Research starts with PhD students

Chapter 146: Age is not a factor in judging a judge! Yan Chongwen: I feel offended!

Knowing the calculation method, Zhang Shuo quickly used a computer to find a set of numerical solutions.

The entire calculation process took about 20 minutes, including the time for manual derivation. The process of deriving the formula required almost no thinking and was completed quickly.

Huang Junwei and Qin Haifan stood aside and looked a little confused. They didn't understand the calculation process.

Qin Haifan kept reading the derivation manuscript.

Huang Junwei stared at a set of numerical solutions. He had no idea how accurate the solutions were.

This can only be verified by experiment.

However, personally, he felt that this set of numerical solutions seemed much more reliable than the one they had found.

On the way back, both of them were silent.

They came to the seminar just to talk to Zhang Shuo about the problems they encountered in their research, hoping that Zhang Shuo could give them some suggestions on how to solve them. They didn't expect that Zhang Shuo would solve a difficult problem directly after taking it out.

This is not the only problem, but just one of many.

For example, the appearance design of an aircraft involves the wings, fuselage, tail, etc. The drag calculation of each part is very important.

Aircraft engines also require many difficult calculations, such as the wind strength at the engine air inlet and the complex power calculations generated by the engine jet air.

and many more.

There are many critical and complex computing problems in every direction of work, and every engine and every aircraft design has its own special computing requirements.

The problem Zhang Shuo wanted to solve was simply the calculation of air flow near a fixed-design wing.

If the design is slightly modified, then recalculation is required.

So, what is important is the method.

"But the method is not universal." Qin Haifan, who had been holding the manuscript of the derivation process in his hand, judged, "This calculation seems to be only for this set of equations. If you change another set of equations, even if you change an important parameter, it will not work."

“It felt like the process was very serendipitous, as if it was designed specifically for this set of equations, rather than a general approach.”

"In such a short time... Professor Zhang Shuo's level..."

Qin Haifan felt like he couldn't find any adjectives.

Huang Junwei thought for a moment and said, "Should we study each problem individually? Otherwise, how about we cooperate with Professor Zhang Shuo?"

"How to cooperate?"

"Computational projects? Some very difficult calculations, work with him."

Qin Haifan shook his head and said, "A set of equations is a project. Professor Zhang Shuo calculated very quickly, but think about it, how long have we been calculating? Moreover, we haven't calculated any meaningful results yet."

"If we change a set of equations or a problem, we have to study it all over again. It's impossible to leave all the calculation work to Professor Zhang Shuo, right?"

"You're right."

Huang Weihua thought about it and it was true. "Or, if we encounter critical and difficult calculations, can we ask Professor Zhang Shuo for help? We can treat it as a project, but we still need to go back and discuss it. We can't decide."

"The gap between our levels is too big..."

Qin Haifan also sighed.

On the one hand, they were surprised by Zhang Shuo's level, but on the other hand, they felt a little ashamed of themselves and felt that their academic confidence had been severely hit.

……

On the second day, the seminar on nonlinear partial differential equations officially began.

At 8:30 in the morning, the opening ceremony of the seminar was held in the school auditorium. Since it was just a seminar in a professional field, the opening ceremony consisted of a simple speech and report.

The opening speech was given by Tan Youming, who basically welcomed everyone and explained the importance of nonlinear partial differential equations and the significance of the seminar.

Afterwards, Qi Zhixiang and Luo Yongjun respectively explained the process and arrangements of the seminar.

Then there is Zhang Shuo.

Zhang Shuo was the specially invited judge of the seminar and gave a 20-minute personal work report on stage.

Personal work reports are different from team work reports. There is no need to talk about data directions and the like. Generally, you will talk about what research you have done, express your opinions on the research field, etc.

The content of a personal work report is very open and you can also talk about other things.

Zhang Shuo explained his research and direction in a routine manner, "In the past month, my main focus has been on the singularity proof of the NS equation."

"Singularity argument is a very important direction in nonlinear partial differential equations. Many nonlinear partial differential equations have singularities, and the existence of singularities directly affects the regularity of the equations..."

He started with a discussion of singularity proof and briefly talked about his research direction, which is to use the mapping of two-dimensional NS equations to prove the singularity problem of three-dimensional equations.

Then we talked about research methods and ideas.

A twenty-minute report is not long, and many people felt that they only listened to the beginning and then it was over.

Many people at the conference discussed Zhang Shuo's research direction. "Using two-dimensional mapping to find three-dimensional singularities is a very unique direction!"

"I have no idea how to start my research..."

"Why do this?"

"It's obvious that the solution to the two-dimensional NS equation is smooth. If we can use the two-dimensional to connect the three-dimensional and prove that there are no singularities, wouldn't that complete the proof of the smoothness of the NS equation?"

"What if there is a singularity? The NS equations are likely to have a singularity, right?"

"You'll have to ask Professor Zhang Shuo about this."

After Zhang Shuo finished his report, he walked off the stage. He sat in the first row of the host seats, next to Luo Yongjun and Qi Zhiqiang.

Luo Yongjun said worriedly, "You shouldn't tell others about your research methods. What if others follow your method to do research? This kind of thing happens in academia."

Qi Zhixiang also said, "Unless there are achievements, it is generally not necessary to mention specific research methods in work reports." "I won't do that next time."

Zhang Shuo accepted the suggestion frankly, and then said, "But it doesn't matter. Someone is doing research in this direction faster than me, which means that his level is much higher than mine, so he doesn't need to follow my direction."

Qi Zhixiang was stunned for a moment and smiled bitterly, "Only you have such confidence."

In innovative research, ability is one thing, but inspiration is even more important.

It is uncertain whether the research direction of three-dimensional mapping is correct. Assuming it is correct, someone may conduct research in this direction and achieve a series of results.

However, Zhang Shuo really didn't care.

One reason is that he was not the only one who thought of the idea of ​​using two-dimensional mapping to prove three-dimensionality. Many people must have studied it.

This direction is not optimistic because it is difficult to imagine the next step of argumentation.

Many people who study the smoothness problem of the NS equations start with the weak solution, because the weak solution is relatively easy to prove, and they can think of several methods to expand it easily afterwards.

Using two-dimensional mapping to prove the direction of three-dimensionality will not only fail to make people's eyes shine, but will also make people feel that the road ahead is difficult and dangerous and they cannot move forward at all.

Therefore, even if other people knew his research methods, most of them would not be able to follow his research methods.

Maybe someone will do that.

But when it comes to research speed, Zhang Shuo doesn't think anyone can compare with him. After all, others don't have a systematic guiding direction.

……

The opening ceremony ended and the academic seminar officially began.

Academic seminars involve discussions among experts, and there are also many academic reports at the conference.

Generally, seminars are relatively small in scale.

This time is different.

More than three hundred people came to participate in the seminar, not including doctoral students of our school. The number of research papers submitted and approved also exceeded one hundred. In order to complete the seminar within three days, other lecture halls had to be allocated.

The school allocated a row of small classrooms and a large classroom on the side to be used as lecture halls for seminars.

The High Court also invited some experts who attended the seminar to serve as judges.

Zhang Shuo is one of the judges. He is interested in the property proof of solutions of nonlinear partial differential equations. However, similar research is relatively difficult and the reports are all conducted in a large classroom.

So Zhang Shuo sat in the "jury seat" in the first row of the classroom.

Luo Yongjun was also interested in the study of pure mathematical arguments, so he sat together with Zhang Shuo, and next to him was Academician Yan Chongwen.

Research reports in a large classroom are relatively more difficult. The presenters were mentally prepared, but when they saw a mathematics academician among the judges, they still felt a little nervous.

This was just a one-way academic seminar, and they never thought that there would be any academician review.

In fact, Zhang Shuo is also very famous and has achieved quite amazing results, but he looks younger and seems much more approachable.

soon.

The academic seminar officially began.

Those who come to give reports are all doctoral students and post-doctoral fellows. The highest level is associate researcher and associate professor. The level of their research content is relatively low, and there are not many real results.

Zhang Shuo listened very carefully.

Especially for every perfect report, he would complete the task after listening to it, and would study the gains in understanding after submitting the task.

On the one hand, it can enhance the understanding of arguments in related fields, and on the other hand, the study of the singularity argument of the NS equations is also meaningful.

Task progress will occasionally increase.

Not all reports are perfect and correct, and there will be problematic reports along the way.

After entering the question-and-answer session, Zhang Shuo directly pointed out the problem, "Your logic in the third part of the transition is not self-consistent."

"You can look at the third part yourself. If it is an infinite situation, it is possible that a singularity exists."

Next--

"The marginal function argument you made is incomplete. The marginal function may have concave points and is not necessarily a smooth surface."

"But the research is not a big problem. You can think about it carefully..."

Zhang Shuo pointed out the key issues twice in a row, and subsequent presenters looked at him differently.

When the question-and-answer session began again, even several people on the jury looked at Zhang Shuo. They felt that Zhang Shuo seemed to be able to point out the key issues directly.

The presenter cared very much about Zhang Shuo's reaction and felt that as long as Zhang Shuo didn't speak, there would be no problem with his research.

Once Zhang Shuo opened his mouth, problems arose.

For some imperfect research reports, it is beneficial to have Zhang Shuo point out the problems, so that they can know where to make improvements and think.

After the morning lecture, several attendees walked out, discussing with admiration, "Professor Zhang Shuo's level is really high. He pointed out key issues several times!"

"I originally thought he was just a judge to watch..."

"So age really doesn't matter when it comes to math. Even for judging, it's not just about age!"

"yes……"

Zhang Shuo and his companions were also walking outside and vaguely heard the conversation ahead.

Yan Chongwen looked at Zhang Shuo on the left and Luo Yongjun on the right, and suddenly felt offended from the bottom of his heart...

(End of this chapter)