Research starts with PhD students

Chapter 129: Shuimu Trip! Zhang Shuo: How to put an elephant in a refrigerator?

The internal meeting of the CP group determined the framework plan for the equipment transformation. The next step is to improve the details and finalize the plan.

Zhang Shuo doesn't need to participate in this part.

He is a specially appointed expert of the CP group, responsible for controlling the general direction of the experiment and does not need to take care of all the details.

Even if I was the project leader in my previous life, the detailed work had to be assigned to other people, as one person did not have enough energy to take care of all the parts.

Now that we have been able to follow up to this point, it is enough to control the framework of equipment transformation.

It’s like the algorithm writes out the framework plan, and the rest is just filling in the content, then modifying and testing it.

After finishing the work in the CP group, Zhang Shuo took a short rest for a day and then went to Shuimu University.

Academician Qiu Chengwen of the Mathematical Science Center of Shuimu University invited him to visit the mathematics center, which was equivalent to just passing by and paying him a visit, and it didn't take up much time.

Mizuki University is also the second stop of the "Capital Tour".

That morning, Zhang Shuo took a taxi to the main gate of Shuimu University. When he was almost there, he called to specifically mention that the location of the Center for Mathematical Sciences was a bit far from the entrance, and the person who greeted him had not come yet when he arrived.

He simply stood at the door and waited.

It is also very interesting to watch the students passing by the gate of the top domestic universities.

Many students would look in his direction when they passed by when they came in and out, and some would even point at him and talk to him.

If you listen carefully, you can hear what they say, "That seems to be Zhang Shuo, right?"

"He really looks like him, but his hair shouldn't be this long. I saw that his hair is very short in the photo."

“Maybe they just look alike.”

"Zhang Shuo is in Suzhou, how could he come to our university?"

"..."

A fat security guard looked over. He saw Zhang Shuo wandering around the door, and many students looked over when they passed by. He was walking over to ask something.

Suddenly someone passing by exclaimed, "Zhang Shuo!"

That was a girl with short hair.

The short-haired girl trotted over and shouted in surprise, "You are Zhang Shuo, right? Professor Zhang Shuo from Soochow University!"

Zhang Shuo smiled and nodded slightly.

The short-haired girl came over immediately and shouted excitedly, "It's really Zhang Shuo!"

She said to her companion, "I told you! He looks like Zhang Shuo!"

"It really is!"

Other passers-by immediately came to know about it and kept saying, "It really is Zhang Shuo!"

"Professor Zhang Shuo, why are you here at Shuimu University? Why are you here?"

"I'm so glad to see you, my god, I never thought of that!"

"Your latest research, the NS equation transformation method and the discretization method, is amazing. I have been reading it and have understood part of it."

"..."

When someone runs over and exclaims, more and more people will gather around, and even those who are just there to join in the fun will come over to take a look.

When they learned that the person being surrounded was Zhang Shuo from Soochow University, all the students coming in and out would come over to take a look.

Zhang Shuo still underestimated his own influence.

If he was standing somewhere else, probably no one would recognize him. He had just been reported in the news a few times and been on hot searches a few times. Most ordinary people don’t care about academic news. Even if someone posts a Weibo to take advantage of the popularity, or makes a few comments on something, most people will forget about it as soon as they turn their heads. The impression left in their minds is that there is a young man who is very good at mathematics and has completed great research.

More people's impression is that 'a young man who was very good at mathematics was expelled from Donggang University'.

It's different here.

Among the top universities in the country, Zhang Shuo's influence is so great that many students regard him as an idol.

'Academic stars' will naturally have a large number of fans among students, especially college students in top universities.

hula la...

A large group of people gathered around.

Some people just chatted for a few words, some took photos with Zhang Shuo with their mobile phones, and some even asked for his autograph.

There was an interesting student who didn’t bring a pen, so he used the drawing software on his phone, asked Zhang Shuo to add a few strokes, and then saved it as a picture.

The fat security guard stood at the outskirts of the crowd and asked the student next to him with some confusion, "Who is in there? Which celebrity? Why is there not even a security guard?"

The student said excitedly, "Professor Zhang Shuo, Zhang Shuo is so great!"

"Who?"

"Do you know the NS equation calculation simulation? Or the NS equation transformation method and discretization method? Master Zhang Shuo!"

"What equation?"

"Jebov guessed, now you know it?"

"What guess? What are you talking about?" The fat security guard's eyes were full of confusion.

The student tried to explain for a long time, but found that it was like talking to a deaf ear, so he simply said, "Did you watch the news? It's trending online: Donggang University's master's degree was revoked..."

Before he finished speaking, the fat security guard immediately reacted, "I know this! I know this! The student who was expelled from Donggang University!"

“Then it turned around!”

"It seems to be something about a professor and a female student?"

……

It took several professors from the Center for Mathematical Sciences to help Zhang Shuo get rid of his enthusiastic students. But in fact, he could have gotten rid of them if he wanted to, because students were not as fanatical as fans.

Zhang Shuo just stood there waiting for people, and took photos with a few students as a souvenir.

As soon as the professors arrived, he had an excuse to leave. Zhang Shuo walked towards the Center for Mathematical Sciences with several professors, and halfway through, he ran into Qiu Chengwen who came to greet them.

Qiu Chengwen shook hands with Zhang Shuo and explained with a smile, "My old arms and legs can no longer walk."

"I'm already honored."

Zhang Shuo smiled and nodded, then walked towards the Center for Mathematical Sciences with Qiu Chengwen.

They walked and talked.

Qiu Chengwen talked about the research on the NS equation. "Were the papers in the Journal of the American Mathematical Society and the Journal of Progress in Mathematics completed together?"

"Yes, they were completed together. They were all one research project." Zhang Shuo explained, "I have a colleague named Sun Xingli. He said that I had submitted one paper to the Journal of the American Mathematical Society before submitting it, and the remaining two were submitted to Progress in Mathematics."

Qiu Chengwen talked about his experience in publishing research results, "For such large-scale research, it is best to send it to influential institutions first, and then make a report to the institutions."

"With the recognition of a large institution, various academic journals will compete to invite manuscripts, and there will be no review problem."

Zhang Shuo smiled and said, "I thought so at first, but it seemed too troublesome and I had to make a special trip, so I just separated them."

He added, “The paper is not difficult to understand, so reviewing it should not be a problem.”

“You are still confident!”

Qiu Chengwen said with admiration, "It is not easy to publish three papers for a research project and all of them were approved quickly."

Large-scale mathematical research usually starts with a report in an institution. After the report, the relevant institution will announce it to the world. The paper will be very influential before it is published.

For example, the proof of Fermat's conjecture.

After Andrew Wiles completed his research, he immediately submitted it to the Newton Institute and then gave a report at the Newton Institute.

The reason why Qiu Chengwen said that Zhang Shuo was confident is that this kind of large-scale research is prone to problems, and even a small problem in the proof midway can affect the final result.

After the report is made in a large institution, the accuracy of the research can be ensured.

This was the case with Andrew Wiles' proof of Fermat's conjecture. After his first report, several minor problems arose, and it took him a long time to revise the proof.

If you submit your paper to an academic journal right away, paper review will be a big problem and it will be impossible for it to be accepted.

Of course, another big problem with proving Fermat's conjecture is that it is too difficult.

It is not easy to understand the proof process, but very difficult.

Therefore, it is impossible to pass the regular review.

Qiu Chengwen continued, "Your research is very remarkable. I have read the two subsequent papers, including the transformation and splitting method and the discrete method, which will greatly reduce the amount of calculation and improve the accuracy of the numerical method."

"In the future, the numerical method of the NS equation will be simplified, and the corresponding program will be designed to perform numerical simulation to a certain extent."

“The application value of this research is so high!”

The original DNS method can only perform short-term simulations. For example, aerodynamic high-pressure simulation calculations can only simulate conditions under extremely harsh environments.

Because the amount of calculation is very large, the simulation time will be very short.

Zhang Shuo's research greatly shortened the simulation time and improved the accuracy, allowing the aerodynamic system to be directly upgraded.

The effect is also very outstanding in other application directions.

For example, weather forecast.

Weather forecasting generally adopts statistical principles and uses probability theory and mathematical statistics methods to make weather forecasts.

This method uses probabilistic models to predict future weather conditions by analyzing historical data.

In fact, if you want to make weather forecasts more accurately, you have to use numerical weather forecasts, which means establishing initial and boundary conditions, performing numerical calculations based on the actual conditions of the atmosphere, and solving the fluid mechanics and thermodynamics equations of weather evolution through high-speed computers.

The latter is rarely used, mainly because the amount of calculation is too huge and it will cause chaos theory problems, that is, the predicted direction is not accurate. It is only used in emergency situations.

Zhang Shuo's research is expected to make numerical weather forecasting a routine method, and the calculations will be more accurate.

Weather forecasts will be more accurate in the future.

and many more.

In addition to aerodynamics and weather forecasting, there are many other engineering applications, and all kinds of applied engineering using numerical calculations of the NS equations will benefit.

Qiu Chengwen and his team accompanied Zhang Shuo to visit the Center for Mathematical Sciences, and then strolled around the Shuimu University campus, ending at the cafeteria on the west side of the university.

The two walked and talked all the way.

When I entered the cafeteria and sat down at a round table, a professor suddenly asked me a question, "Professor Zhang Shuo, can you tell me how you do your research?"

"I mean, that's a lot of cutting-edge research done in one year."

The others looked over immediately.

The same goes for Qiu Chengwen.

Zhang Shuo conducts research and publishes papers very quickly. In the field of mathematics alone, he published seven papers in top mathematics journals within one year, five of which were his own research and two were collaborative research with others. His research areas cover computational mathematics, partial differential equations and number theory.

This is really incredible.

Qiu Chengwen was very surprised. He was also a talented person when he was young, but he could never reach this level.

Zhang Shuo thought about it carefully and said, "When I do research, I usually find the right direction first and determine what problem I want to solve."

A group of people listened and nodded.

"Then, I started to focus on the research itself, solving problems I encountered along the way, and slowly completing the research step by step..."

“Then, you can make a summary, write a paper, and prepare for submission.”

After he finished speaking, he nodded thoughtfully, as if to make sure that what he said was correct.

Everyone else was stunned.

They looked at each other and simultaneously came up with a brain teaser - how to put an elephant in a refrigerator?
The issue is……

It can’t be stuffed in!
(End of this chapter)