I need to simulate a Poiseuille-like flow. The geometry is simple: the stagnation camera, the capillary, the vacuum chamber. But only the capillary is important.
I've dumped science few years ago to become a software developer, as I'm not good enough in science to earn as much as I can earn being a software developer.
But recently my were scientific advisor invited by to his threadbored office, sat into holey chair for guests. He told me about research they had been working on, said they have not enough people, and invited me back into science. That was so ridiculous! But he persuaded me to do a little simulation for them as a start, and I had to agree, just to stay in good relationship. Besides, he promised me to pay the participation in conferences, where I could convice my were scientific friends to try themselves as software developers and probably abandon science.
He showed my some zero-dimensional simulations of chemical processes, more that a dozen chemical reactions at the same time. Some other scientist did it for him, and said he used ANSYS software for that. So I'm supposed to get access to ANSYS software and do more detailed 2D or 3D simulation.
As I've said, geometry is simple, but high-temperature chemistry is important (initial mixture is H2+CH4), surface chemistry (tungsten) would be quite nice as well.
Okay, I've got access to a computer with ANSYS software installed on it. I've found ANSYS manual, but it is of about thousands of pages. No people around to help me, and I need to spend as little time for simulation as possible. So I can't investigate the whole manual and go deep into ANSYS at the very start.
So, where should I start from? Probably I need some tutorial?
It is always difficult to learn something new. For CFD, this learning curve is indeed very steep.
Any CFD exercise comprises three phases - pre-processing (build geometry and mesh), model development and solution and finally post-processing (data analysis). Have a look at this link which would introduce you to the simple problems in FLUENT.
https://confluence.cornell.edu/display/SIMULATION/FLUENT+Learning+Modules
All these problems tell you how to do it step-by-step.
Once you get a handle on this, you can venture into the more complex problem like heat and mass transport process, chemical reactions and multiphase systems.
One big drawback of using a commercial CFD package like FLUENT is the lack of provision of understanding what's happening with the governing equations in the backend. That's where reading the manual and other supplementary materials would be useful to appreciate working of the package.
Hi Roman,
I think that your problem is time to absorb these knowledge. I advise you to start with the tutorials of CFX and/or FLUENT. I do prefer CFX because the GUI is more friendly to me, but fluent is going on to reach this 'taste' I like. The last version is almost equal to CFX. But they work with two distinct Finite Volume Method. Start with tutorials to become familiar with interface, environment and available tools.
You do not need to do all tutorials, do the related to your problem, with similar physics. The CFD process starts with a CAD geometry>Mesh> Pre-processor(physics) > solution(solver)>Post-processing (figures graphics and tables).
You can do all thing in the ANSYS Workbench environment, or each step standalone. I advise you the first due to your few knowledge in CFD.
Parallel, is mandatory to knew the numerical, math and computational methods related to all pipe-line of CFD simulation. Choose a good book about CFD.
There are many video tutorials in youtube, and the ANSYS webpage. Webinars are also available concerning specific topics, as well withe papers.
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