Chapter 996 Finals, Start!

The next few days passed by as fast as flying.

Almost in the blink of an eye, it was March 27th.

According to the competition schedule, the final questions will be announced on time at 3 o'clock in the afternoon of that day, and then the answering time will start immediately.

A total of 48 hours.

Submit the engineering files and instructions before 3 o'clock in the afternoon of the 29th.

The scoring rules are basically the same as the preliminary round, and the results are determined comprehensively based on the calculation speed, result accuracy and submission time.

However, there is no three-choice-two, only one compulsory question.

Because there are nearly 70 groups and more than 200 people participating in the final, the venue is divided into three parts.

All are located in the same conference center building.

Considering that the calculation amount of the final will be much higher than that of the preliminary round, if you use a personal computer to participate in the competition, a lot of time will be spent waiting for the calculation results and trial and error, and it is likely that you will not be able to come up with the final answer within 48 hours, so Chang Haonan even found a Sugon 3000 supercomputer and allocated part of its computing power for the competition.

As long as the contestants log in to the temporary account and submit the calculation task, they can get the result in 1-2 orders of magnitude shorter than ordinary PC.

Of course, as the final, some necessary sense of ceremony is still necessary.

It is definitely not like the preliminary round, where the entire website is refreshed at the time point and a PDF is downloaded to be considered as a question.

Instead, all contestants should be arranged in a conference room first, and after Chang Haonan personally announces the question, they will go to their respective computer rooms to answer the questions -

It doesn’t matter if you don’t hear it clearly or don’t remember it, because a copy of the question will be placed in the computer in advance.

At the same time, since the competition time exceeds one day, there are no restrictions on the actions of the contestants.

Even if you are not used to the computer provided by the competition, you can bring your own equipment.

Just pass the test and register in advance.

Only registered electronic devices can be brought into the computer room.

And they cannot be taken out before submitting the answer.

It can also be regarded as preventing cheating to some extent.

After all, numerical calculation is not college entrance examination mathematics, and it is impossible to write the answer on a piece of paper or remember it in your mind.

As long as the storage medium is controlled, most of the methods will be ineffective...

...

It is said to be three o'clock in the afternoon, but many foreigners do not have the habit of taking a nap.

Therefore, just after lunch, people began to appear in the venue.

This includes the trio from Stanford University, Hirsch and Jameson--

Although the team leader cannot intervene in the competition itself, the stage of announcing the topic itself is included in the opening ceremony of the competition, and it is impossible to exclude them.

However, as a special guest of the conference, Jameson has an exclusive seat on the rostrum, and he is definitely not sitting below to listen.

"To be honest, Hirsch."

Jameson looked at Hirsch who was following behind him and said:

"Before today, I even thought you might not be able to enter the venue..."

This is of course not to mock the latter, but Hirsch, as a representative of COMSOL, has been working almost non-stop in the past three days, and has signed letters of intent with nearly 10 industry giants involved in CFD, including software training, database sharing, and priority use of new versions, etc.

Although this cannot be said to have successfully dug into the Torch Group's corner, at least the intention to wield a hoe against the host has been exposed, and the way it eats is actually a bit ugly.

In this case, even if you are directly expelled as a troublemaker, others will not be able to say anything.

But in the end, Hertz's application to attend the meeting was actually directly approved, which really surprised the other people.

"To be honest, even I didn't expect it to be so smooth."

Hiltz found a seat in the third row and put his briefcase aside:

"Moreover, this makes me more suspicious. Will the Chinese set a trap on the type of questions in the finals and then watch us make a fool of ourselves in public..."

Jameson shook his head firmly:

"It shouldn't be."

"Now almost the entire industry's media and users are watching them. If the topic of the finals is too far away from the pre-set CFD theme, then I can raise questions as a special guest. At that time, no one will look good..."

Lyles Connor sat down in a seat next to him and immediately spoke:

"And in the past month, we have been practicing for our previous weaknesses. Even if we really encounter particle flow or infinite boundary problems in the finals, we have ways to solve them."

"Take a step back, it's okay..."

At this point, he suddenly hesitated.

After making sure there were no outsiders around, he continued in a low voice:

"You can use TORCH Multiphysics software to solve the boundary problem during the calculation process, and then use COMSOL to calculate the results, and then submit the engineering file in .cmph format."

"Even if COMSOL is not good at handling such problems, it is just a calculation. Can't it calculate the convergence result?"

After such repeated persuasion, Heltz, who was still a little unsure, calmed down again.

Indeed, his preparations were almost foolproof, and he had even prepared many emergency plans in advance.

This included the trick of replacing the pillars with the beams that Lyles just mentioned.

There should be no problems.

Thinking of this, Hertz took a long breath and prepared to lean back in his chair to recuperate and take a short break.

Tonight, he has another meeting with Toyota...

The latter returned to the F1 arena in 2002, but as a not-so-old team, it is difficult to keep pace with its opponents in hardware facilities such as wind tunnels in a short period of time.

Therefore, they plan to learn from Ferrari's advanced experience and quickly improve the design efficiency and design level of aerodynamic components through cooperation with COMSOL...

Soon, the opening ceremony before the final officially began.

It was not as long and complicated as imagined.

After Song Jingming spent about 10 minutes reviewing the numerical calculations and of course the development history of Torch Group (thanks to the fact that Torch Group was established too short, there is really no history to talk about), Chang Haonan actually went on stage to speak as a special guest representative and read out the final topic.

This caught many people who were prepared to be bored for a while off guard.

"Today, I am very happy to see all the contestants win the fierce competition in their respective schools, which means that you are already the best among your peers in this industry..."

"..."

"No matter what the result of today's competition is, I hope you can make further progress in the field of numerical computing in the future..."

Chang Haonan stood in front of the stage, neither holding a speech nor looking at the teleprompter, but holding a microphone in one hand and putting one hand in his pocket, pacing slowly.

After a few simple words of encouragement, he turned around and went back to the back of the podium, and at the same time signaled the staff below to prepare to turn the page of the PPT:

"Then next, I will officially announce the topic of the final!"

The entire venue suddenly became silent.

Everyone was waiting for new characters to appear on the PPT.

"Here, I can reveal in advance that it is a two-phase flow problem."

Chang Haonan kept it a secret again.

The audience who thought he would directly say the topic made a sound of "Huh~".

It also made the originally dull atmosphere in the conference hall a lot more relaxed.

Just when everyone's voice hadn't finished, Chang Haonan suddenly attacked:

"5, 4, 3..."

The sound of counting made everyone nervous again.

Fortunately, this time it was not a suspense, but the count really reached 1.

As Chang Haonan's voice fell, the PPT was turned to the next page.

"In the production process of plastic products, microporous injection molding technology can reduce material consumption, reduce the weight of injection molded parts, improve injection molding thermodynamics, and shorten the molding process cycle. Therefore, once it came out in the 1980s, it has received high attention..."

"..."

"According to the principle of microporous foam injection molding, the first step of the process is to obtain a uniform mixed liquid before the melt is mixed and accumulated at the screw head. It is a necessary condition before microporous foam injection. This requires the screw mixing section to have corresponding mixing elements that can change the position of bubbles from top to bottom and accelerate the diffusion and dissolution of bubbles in the polymer..."

"Now set two polymer melts A and B, the specific properties are shown in Appendix 1 and Appendix 2 respectively. Please design a torsion element installed at the front end of the screw to mix the two substances AB..."

"..."

Looking at the topic on the PPT, Professor Jameson, who was sitting on the podium, first showed a hint of surprise, and then turned to joy.

Although the background of the topic looks a bit unpopular, its essence is nothing more than a two-phase flow mixing problem.

Although the traditional finite volume method is not suitable for solving such problems, the latest version of COMSOL happens to use the Lagrangian method of unstructured grids to solve this problem to a certain extent.

As long as the boundary problem is solved, the normal CFD problem can be solved step by step.

It will definitely not be difficult for Lyles and others who have been specially trained by him.

Thinking of this, Jameson even glanced at Chang Haonan behind the podium with a gloating look.

In his opinion, this should be the trick used by the other party in setting questions.

Use the boundary with drastic changes in topological structure to limit the performance of COMSOL.

But cleverness backfired.

At the same time, Chang Haonan on the stage was also paying attention to Professor Jameson's reaction with the corner of his eyes.

After seeing the latter's expression and eyes, he knew that this time it was stable.

The other party did not find the hidden pit in this question at all.

By the time the contestants found out that something was wrong, it should have been the morning of the third day, when the submission deadline was approaching.

Even if he wanted to use TORCH Multiphysics to remedy the situation, it would be too late...

In fact, Hertz's previous guess had almost accurately hit the truth.

It's just that Chang Haonan's method was much more clever than everyone expected.

Combined with excellent confidentiality measures.

In the end, such an unsolvable conspiracy was brought to the fore.