United Engine Corporation is starting to create a digital twin of a new generation gas turbine engine for ships with a displacement of up to 12 thousand tons. This is stated in the message of "Rostec".

- stated in Rostec.

As explained, a digital twin is a mathematical model that contains complete product data. With the help of this development, it is possible to carry out various tests at all stages of the creation and life cycle of the engine, which significantly reduces the time and cost of designing, creating prototypes, testing and fine-tuning the power plant.

- said in the UEC.

The work on the double is carried out by the Rybinsk enterprise "ODK-Saturn" together with the Peter the Great St. Petersburg Polytechnic University, Skoltech and CIAM. It is planned to develop mathematical models of GTE units and a gearbox for a basic marine engine with a capacity of 20,2 MW, a promising marine engine with a capacity of 25 MW and a gearbox PO55. Completion of the work is scheduled for 2023.

1671732195And joyful squeals! There is nothing global about digitizing drawings and creating 3D models.

This is not a 3-D model at all ... This is a WORKING mathematical model, it can be used for virtual tests, simulate emergency situations, under various loads ... At different degrees of wear. These are very cool things that allow you to anticipate problem areas in advance, save a lot of time and money on fine-tuning tests.

142953Uh-huh. A couple of students is enough (sarcasm).

130You are ABSOLUTELY not in the know! You are just confusing the active matmodel with the 3-D model ... It's a very long time to tell what the difference is. But a couple of students will be doing this for a thousand years, and it will not work either ... In such a model, there is a mass of interrelated calculations simultaneously, calculating temperatures in different parts of the turbine, compressor, bearings, gears of the reducer. There is also a calculation of fuel consumption, pressure in different stages of the compressor, depending on the speed ...

Yes, there are hundreds of parameters.

41424And the programmers got to do with it?

32Because a mathematical model is a program.

33Actually, no, the program is just an instruction for calculating the mathematical model for certain parameter values or a tool for simplifying symbolic constructions. Well, okay, let it be , probably you didn’t graduate from the Physics Department or VMiK.

1C is also a program, but an accountant is not a programmer.

Engineers work with CAE, not programmers, but here we are talking about this class of programs.

33That is, a mathematical model is not a computer program? Uh-uh ... What do they write on paper?

Engineers work with a finished product, which is created by programmers.

11It is on paper. The equations of matphysics you did not go through it is clear.

Well then ask yourself the question where does the writing of a mathematical model begin.

For example, there was an accident at the Chernobyl nuclear power plant and the thought arose that the fuel melt could burn through the foundation, the ground and reach the groundwater. Where to begin? The example is not accidental, every step has been described.

02That is, you live in the Stone Age.

11No, you simply do not create mathematical models, you use existing ones.

And it never occurs to you where they come from.

But one shouldn't get away from the example. So how did the creation of a mathematical model of the melt flow begin?

01Seriously? Do mathematical models of all equipment already exist?

From the technical task.

02No, you didn't guess. Chernobyl had no time to write TK.

By the way, I have vague suspicions that you have ever participated in projects. Usually everything starts with a technical assignment, but not with a technical assignment, but with a technical NOTE. Anyway . Second try. Introductory: Velikhov came running (I hope you know who he is) and immediately gave an introductory read about the accident at an American nuclear power plant, so can we have a "Chinese syndrome"?

02I don’t know where you saw the notes, but any serious work, including the creation of MM (if it’s not a teapot of some kind), begins with the TK.

In addition, I never saw the answer to the question, how can you create a mathematical model that allows you to simulate the operation of technical products in different conditions (and for this it is needed in order to save on field tests) if it is not a computer program?

00How old are you? You have not read GOSTs.

So, about the Chernobyl nuclear power plant, you merged. Answer people (physicists), after the call from above, gathered in the room at the blackboard (you understand, it was then customary to place a blackboard on one of the walls in the rooms of institutes) and began to write laws in chalk that could affect this. As a result of brainstorming, in the first approximation MATMODEL was born of the movement of melt through an obstacle. BORN AS

THE SYSTEM OF EQUATIONS WRITTEN ON THE BOARD WITH CHALK.Then this model was repeatedly refined (supplemented with second-order equations). Then they called in mathematicians from my faculty. They simplified the equations and told what methods to use to solve. And only then they came to my department and asked me to write a program to calculate this model.Did I answer your question? This I did not read in the wiki, the young man, I saw that board myself. If you are an engineer, this will be useful for you. If a scientist, it's a pity that everything has degraded so much.

In the late 80s, when I graduated from Moscow State University with a degree in applied mathematics, each graduate knew that a mathematical model is created by physicists, biologists, in general, not programmers, but it is our job (of applied mathematicians) to program this model. What I have been doing for 10 years

00What you are telling here is not a mathematical model that imitates a product, but a mathematical model of just one process. Well, if you want, then, you can try to paint the most complex unit by hand, on a board measuring several tens of square kilometers.

In our time and in this particular case, a mathematical model (if it is a normal model, and not a product of Horns and Hooves) is exactly a computer program that allows you to simulate the behavior of equipment in various situations, allowing you to greatly save on practical experiments.

As for theoretical physics, which you are talking about, then again there are breakthroughs of libraries containing ready-made programs for calculating anything, so the creators of the model will simply take a ready-made solution.

What up to your

And yes, I know that programmers work with what engineers ask them to do.

I answered your question?

00It looks like it's beyond your understanding.

Understand the programmers who work with engineers do not know thermodynamics, do not pass sapromat, etc. .... They cannot write a mathematical model, they can only calculate it. It's amazing why you don't understand this. You are probably not a programmer.

Try to understand after all, just one paragraph:

For example, I wrote a program for calculating epidemic mathematical models. Yes yes familiar topic? How could I calculate and create it without being a microbiologist, if I do not know anything about the factors of propagation? The last time the programmer starts working, the work on the creation of the mathematical model ends.

In general, doesn't it seem funny to you that you are arguing about programming problems with a person who is a programmer for 35 years already?

00under the supervision of design engineersApparently you cannot read what has been written?

00Can. What's under control?

00Can. What's under control?

This means that these engineers are just explaining to programmers what they do not know.

00Programmers know nothing but programming systems and algorithms.

Applied mathematicians know nothing but ways to solve systems of equations and a mathematical base.

Well, there is no sapromat, no microbiology, no hydrodynamics, no radiophysics, no thermodynamics on the VMiK. And physicists are there for only 2 semesters and this is mechanics and electrostatics. And the equations of mathematical physics are considered from the point of view of their solution and not their statement.

But what they are told is the matmodel.

00I'm wondering what is incomprehensible in this?

00You probably don't understand.

And what they explain is words, graphs, equations, but not programs, because these engineers do not know programming languages.

Hence the matmodel is not a program.

This is a verbal or formal, for example, in the form of systems of equations, a description of something from reality and in no way a program that solves or visualizes these equations.

00Then nobody needs it in FIG, because we do not live in the Stone Age and now it is the program that is needed.

00The program is certainly needed. I'm not talking about this, but about the fact that you are using the wrong terminology.

The matmodel is made by specialized specialists + mathematicians.

And programmers write programs to CALCULATE it.

And so that it could be used again by non-programmers.

I'll tell you a secret that there is still a lot of programmers' work, because what we are discussing with you is the backend.

And nowadays there is more effort in front-end programming.

Thus, programmers do not participate in the creation of a mathematical model, neither in understanding the correct, classical, nor in understanding the user.

Well, this is, of course, if you do not count those who sculpt scripts as programmers, but we do not call Excel users programmers

10And programmers write programs to CALCULATE it.

Nowadays, a mathematical model means the final product, that is, exactly the program with which you can work. The fact that programmers themselves solve technical issues no one said.

00This is by no means only to you as a user it seems so. I can give a dozen definitions without the word program. For example:

Suppose we are going to investigate a certain set S of properties of a real object a with the help of mathematics (here the term object is understood in the broadest sense: an object can serve not only what is usually called by this word, but also any situation, phenomenon, process, etc. ). To do this, we choose (as they say, build) a "mathematical object" a '- a system of equations, or arithmetic relations, or geometric figures, or a combination of both, etc., - the study of which by means of mathematics should answer the questions posed about the properties of S. Under these conditions, a 'is called the mathematical model of the object a with respect to the totality S of its properties.

By the way, this is from here:

Myshkis A.D., Elements of the theory of mathematical models. - 3rd ed., Rev. - M .: KomKniga,

2007.- 192 with ISBN 978-5-484-00953-400And in your time MM were made for whom? Once again 40 years ago, you could do anything, but