"In terms of numerical computing, if we need the assistance of our Institute of Computing Technology, we can also provide some supercomputing resources."

Xu Yang's voice was very unfamiliar to everyone except Chang Haonan.

Therefore, Yan Zhongzhong looked at the other side and was stunned for a moment, before replying:

"Of course, it would be nice to have supercomputing resources, but the key to our progress is not the amount of computation, but the limitations of software functions and algorithms."

Now Xu Yang is really interested:

"How?"

"Although the core part of the aero-fuel turbine is ready-made, the marine gas turbine and the aero engine are still very different in terms of use environment, performance trade-offs, cost control, etc., so it is not completely copied."

Because all the people present here are their own people, Yan Zhongzhong's answer is also very complete:

"For example, warships will have strict requirements for noise and vibration, especially when anti-submarine is the main mission goal, and the restrictions on aviation development in this regard will be relatively small."

"Another example is that a warship may be in the polar cold waters for a long time, and the gas turbine air intake must overcome the icy environment, while the jet aircraft is fast enough to have little to think about."

"This part of the work involves more than a dozen multiphysics couplings such as acoustic vibration, thermodynamics, and thermoacoustics, which can be accurately calculated through the current simulation modeling software...... On the one hand, it will be very difficult, and on the other hand, considering the current calculation speed of our country's supercomputer, the time it will take may be longer than building a few prototypes according to the old method. ”

"And that's just the design phase itself, and a good designer needs to take into account the ease and economy of subsequent production, maintenance, and repair work during the design process. Because the gas turbine is not sensitive to its own weight but sensitive to life and cost, Liming Plant plans to use 1Cr16Ni2MoN martensitic stainless steel to produce blades by hot forging. ”

"In the process of hot forging, the deformation, heat transfer and microstructure evolution of materials interact with each other, which greatly limits the application of the finite element method in the hot forging process that needs to fully consider the influence of microstructure, and it is also a complex multi-physics comprehensive action process......"

Yan Zhongzhong is worthy of being one of the early explorers in the field of computer simulation in China, although he has been a little thrown away by the times due to the lack of contact with the international top experience for a long time, but he can still sort out the work in a clear and clear way of thinking.

This large paragraph of words first stunned Xu Yang, and then quickly stimulated her fighting spirit.

offered to help but was not needed, for Xu Yang, it was definitely the first time for a big girl to get on the sedan chair.

"Although the current software and algorithms do not support this kind of complex multiphysics simulation, there are still many ways to overcome this problem to a certain extent......"

She thought that after throwing out this topic, she could attract the curiosity of others, especially Chang Haonan.

But everyone seemed to have a mediocre response to this, and the main owner lowered his head and unconsciously fiddled with his chopsticks in a daze.

In the end, it was Yan Zhongzhong who took over the topic so that there was no cold scene:

"I know how to break down these problems into ordinary single-field or two-physics couplings, but it requires a lot of modeling and writing code, and the computational requirements are not so high."

"This ......"

Xu Yang didn't expect that the person in front of him, who looked to be in his sixties, still had this ability.

She was actually a very pure person, so she was immediately in awe of Yan Zhongzhong:

"You also have research on multiphysics modeling?"

"I can't talk about any research, and I didn't have these skills when I was a visiting student in the UK, so I didn't learn them."

When Yan Zhongzhong said this, he looked at Xu Yang's side:

"In fact, this also requires the experience left by Comrade Chang Haonan in the previous design and improvement work of the turbojet 14, as well as complete notes.

"Dr. Chang?"

This was a bit unexpected for Xu Yang.

Of course, she is clear about Chang Haonan's level, but it is one thing to be able to be capable, and it is another thing to be able to teach or inspire others.

In fact, the more talented people are, the less good they are at it.

It's similar to letting Jordan be a coach -

You just have to jump and wait for the opponent to fall before you shoot.

Chang Haonan, who was originally in the fugue, suddenly heard someone calling his name, so he subconsciously raised his head:

"What's wrong?"

"I wonder if Dr. Chang, do you have any specific ideas for this kind of multiphysics simulation modeling calculations?"

Although this occasion is a little unacademic now, Xu Yang still can't hold back his curiosity and wants to hear the other party's thoughts.

On the one hand, it is to communicate with each other, and on the other hand, there is also a mentality that I want to see which of the two people is better at this.

However, Chang Haonan shook his head directly:

"There is no specific idea, because the current tool actually only supports the simulation of two-dimensional fields, no matter how subtle the method is used to split the specific problem, it will lead to many variables being ignored, and the accuracy of the results can be imagined, and a lot of experimental data and experience will be adjusted in the future."

When he first heard this answer, Xu Yang felt a little disappointed for a moment.

But her intuition told her that Chang Haonan's words should not be finished.

Sure enough, after a moment's pause, the latter continued;

"For example, the classical phenomenological model that expresses rheological stress through hyperbola, and the high-temperature rheological stress model that expresses material parameters as polynomials, are only pure mathematical models, without considering the microscopic mechanism in the deformation process of metal materials, and only considering the influence of macroscopic deformation parameters such as deformation temperature, strain rate and strain on rheological stress, so for each material, even if only one of the elemental components changes, it is necessary to start all over again."

"What I'm thinking about is whether we can find a way to describe the thermal deformation behavior of the same type of materials, at least from a physical point of view, and go a step further, develop a new tool, I mean a software, to achieve three-dimensional finite element numerical simulation, such as the establishment of a coupled deformation-temperature-microstructure evolution analysis system for martensitic stainless steel, so that the effects of deformation parameters on the temperature field, strain field and microstructure field can be studied at the same time without splitting. For the actual production process design and optimization, it is obviously more instructive. ”

"Ah......h

For the first time, Xu Yang felt that his train of thought was thrown away by others.

It's as if under the apple tree that has influenced physics, while she is still busy picking apples, others are already thinking about why the apple fell from the tree......

(End of chapter)