The military-industrial scientific research system of the academic master.

Tang Lintian, who was almost elbowed in the face by the boy sitting next to him, showed a somewhat embarrassed smile.

He is a good-natured person, and he is not angry at all, but he feels a little embarrassed.

Fortunately, after looking around, I found that everyone was either taking notes or looking at the blackboard, and no one else noticed what just happened.

Tang Lintian, who breathed a sigh of relief, fell back into thinking——

Although his attempt to strike up a conversation was unsuccessful, his initial goal was achieved.

Judging from the other party's reaction just now, the harvest is obviously not small.

This suddenly gave Tang Lintian some ideas.

He planned to wait until the group meeting was over and go to Du Yishan to ask about the student's situation.

perhaps……

Can you consider directly hiring someone to stay in school after graduation?

To be able to join Du Yishan's research group, his scientific research ability is definitely unparalleled, and his lecture level is still so high, it is simply a treasure.

If by then we can cultivate a large number of the aviation talents that the country is most in need of...

Tang Lintian's mind has gradually begun to let himself go.

"But if you are a doctor, just giving him the title of lecturer may not be very attractive..."

Thinking of this, his excitement quickly turned to worry.

At this time, there is no institutional policy for directly appointing associate professors after doctoral degrees.

Let alone the dean, the principal of Jinghang cannot make this decision alone.

You must have worked as a lecturer for at least two years before you can start applying for review.

And because of limited funds, the salary of university faculty and staff is also relatively low.

So overall, the appeal is actually quite limited.

Therefore, Tang Lintian has already begun to think about what other attractive conditions the college can offer.

"Prioritize housing allocation?"

"Resolve the household registration in Beijing?"

"..."

After thinking for a long time, Tang Lintian still couldn't figure out a safe way.

For a doctor with such a strong ability, if he goes to a foreign company, it may not be a problem to earn hundreds of thousands or even two or three hundred thousand a year.

During the two years that I wasted working as a lecturer, I had almost earned my house and household registration in Beijing.

"Why don't you try the honey trap?"

Tang Lintian touched his chin, his thoughts becoming more and more inconsistent.

Just when he was already thinking about whether there was any young female teacher in the college who could tie him up, Chang Haonan finally sat back in front of the computer and officially started to demonstrate the computational fluid dynamics simulation example.

Compared with the theoretical explanation just now, everyone is more interested in this part.

Naturally, this also includes Tang Lintian.

So he had to put his thoughts aside for the time being, return his attention to the curtain in front, and at the same time turn his notebook to a new page, ready to see what the other party's skills were in the field of practical applications.

“The process of computational fluid dynamics simulation can be roughly divided into the following six stages.”

Chang Haonan said, opening the 3D modeling software on the computer, and continued to preach while it was loading:

"Conduct three-dimensional modeling of the research object, establish the simulation calculation domain, mesh the calculation domain, determine the calculation model, solve the calculation and post-process the simulation results."

If a real simulation project starts from 3D modeling, it will take at least a few days, so it is naturally impossible for Chang Haonan to really go through the entire process.

Long before the group meeting started, he had already thought about the detailed distribution of this part of the content.

"This computational simulation process is covered in many relevant guide books. Because today's time is limited, I will focus on some details and key points in the simulation. These are some of my personal experiences. They should not be found in textbooks. of these contents.”

Chang Haonan said this casually, but it made some teachers below who usually just read textbooks in class feel a little ashamed.

"After establishing the 3D model, you must remember to make necessary corrections to the model, otherwise problems may occur during the meshing process. For example, the model on the screen now is the nose part of an aircraft. We need to correct it. A small section of the radome head was solidified to make it suitable for volume meshing..."

"According to my experience, the quality of the three-dimensional volume mesh must be at least 0.25 to enable more accurate simulations. Therefore, for complex models, do not directly generate the volume mesh. My personal habit is to set the line mesh first, and then Set up the surface mesh to generate a surface shell mesh, and then use the shell mesh to generate a volume mesh..."

Because Chang Haonan directly used the engineering files from his previous work on the J-7 improved model, there were very few parts that required him to actually get started with the operation. However, this did not affect the excitement of the process, but instead freed up his energy to focus on the operation steps. The more difficult and error-prone areas will be explained in detail, and the demonstration will be focused on them.

Most of these contents have nothing to do with the system, but a lot of experience that Chang Haonan himself summed up during more than 20 years of stumbling in his previous life.

For the vast majority of beginners who are listening to the lecture below, it does not make much sense to repeat to them the "optimal problem-solving process" provided by the system at that time.

On the contrary, the experiences and lessons of these predecessors are what they need most.

Anyone who has done research or written code knows that the most desperate and painful time is when you clearly know there is a problem, but you have no idea where the problem is.

Therefore, these "wrong question collections" shared by Chang Haonan soon aroused a lot of resonance among the audience.

Some people even realized their previous mistakes on the spot.

Tang Lintian, who was taking notes, was even more frightened. Many of the simulation techniques and key points that Chang Haonan just talked about were things he had never even thought about.

Some of them have never been encountered before, and some of them have been encountered before, but they didn't even know that they did something wrong before.

In numerical simulation, it is very likely that errors will collide and lead to correct conclusions, but these concealed errors will not really disappear. Sooner or later, they will burst out in other projects.

He simply couldn't imagine how this young man who was clearly only in his twenties could have such rich experience.

This further strengthened Tang Lintian's determination to keep Chang Haonan in school.

"After completing the calculation, if you want to further determine the accuracy and reliability of the calculation results, you can also conduct an independent verification of the impact of the number of grids on the accuracy of the calculation results. However, this is not a necessary part. In addition, now It’s getting late, so I want to come here first today. I hope what I just reported can bring some inspiration to everyone, thank you everyone!”

As Chang Haonan's final words of gratitude fell, the entire classroom suddenly burst into endless applause.