DIMPHO DINEO KGOSIEMANG 14001700 IntroductionModelling is a way of generating a virtual representation ofa system in a simplified manner to better understand the real life system thatexists in the real world using software and hardware. A model is therefore thecomputer program that has been designed and developed to emulate the way a systemworks in a real life situation. Using knowledge from the past observations,these real life occurrences can be used as data to create the system in whichthe model is tested. This data can be in the form of mathematical formulas andcalculations giving the ability to predict what would actually happen.
A simulation allows us to see real life interactions bymanipulating a model such that it operates in time and space in a virtualsystem. This representation of a model can be simulated in a wide range ofconditions to get a better understanding of how model will function in the realworld. Modelling and simulation therefore allows us to view andtest all designs and ideas using software and hardware and gives a platform fordesigners to make improvements to their designs.
The following is a brief historyof the module and a look into the impact it has had in the way ideas arebrought into the real world.History andbackground of modelling and simulationModelling has evolved through the years from relying only onphysical miniature models, process models and mathematical models to being ableto make computer models and then simulate them to see how they would functionin the real world. Simulations too have evolved from live simulations such astraining drills to simulations that can be done on a computer.
This evolutionis the result of the increasing number of software that is made available tothe public use. Importance ofmodelling and simulationModelling and simulation can be used for the followingpurposes:· Investigation: a system can be analyzed indetail using modeling and simulations. Simulations can be paused and stopped atany moment in time to investigate a model in a virtual environment and its behavior.
A model can also be zoomed into to explore its many components and gain a moreextensive understanding of it and its many parts and how they functions before itis built.· Training: people can be trained by using modelsand simulations to mimic all the events that they could encounter in real lifesituations. By using models, companies are able to give their trainees aplatform on which to make mistakes before they begin the real work.
This allowsall personnel to learn the necessary skills and know how to deal with dangeroussituations when they do occur when they are on the job. In this way thesemodels and simulations prevent a great deal of accidents and save a lot ofmoney usually spent on replacing or fixing assets damaged by people whiletraining.· Testing: Models and simulations are used to testideas and designs without having to build them in real life. Building theactual design would require more money than simulating it on the computer andtherefore a lot if money is saved by taking this design approach when testingout new ideas. One is able to know if the design would function if built andalso recognize all the errors that could have been made during calculations andrectify them.· Predictions: models and simulations can be usedto show what could happen to a system after a certain period of time. If anaccurate model is build, the simulation time can be sped up to depict the behaviorof the design in the future. This would show the durability and expose theweaknesses of the design without endangering the lives of people and wastingmoney and resources by building materials that would not last for a long periodof time.
Applications ofmodelling and simulationThere are many ways in which modelling and simulations havebeen used to gain a better understanding of our surroundings. These includedesigning safer cars, weather forecasting, infrastructure design, pilottraining and running a business. When designing cars, safety is always an issue of concern. Beforecomputer designs, cars had to be built and crashed multiple times to assess howsafe they were before they were introduced to the market. Modelling andsimulation has made it cheaper and less time consuming by having the safety ofvehicles be tested through simulations.
Models can be crashed many times andthe damage to the car and injuries to the passengers evaluated and improvementsmade without having to make these cars in real life.When the planet is modelled and the previous weatherconditions are programmed into the computer, a simulation can be ran and fastforwarded to get an estimate of future weather conditions.For infrastructure design, a model is used to test how thedesign will respond to the natural weather conditions. For example, a bridgecan be analyzed to see if it would collapse in the case of storms and if itwould last for a long period of time considering the amount of traffic. The sameis done when constructing tall building to ensure that money is wasted buildingunsafe structures that will need to be replaced.In pilot training, the trainees go through a number offlight simulations and as a result they make mistakes without endangering thelives of passengers.
When they start their real flights, they are equipped withenough knowledge to make good decisions.A model of a business can be used to predict the amount ofprofit they will make in the future of they make certain decisions. As such abusiness model helps the managers decide how to run the business on an everydaybasis.