds for functional testing of control-system software
Risk analysis
Insurance, portfolio,..
Computer Simulation
CPU, Memory,…
Network simulation
Internet backbone, LAN (Switch/Router), Wireless, PSTN
(call canter),..
Areas of application

15. 4.15
Thank you