1. Determine the simulation goal: First, you need to determine the simulation goal, that is, what results you want or what problems you want to solve. After the simulation target is determined, an appropriate numerical model can be selected for modeling.
2. Collecting data and determining parameters: Before establishing a numerical model, it is necessary to collect data related to the system or process and determine parameters. Data can be obtained from experiments or collected from existing literature, and the selection of parameters needs reasonable analysis and inference.
3. Establishment of numerical model: According to the actual situation, choose appropriate numerical model to establish, such as based on differential equation, partial differential equation, least square method, etc. When establishing a numerical model, the accuracy and reliability of the model must be guaranteed.
4. Numerical calculation: numerical calculation is carried out by computer, and the established numerical model is calculated. Attention should be paid to the rationality of parameter selection and the control of calculation accuracy, and the calculation results should be verified and compared to ensure the credibility of the calculation results.
5. Analyze and explain the results: analyze and explain the calculation results, find out the laws and characteristics of the calculation results, and reasonably explain and explain the results.
6. Application and optimization of results: Apply and optimize according to the results, such as optimizing system design, improving process flow and improving product performance.
In a word, to do a good job in numerical simulation, we need to carry out scientific and reasonable design and operation in establishing numerical model, calculating results and analyzing and interpreting results, so as to obtain valuable numerical simulation results.
Because four circles are tangent,
Therefore, the intersections of tangents O65438+OO3 กอ and O2O4กอ with tangents are E and F, respectively.