Chapter 41 How about trying the honey trap?
Tang Lintian, who was almost hit in the face with an elbow from the boy sitting next to him, showed a somewhat embarrassed smile.
He is a good-natured person. He is not angry at all, but feels a little embarrassed.
Fortunately, after looking around, I found that everyone was either taking notes or looking at the blackboard, and no one else noticed what just happened.
Tang Lintian breathed a sigh of relief and fell into thinking again——
Although his attempt to strike up a conversation was unsuccessful, his initial goal was achieved.
Judging from the other party's reaction just now, the harvest is obviously not small.
This suddenly gave Tang Lintian some ideas.
He planned to wait until the group meeting was over and go to Du Yishan to ask about the student.
Maybe...
Can you consider directly hiring someone to stay in school after graduation?
To be able to join Du Yishan's research group, his scientific research ability is definitely not good enough. The level of lectures is still so high, it is a treasure.
If by then we can cultivate a large number of the aviation talents that the country is most in need of...
Tang Lintian's mind has gradually begun to let himself go.
“But if you are a doctor, just giving a lecturer title may not be very attractive...”
Thinking of this, his excitement quickly turned to worry.
In this year, there is no institutional policy for direct appointment of associate professors after doctoral degrees.
Let alone the dean, the principal of Jinghang cannot make this decision alone.
You must have worked as a lecturer for at least two years before you can start applying for review.
And because of limited funds, the salary of university faculty and staff is also relatively low.
So overall, the appeal is actually quite limited.
So Tang Lintian has begun to think about what other attractive conditions the college can offer.
"Prioritize allocation of housing?"
"Resolve Beijing household registration?"
"..."
After thinking for a long time, Tang Lintian still couldn't figure out a safe way.
For a doctor with such a strong ability, if he goes to a foreign company, it may not be a problem to earn hundreds of thousands or even two or three hundred thousand a year.
In the two years that I wasted working as a lecturer, I had almost earned my house and household registration in Beijing.
"How about... try the beauty trap?"
Tang Lintian touched his chin, his thoughts becoming increasingly inconsistent. Just when he was already thinking about whether there was any young female teacher in the college who could tie him up, Chang Haonan finally sat back in front of the computer and officially started to demonstrate the computational fluid dynamics simulation example.
Compared with the theoretical explanation just now, everyone is more interested in this part.
Of course this also includes Tang Lintian.
So he had to put his thoughts aside for the time being and return his attention to the curtain in front. At the same time, he turned his notebook to a new page, ready to see what the other party's skills were in the field of practical applications.
“The process of computational fluid dynamics simulation can be roughly divided into the following six stages.”
Chang Haonan opened the 3D modeling software on the computer as he spoke, and continued to preach while it was loading:
“Conduct three-dimensional modeling of the research object, establish a simulation calculation domain, and mesh the calculation domain. , determine the calculation model, solve the calculation and post-process the simulation results. ”
If a real simulation project starts from three-dimensional modeling, it will take at least a few days, so Chang Haonan naturally does not. Maybe actually go through the whole process again.
Long before the group meeting started, he had already thought about the detailed distribution of this part of the content.
“This calculation simulation process will be covered in many related guide books. Because today’s time is limited, I will focus on some details and key points in the simulation. These are some of my personal experiences and textbooks. These contents should not be found above.”
Chang Haonan said this casually, but it made some teachers below who usually just read textbooks in class feel a little ashamed.
“After establishing a three-dimensional model, you must remember to make necessary corrections to the model, otherwise problems may occur during the meshing process. For example, the model on the screen now is the body of an airplane. For the head part, we need to solidify the small piece of the radome head to make it suitable for volume meshing..."
"According to my experience, the quality of the three-dimensional volume mesh must be at least Only when it reaches 0.25 or above can a more accurate simulation be carried out, so for complex models, do not directly generate a volume mesh. My personal habit is to set the line mesh first, and then set the surface mesh to generate a surface shell mesh. On this basis, the shell mesh is then used to generate the volume mesh..."
Because Chang Haonan directly used the engineering files when he was working on the improved J-7, there were very few parts that required him to actually get started. But this did not affect the excitement of the process. Instead, it freed up his energy to explain in detail the more difficult and error-prone parts of the operation steps and focus on demonstrations.
Most of these contents have nothing to do with the system, but a lot of experience that Chang Haonan himself summed up during more than 20 years of stumbling in his previous life.
For the vast majority of beginners who are listening to the lecture below, it does not make much sense to repeat to them the "optimal problem-solving process" provided by the system at that time.
On the contrary, the experiences and lessons of these predecessors are what they need most.
Anyone who has done research or written code knows that the most desperate and painful time is when you clearly know that there is a problem, but you have no idea where the problem is.
Therefore, these "wrong question collections" shared by Chang Haonan soon aroused a lot of resonance among the audience.
Some people even realized their previous mistakes on the spot.
Tang Lintian, who was taking notes, was secretly frightened. Many of the simulation techniques and key points that Chang Haonan just talked about were things he had never even thought about.
Some of them have never been encountered before, and some of them have been encountered before, but they didn’t even know that they did something wrong before.
In numerical simulation, it is very likely that errors will collide and lead to correct conclusions, but these concealed errors will not really disappear. Sooner or later, they will explode in other projects.
He simply couldn't imagine how this young man who was clearly only in his twenties could have such rich experience.
This further strengthened Tang Lintian's determination to keep Chang Haonan in school.
"After completing the calculation, if you want to further determine the accuracy and reliability of the calculation results, you can also conduct an independent verification of the impact of the number of grids on the accuracy of the calculation results. However, this is not a necessary part. In addition, now It’s getting late, so I want to come here first today. I hope that what I just reported can bring some inspiration to everyone. Thank you everyone!”
As Chang Haonan’s final words of gratitude fell. , the whole classroom suddenly burst into endless applause.
(End of this chapter)