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Chapter 167 Major progress in NS equation? Wang Hao: It must be wrong(1/3)

 Wrong!

Liu Rongxing is a pragmatist.

He talked to Wang Hao about the research on the phone, and then sent someone directly over. By the afternoon of the next day, the person had already arrived at Xihai University.

There were three people coming, one was Hu Yuqun, director of the Aerodynamic Simulation Office, another was researcher Zhao Xiaofeng, and the other was associate researcher Gao Ming.

Wang Hao and Zhang Zhiqiang entertained the three of them in the Mason Mathematical Science Laboratory. They greeted each other politely, and the topic quickly turned to project research.

Hu Yuqun said, "Professor Wang, we are going to build a new aerodynamic characteristics simulation system."

"Is it the aircraft simulation system?" Wang Hao asked.

"It can be understood, but we are mainly preparing for the moon landing." Hu Yuqun said, "Heavy rockets, including manned spacecraft, require very high aerodynamic simulations, and the current system accuracy is no longer enough, especially in rockets.

, this is the biggest problem.”

Wang Hao was very interested in what he heard and asked a few more questions.

Hu Yuqun also gave a brief introduction. In fact, it is not a secret.

The outside world knows it.

The space agency has long had a manned lunar landing project, and most of the technologies have been overcome. However, there is one technology that will take a few years to break through, and that is the problem of heavy rockets.

There are several models of launch vehicles in the domestic Changzheng series.

But in fact, this technology still lags behind American and Xiongguo, because China has not yet developed a heavy-duty launch vehicle.

If we want to carry out a manned moon landing, we must create a heavy-duty rocket that can carry a manned spacecraft, has a load high enough, and is fast enough.

Such a rocket is expected to take several years to be manufactured.

Before the rocket is actually launched, a lot of simulation tests need to be carried out. They must upgrade the original aerodynamic characteristics simulation system to be able to conduct higher-precision simulations on the computer.

This is the big problem.

Their original aerodynamic characteristics simulation system is already very complete, and what they want to upgrade involves the accuracy of the algorithm inside.

The accuracy of the algorithm is not simply a matter of program logic, but is directly related to the underlying mathematical logic.

To put it bluntly, this research is to simulate the situation of rocket launch, and the most difficult part is the calculation of aerodynamic problems.

The lowest level is still the operation problem of partial differential equations.

Hu Yuqun said, "We initially approached the Aerospace Aerodynamics Research Institute and wanted to let them do the algorithm part."

"However, they also said that there are still difficulties in the underlying calculations, and it is very difficult to make a breakthrough."

"If we just upgrade the program, the effect will definitely not be ideal. To put it bluntly, we need higher computing accuracy."

"I heard from the Shenyang Power Institute that you gave a lecture there, which was directly related to aerodynamic calculations. Xihai University has built a new computer laboratory, and you are the direct person in charge, so Director Liu asked me to ask

you……"

"Look at this..."

Wang Hao did not answer directly, but asked for details, "The simulation system you are talking about, the general peripheral programs, we can definitely do it, but the core algorithm, you still have to explain it in detail, so that I can confirm it."

Hearing what Wang Hao said, Hu Yuqun felt relieved.

He was most worried that the other party would agree without understanding.

By then, if the project cannot be completed, the cost of funding will still be a small problem, but time cannot be afforded, and their research must keep up with the progress.

This time it was Zhao Xiaofeng and Gao Ming who knew the aerodynamic simulation system very well and had participated in the construction of the core algorithm.

Zhao Xiaofeng said, "In fact, it is still a problem of equation analysis. We need to find a general algorithm in complex equations, and the conclusions drawn by this algorithm must be close to reality."

"For example, the conditions of each part of the rocket are different. A lot of parameters need to be input, and the density of the atmosphere needs to be considered, and even the situation of encountering special clouds needs to be considered."

"There are many associated parameters, which will lead to many complex operations. Some equations cannot be solved. Even if they can be solved, the process is too complicated and there is no way to obtain the results using fixed procedures."

"In aerodynamic simulations, most of them are approximate calculations, which involve deviation values. We need higher accuracy in calculations."

"This is what the core algorithm mainly solves."

Hu Yuqun added, "As long as the core algorithm can be completed, other requirements are not high. Normal output of images and numerical data is enough. It is not necessary to build the entire system, but to build the parts related to the core algorithm. For the rest, we have

Other departments will complete it.”

Wang Hao understood it this time, and he knew he could do it after thinking about it.

This project was approached based on his research.

In fact, this is also true.

Liu Rongxing initially wanted to find an aerodynamic research institution to complete this project. Later, he learned that Wang Hao had conducted a new research that could approximately solve a system of partial differential equations and could continuously approximate it.

In addition, Wang Hao is also an internationally recognized top algorithm expert. He has personally developed two very influential new algorithms.

In this way, it is natural to ask Wang Hao to do the core algorithm to ensure stability. As for the programming related to the core algorithm, it is just a minor problem.

Therefore, Liu Rongxing did not even consider the scale of the Mason Mathematical Science Laboratory.

Wang Hao agreed, "From what you said, there should be no problem. I have been doing this research."

"We require high precision for aerodynamic calculations, but because it is a general-purpose calculation and is only used for simulation, it will definitely not be able to keep up with the accuracy of top fighter aircraft designs."

This is true.

The aerospace field requires higher calculation accuracy, but using computers for simulations involves general computing issues, so there is no way to require too high an accuracy.

Wang Hao continued, "As for the accuracy issue, we will definitely talk to you when we do the core algorithm. There should be no other problems."

The few people discussed for a while, and then the topic turned to the issue of funding.

Hu Yuqun negotiated the price as soon as he opened his mouth, "Ten million, this is already determined."

He continued bluntly, "The funding period is one year. If it is not completed after one year, we can only withdraw the funding, but if it is completed, the funds will not be recovered."

This is a horizontal ‘bump-sum project’.

As long as the project can be completed within the specified time, the funds will belong to the R&D party, but if the project cannot be completed, the investment will have to be withdrawn.

Wang Hao thought for a moment and didn't even raise the price because there was no more space.

This project is not small, requiring more than a dozen people to work on it for several months, but as for the core algorithm, he can complete it himself, it just requires some research and thinking.

What the Systems Engineering Department buys is the core algorithm.

A dozen people work for several months, and each person is paid a salary of 100,000 yuan. Two million is enough, and the labor cost is just that much.

A large part of the 10 million yuan will be left over.

So there is no room for price increase.



Wang Hao and Zhang Zhiqiang negotiated the new project together. In fact, the project was delivered to the door.

They nodded and the project was created.

It's all that simple.

After Hu Yuqun and the others left, Zhang Zhiqiang was still stunned, with a face full of disbelief, "So, we negotiated a 10 million project?"

"yes."

"It seems easy?"

"Um."

"We are so good..."

Zhang Zhiqiang wanted to boast, so he paused. Thinking back carefully, he seemed to have entertained people for a while, and at the end gave them away. There was also a time to talk in the middle, but it had nothing to do with the key issues.

He was talking about the project and made no contribution at all.

But mainly...

The other party is not interested in him at all!

The two walked out of the director's office together and saw Zheng Yaojun coming, and asked, "What did those three people do just now?"

"Sending a project." Zhang Zhiqiang said calmly.

"Send a project? Is there such a good thing? What project?"

"Ten million project."

"..."

After hearing this, Zheng Yaojun opened his mouth slightly and didn't close it for a long time, "Ten million, are you kidding me?"

"Can I be kidding?" Zhang Zhiqiang became excited as he spoke, "Just now we negotiated a 10 million project. Go and prepare. We are going to get busy."

Zheng Yaojun looked at Wang Hao blankly.

Wang Hao nodded and said, "Zheng Yaojun, get ready. There are only three people in our laboratory now, so I will assign the work."

"Yeah, yeah." Zheng Yaojun hasn't fully digested the information.

Zhang Zhiqiang became very serious.
To be continued...
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