Chapter 95: Yao Mengna's Discovery

Yao Mengna lent out the "Aerodynamics News" out of interest.

She saw an article with an interesting abstract on it.

It was written by a Ph.D. from Bingcheng University of Technology.

By opening a jet slit between the suction surface and the pressure surface of the blade, the high-speed airflow of the pressure surface can be injected into the suction surface through the jet slit under the action of pressure difference, so as to delay the separation of the attached surface layer.

When she first saw this, Yao Mengna was a little shocked.

This method is simple in structure, easy to operate, and does not require additional energy injection.

If the results mentioned in the summary can be achieved, it will be a revolution in the flow control technology inside the compressor.

It seems that an article of such weight should not appear in the journal of aerodynamics.

After all, even if this journal is placed in China, it cannot be regarded as the top in the aerospace field.

In addition, considering that this is only a basic study that does not involve a specific model, it is no problem to submit it to a well-known foreign journal such as ACTA Astronautica or Advances in Space Research.

You must know that in terms of the current achievement evaluation system, even if it is the top Chinese Journal of Aeronautics in China, the weight of the latter two is not at the same level at all.

Thinking of this, Yao Mengna flipped back a little seriously, ready to see the specific content inside.

At the same time, a name that has recently appeared around her with an unusually high frequency comes to mind.

"There can't be anyone like him who doesn't even care about papers......

Chang Haonan gave up the matter of Progress in Aerospace Sciences, the top journal in the industry, and Yao Mengna had heard about it from Du Yishan before.

At that time, all she thought about was emotion and admiration for the other party's consciousness.

However, with the deepening of her understanding of Chang Haonan, she gradually realized that in addition to the problem of consciousness, there was also a big reason for that a top journal paper in the industry may indeed be nothing to the former.

Thinking of this, Yao Mengna finally realized that her thoughts seemed to drift a little too far, so she shook her head and forced herself to return her attention to the magazine in front of her.

After spending about half an hour carefully reading the rest of the content, she understood why this seemingly very tall article was posted so casually-

The verification part is too good.

Not to mention the fragmentation of the data in the experimental part, the range of experimental conditions selected is very narrow, and the influence of the properties of the jet slit on the performance of the compressor has not even been systematically studied, let alone more complex flow field simulations and theoretical analysis.

"It's a shame......"

Yao Mengna shook her head, it was not difficult for her to think that the reason for this situation was limited by objective experimental conditions.

After all, at present, no research funds are enough, and the research groups of major universities are mainly focused on making money to make a living.

If she had left it in the past, she would probably just write down the main conclusions of the article in a notebook, and tell him when she saw her mentor.

Even for Du Yishan's research group, the experimental funding is also tight, and without the support of the project, there is no condition to do this level of experimental verification.

"But ......"

After hesitating for a moment, Yao Mengna stopped putting the magazine back on the bookshelf and borrowed it.

She is going to use numerical simulation to verify the content of this article.

After returning to the calculation center, she immediately found Lin Shikuan, who was busy performing parametric fitting and flow spectrum calculations on blades with different bending designs under Chang Haonan's guidance.

Although the entire digital design team is from the 601 Institute, considering that the 606 Institute has almost no experience in numerical simulation, and the 83 Project is a whole, Yang Fenghata still assigned them all to the engine research team that is actually managed by Chang Haonan.

"Forest worker, I need to borrow a workstation from you, and ...... Well, one or two manpower. ”

"Dr. Chang, do you have any new assignments over there?"

Lin Xikuan, who heard Yao Mengna's request, was stunned for a moment, thinking that there was something new on the side of the 606 Institute, and rubbed his forehead that was swollen from working for a long time with some distress.

Although the basic principles of numerical simulation are the same, the entire team, including Chang Haonan and Yao Mengna, has a total of less than ten people, but they have to bear the entire improved calculation and simulation part, which is really a lot of pressure.

"Hmm...... It has nothing to do with him this time, it's a little bit of my own thought. Yao Mengna shook her head: "About the design of compressor blades." ”

After finishing speaking, he seemed to be worried that he would be too full, so he added: "But it hasn't been verified yet, so it's hard to say what the result will be." ”

Lin Xikuan showed a slightly tangled look.

In the duo sent by Beijing Airlines University, although Yao Mengna's light is not as dazzling as Chang Haonan, so that the entire 83 Project has a faint tendency to work around him, but if it is specific to the digital design team, it will be more helpful by Yao Mengna.

The main thing is that the latter does have a set of things when it comes to parametric design.

So he really wanted to do the other person a favor.

But at the moment, his manpower is indeed very insufficient, and Chang Haonan's progress is very tight.

"It's okay to open another workstation, but the manpower really can't be evenly out, and you know, the work of parametric fitting is mainly based on the workload of the pile." Lin Shikuan replied with some confusion:

"But I suggest you go to Dr. Chang for a favor, you should be more familiar with him than I am, in the area of numerical simulation, he alone can be at least as efficient as a company."

"This ...... All right. ”

Yao Mengna wasn't actually sure if she could really dig up anything useful from that article, so she didn't force it, but just asked for the key to the other computer room where the workstation was placed.

After opening her workstation, she typed a series of command-line statements with a not-so-skilled motion, then flipped the journal in her hand back to the page she wanted to read, and pulled out scratch paper and a red and blue pencil from the bag she carried with her.

I don't know when Yao Mengna began to put a pencil sharpener and a large handful of red and blue pencils in her school bag, and the ballpoint pen she used to use in the past had not been taken out for a long time.

But she doesn't seem to be aware of this shift herself.

"The missing part of the article, first of all, the cross-sectional shape of the jet seam, and then the location of the opening......"

"Of course, the flow problem inside the compressor is to solve the Reynolds average N-S equation, but in the case of turbomachinery, it should be switched to the rotational coordinate system to ......"

After all, she is also a person who has experienced a lot of exercises around Chang Haonan, Yao Mengna quickly wrote out the basic simulation ideas, and began to mesh, model selection and boundary conditions determination on the computer according to her own ideas.

Then, her work progress was stuck here.

(End of chapter)