What Are the Different Types of Computer Simulation Programs?

Simulation (Simulation), that is, the use of project models to translate uncertainties specific to a specific level into their impact on objectives, which is expressed at the overall level of the project simulation project. Project simulation uses computer models and a specific level of risk estimation. Monte Carlo method is generally used for simulation.

Use the model to reproduce the essential process that occurs in the actual system, and

Early 20th Century

1. Physical property database. Including basic physical property data and physical property calculation required for module operation.

2. Unit operation model library. It includes the modules required for simulation, and each module is composed of mathematical models including materials balance, energy balance, phase balance, and reaction rate.

3. Model solving algorithm library. Including a variety of numerical solution algorithms, linear and non-linear equations, parameter fitting, optimization algorithms and so on.

4. Simulation environment and its input and output. The simulation environment is the management mechanism for the simulation operation of the model, which controls the degree of simulation ^[1]

Simulations can be classified according to different principles:

According to the type of model used (physical model, mathematical model, physical-mathematical model), it is divided into physical simulation, computer simulation (mathematical simulation), and semi-physical simulation;

By type of computer used (

A simulation model is an analog of an object to be simulated or its structural form. it can be

Observable through experiments

Mainly refers to emulation hardware and

It mainly refers to the methods of establishing simulation models and simulation experiments, which can be divided into two categories:

In terms of emulation hardware, adopted since the 1960s

With the rapid development of military and science and technology, simulation has become an indispensable means for the development of various complex systems. Especially in the aerospace field, simulation technology has become an indispensable means for the development of aircraft and satellite vehicles. Can achieve very high economic benefits.

In the whole process of development, identification and finalization, advanced simulation technology must be fully applied. Otherwise, the development of any new and advanced aircraft and vehicles will be impossible.

The contest between the Patriot missiles and the Scud missiles during the Gulf War also reflected the participation of simulations. Modern strategic missiles have great offensive power and long range. What's more terrible is that they are often equipped with multiple real, fake warheads to confuse the enemy so that they can successfully break through the enemy's powerful air defense net. Generally speaking, the radar warning time of the most advanced anti-missile system is only a few minutes. In order to prevent the enemy s attack from succeeding, he must respond quickly and correctly in these few minutes, identify the true and false warheads, calculate the flight trajectory, and mobilize his forces to intercept, so as to ensure that the enemy bombs are caught before reaching the target. Destroy it. To do all this, we have to give play to the ability of ultra-large-scale scientific calculations, otherwise our side can only be in a passive position. During the Gulf War, "Patriot" missiles battled "Scud" missiles, forming a spectacle in the history of war. The level of the "Scud" missile is also not ordinary, its flying speed can reach 2638 meters per second.