"Sounds like ...... Is it really possible? ”

"If it can be done, then our plane will be amazing......"

“……”

After the previous explanation, Liang Shaoxiu and the others also abandoned the attitude of being skeptical just now.

Of course, just because you understand it doesn't mean you know how to do it.

It's like brushing up on questions in middle school, and it's one thing to be able to understand the answers, but it's another thing to be able to make it yourself next time you encounter it.

Most people who come from ordinary engineering backgrounds do not have a high level of proficiency in mathematics and physical theory.

Moreover, from the perspective of objective reality, even if there are people who can truly integrate scientific theory and engineering practice together and make innovations and breakthroughs, it is difficult to retain the conditions of Nanzheng.

It's not that the geography and climatic environment of Nanzheng are bad, the key is the scientific research conditions.

Therefore, Chang Haonan still needs to get the previous model algorithm part, and then the engineers of Factory 182 will complete the follow-up testing, analysis and parameter adjustment process with a large workload.

"That's it, Master Liang."

After explaining his basic ideas, Chang Haonan took two steps forward and put the pencil back on the table:

"You can help me find a few people who are more proficient in computer graphics, not too many, just four or five. Let's first electronically design our main wing and horizontal tail, so that we can do numerical simulation of related problems later. ”

However, Liang Shaoxiu, who heard this question, looked embarrassed:

"This ...... I'll try my best, even if I count myself, I'm afraid there are not many people who are proficient. ”

“……”

Chang Haonan was dumbfounded for a while, but he could understand it when he thought about it.

Proficiency in the use of a computer and proficiency in the use of computer graphics are still two different concepts after all.

As big as the 601 Institute, the digital design team only got together twenty or thirty people when it was first established, and as Lin Shikuan couldn't make achievements later, this number even dropped a little bit to seven when Chang Haonan and Yao Mengna used to be.

The entire computing center is deserted.

It wasn't until digital design and manufacturing proved to be of great value in the J-8C improvement process that some people were sent back to Lin Shikuan's side, and so far they have only returned to the original level.

Many older engineers may be able to learn how to use a computer, but it is difficult to make a fundamental change in their engineering thinking.

The talent gap in the 182 factory is serious, and today's main force is either too old or too young, and there will definitely be some difficulties in this era of technological change.

"Then it's okay to be a little less skilled, just to learn some experience, the aircraft design industry, will definitely take this road in the future."

"But the candidate must at least ensure that he is careful and meticulous, and this kind of basic work must not be wrong, otherwise it may have to be completely overturned in the future."

……

Although the technical foundation of Factory 182 is relatively weak, it is still worthy of affirmation in terms of efficiency.

Within a few days, according to Chang Haonan's request, Professor Lin Guofan, who had a long-term cooperation with them, was invited from Jincheng University.

Even if an expert from outside the aviation system has a long-term cooperation and is authorized to work with military and classified projects, it is impossible for him to casually enter the data room, which is about to be used as an office.

So Chang Haonan met Lin Guofan in a conference room with relevant information.

"Hello, Professor Lin."

The two men who met for the first time shook hands.

"I don't know if this is ......"

Lin Guofan was also sitting next to another woman who looked less than forty years old.

"I am Guofan's lover, Zhu Lan, and I am also a professor at Jincheng University, who studies surface physics, and I heard him say that your topic this time is related to my research direction, so I also came here with the above application."

"Thank you, then."

The three of them quickly ended the brief greetings, and then Chang Haonan put the information on the table and spent about twenty minutes roughly introducing his thoughts on the prediction of the ice accumulation on the wings.

The two professors glanced at each other, and finally it was Lin Guofan who spoke first:

"Comrade Xiao Chang, don't mind if I call it that."

Chang Haonan shook his head lightly and signaled that it didn't matter.

"In the case of knowing the properties and characteristics of supercooled droplets or ice crystals and the parameters of aircraft wings, it is indeed theoretically reasonable to calculate the phase transition by kinetic and thermodynamic means, but I am afraid that it will face some difficulties in operation."

Compared with Liang Shaoxiu and others, Lin Guofan and Zhu Lan are much more proficient in this area, so they can immediately take into account many details that laymen don't know.

"When an aircraft encounters cold and wet air during high-speed flight, it is first and foremost a matter of droplets hitting a rough solid surface."

"Although it is true that the VOF or LSM method can be used to calculate the surface of the wing after Euler mesh or Cartesian meshing, for the large deformation problem of high-speed impact, the numerical simulation system cannot guarantee that a suitable interpolation function can be constructed on all meshes, and even if this step is forcibly completed, it is difficult to ensure that the deformed mesh is not singular when the mesh is deformed."

"Not to mention that to find the numerical solution of the N-S equation in this case, the amount of computation is quite exaggerated, and even with supercomputing, it may take several years to complete."

After Lin Guofan finished speaking, Zhu Lan next to her helped her husband a little:

Or does Comrade Xiao Chang have any new ideas on the problem of liquid-solid surface interaction? In that case, we can talk about the content of the research. ”

The atmosphere suddenly fell into an eerie silence for a moment.

Chang Haonan, who was sitting diagonally opposite the couple, did not react immediately.

"Comrade Xiao Chang?"

Zhu Lan asked softly again.

Chang Haonan's stunned state only lasted for an extremely short moment before he recovered, making Zhu Lan even wonder if he had just read it wrong.

"Oh, Professor Zhu is right, I do have a new way of thinking about calculating the surface interaction of liquid-solid high-velocity impacts."

"Huh?"

This time it was Lin Guofan and Zhu Lan's turn to be confused.

Especially the latter, what she said just now was just to make her husband's rebuttal seem less blunt, and she didn't really think that Chang Haonan would have any in-depth research on surface physics.

As a result, people really have it?

Thinking of this, Zhu Lan couldn't help but pay a little attention to the young man in front of her, and her expression gradually became serious.

Actually, Chang Haonan really didn't.

He really almost overturned just now-

Although he has accumulated 260 scientific research points through several major projects completed in a row after being reborn, people are always greedy.

In addition, Chang Haonan has indeed completed a lot of projects without relying on the system in the past few months, so he began to think about whether he could pick up the wool of the system.

After forming a closed-loop idea, if you want the system to give a more specific research method, it will cost scientific research points, and if you want to get the answer directly in a hurry, it will even cost 10 times more points.

But before that, the system will make a judgment on Chang Haonan's idea itself, if it is not feasible, it will directly prompt that it is impossible to form a closed loop, and if it is feasible, it will ask whether to spend scientific research points.

And this "free" feature is actually worth a lot of money.

Because it can't be wrong to at least be able to identify the big research directions.

If the paid version of the system is a perfect tutor for everything you need, then the free version of the system is a pure free-range tutor who will no longer care about you after giving a research direction.

But it's better than nothing.

So this time, Chang Haonan used this method to determine that his thinking was correct, and then he was ready to see if he could solve a problem that was not his area of expertise by himself and limited foreign aid.

The result......

Naturally, he decisively spent 30 points to restart the plug-in, and then used a light cough to cover up the instantaneous abnormality when the brain received a huge amount of information just now.

Then he spoke again:

"As Professor Lin just said, the VOF method and the LSM method are based on the assumption of fluid continuity, and their physical basis is the N-S equation, which is indeed flawed in dealing with the freezing of supercooled droplets after collision with solids."

"But we can completely change our thinking, based on Newton's mechanical equations and the dissipation-fluctuation theorem, and use the many-body dissipative particle dynamics method to carry out numerical simulation research on this problem."

"I don't know...... What do you think? ”

(End of chapter)