Chapter 164： Mathematical Contest in Modeling begins

At 5 pm that day, all the university's chip research team arrived at the Guanghua Hotel.

Originally, Chen Hao wanted to invite the principals and vice-principals of each school to have a meal together in the evening, but he was rejected.

Changed to noon the next day.

As for tonight...

At 7 o'clock, a dozen people stepped into the institute together.

From the entrance of the institute, the professors were dazzled by the smart access control system.

Once inside, it's even worse.

In the optical core laboratory, everyone opened their eyes and immediately put away their contempt.

To be able to achieve today's status, naturally there is no fool.

at the same time.

School of Engineering and Technology Teaching Building 606.

"Old Zheng, Elbow, are you nervous?" Zhang Lei felt that his little heart was pounding, and he was afraid that it would jump out.

Lu Zhou said calmly, "It's okay."

On the other hand, Zheng Tianyu glanced at the time on the computer. He was also a little nervous. He pretended to be okay and sneered at Zhang Lei, "It's 19:31, and the game will start in 29 minutes, old Zhang, are you cowardly? ?"

This sentence directly stimulated Zhang Lei, his face flushed, and he shouted directly: "Gill! I'm Zhang Lei afraid that this game will fail?"

Zheng Tianyu exhaled, "Isn't that the case? Don't worry! You've been preparing for so long, just stay steady."

After this interruption, Zhang Lei's nervous mood was relieved a lot.

Time passed bit by bit, and finally it reached 20:00 after more than 130,000 college students waited.

Zheng Tianyu shouted in a low voice, "It's started!"

The much-anticipated 2020 National Undergraduate Mathematical Contest in Modeling has officially started!

When the time came, the three of them hurriedly downloaded the title.

There are five questions in this Mathematical Contest in Modeling. Each group can only choose one question to answer, and it must be completed and uploaded within 72 hours.

[Question A - Pressure Control of High-Pressure Oil Pipes]

[Fuel entering and ejecting high-pressure fuel pipes is the basis for the operation of many fuel engines. Figure 1 shows the working principle of a high-pressure fuel system. The fuel enters the high-pressure fuel pipe from A through the high-pressure fuel pump, and is then ejected from the nozzle B...]

There are three questions in total.

After reading the three questions, the three looked up at each other and exchanged views.

Zheng Tianyu looked sad and said sadly, "This question... involves physics. We just learned it this semester..."

"Uh, I don't think this question is good." Zhang Lei is messy, why is it so difficult when he comes up?

Lu Zhou pushed his glasses and said, "Question A is to be determined, I'll take a look later."

Zhang Lei widened his eyes and said in surprise, "Elbow, aren't you also a sophomore? Do you still know physics?"

Lu Zhou said simply: "I have taught myself, and college physics is not difficult."

"Big things aren't difficult??? Really fake, I heard seniors complain that big things fail a lot of subjects?" Zhang Lei looked disbelieving.

Lu Zhou raised his eyebrows, "Maybe this is a rookie's dish."

Zheng Tianyu bared his teeth and quickly reminded: "Continue to read question B, stop discussing."

[Research on the Strategy of "Working Together" for Title B]

["Working Together" (also known as "Tongxin Drum") is a teamwork ability development project. The props of this project is a double-sided cowhide drum, with multiple ropes fixed in the middle of the drum body. The fixed points of the ropes on the drum body are evenly distributed along the circumference, and each rope has the same length...]

Zheng Tianyu looked at the question, pondered for a moment and said, "This question is finally normal, it doesn't involve physics knowledge, the difficulty is okay, what do you think?"

Lu Zhou suggested: "Let's look down."

[Title C at the airport taxi problem]

[Most passengers go to the urban (or surrounding) destinations after getting off the plane, and taxis are one of the main means of transportation. Most domestic airports separate the drop-off (departure) and pick-up (arrival) channels...]

Zhang Lei took the lead and said: "This question doesn't seem to be difficult. There are four questions in total. I think it can be determined!"

Lu Zhou objected and said: "I looked at the following questions, and I feel that the data at the airport is difficult to find, and it may be a little troublesome."

"Will it be?" Zhang Lei was stunned for a moment, and he slid the mouse to look at the question.

Just watching, accidentally flipped to the back.

Zhang Lei looked at question D on the screen and shouted excitedly, "Fuck, Elbow, Lao Zheng, this question is simple, let's answer question D directly!"

Question D on the screen was much lower in difficulty than the first three. Zhang Lei was so excited that he danced with his hands, shaking his hands on the shoulders of Zheng Tianyu and Lu Zhou.

However, Zheng Tianyu swept away Zhang Lei's hand with a look of disgust, rolled his eyes and replied, "Are you stupid? Question D belongs to the specialist group, mentally retarded!"

There are five questions in the Mathematical Contest in Modeling: ABCDE.

Among them, ABC is the subject of the undergraduate group, and DE is the subject of the specialist group.

Under normal circumstances, there would not be such a silly look like Zhang Lei looking at Question D with excitement.

"Uh, yes, I remembered, no wonder it's so simple..." Zhang Lei scratched his head and asked awkwardly, "Then which of these three questions should we choose?"

Zheng Tianyu looked at Lu Zhou and asked, "What do you think of Elbow?"

"Question A involves physical knowledge, question B is a relatively normal mathematical modeling question, and question C seems simple, but it is difficult to find the airport data by yourself."

After calmly analyzing, Lu Zhou said to the two of them: "We have plenty of time to choose the topic, otherwise we will. Before 9 o'clock, the three of us will try the three ABC questions separately, and then we will communicate. situation to decide.”

Zhang Lei asked, "How is it distributed?"

Lu Zhou said: "I will come to question A, leave it to Lao Zheng for question B, and question C is relatively simple, Lao Zhang."

"Why do I do the easiest thing, I can also do the B question."

Zhang Lei complained, but his body was very honest, and the computer Baidu was turned on.

Just when the three of them were busy choosing topics.

In the computer room of Nanjing University.

As a strong school in mathematics, NTU participates in the Mathematical Modeling Contest every year, and this year there are more than a dozen teams.

As soon as the topic came out, the computer room directly turned into a vegetable market.

"Damn it, what the hell? I haven't learned physics yet. How do I do question A?"

"This b question looks interesting."

"Brothers, where can I find the airport data for this question C? I rubbed it, but Baidu couldn't find it. There is only past data, not real-time!"

"Is it too late to retire now..."

After the scumbags finished complaining, the tyrants began to appear.

"Is it so difficult? Isn't it easy?"

"It's really not difficult, just choose question A, what else can you choose?"

"It's really not difficult, let's start solving the problem."

At the beginning of this year's Mathematical Modeling Contest, it was directly bombarded by the title, and several limericks appeared on the Internet.

"Physically no, the tubing will be scrapped.

The big drum hit the ball, scratching his head in confusion.

Didi picks up customers, but there is no data.

Twenty modeling, I'm really Buddha. "

...

An hour later, Zhang Lei was already depressed.

"The airport data can't be found at all. It is estimated that we have to put crawlers on the airport website to run the data, which is a bit troublesome."

"The difficulty of question B is not bad. It is easy to win the country. It is estimated that the higher education club cup is hanging." Zheng Tianyu frowned.

According to the experience of previous years, Question A of the Mathematical and Analogue Contest is a test of strength. Generally, the Cup award of higher education clubs comes from Question A; and Question B can be done by a team, but it is hard to say whether they can win the award or not.

Lu Zhou also spoke and said: "I looked at question A. This is a fluid problem combined with control. It is very similar to the 2016 Meisai bathtub problem Using finite element, Fluent should be able to get some parts. content solution.”

Zhang Lei was dumbfounded and asked, "I know finite element, what is Fluent?"

Lu Zhou replied: "Fluent is a very simple flow finite element simulation."

Hearing the word "simple", Zhang Lei showed a look of joy, "Just use this to answer the question."

However, Lu Zhou shook his head and refused to say: "It is not difficult to answer the questions with commercial software, but this is basically a farewell to the national award. This competition examines how to use mathematical knowledge and delve into the combination of finite element equations and physical theory."

"Emmm..." Zhang Lei didn't know what to say, he couldn't understand this question a.

"Choose question A! Although question b is low in difficulty, it is difficult to win the higher education club cup. Question a is very difficult. As long as you do well, there is still hope for you to win the higher education club cup."

Lu Zhou looked at the two of them and reminded: "After all, don't forget our goal, both of you."

The goal... is to win the championship, of course!

This was agreed before, Zhang Lei and Zheng Tianyu looked at each other and nodded.

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"Then choose question a! Are you okay with the elbow?"

"No problem, it's not difficult." Lu Zhou shook his head, his eyes fixed on the screen, and there seemed to be sparks in his eyes.

"Then let's get started!"

ps: This chapter has been revised, the competition is really difficult to write. . . I transitioned quickly.

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