ANSYS Software for Simulating Fluid Phase Change in Steam Generators

In summary, ANSYS software has the capability to simulate system temperature and flow fields in steam generators, including two-phase flow. However, there is ongoing research and development in this area and it is important to validate the results for each specific application.
  • #1
law&theorem
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Hi, guys there is a quesetion:
Could ANSYS software be used for simulate system temperature and flow fields when fluid phrase change, such as in steam generators.
 
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  • #2
law&theorem said:
Hi, guys there is a quesetion:
Could ANSYS software be used for simulate system temperature and flow fields when fluid phrase change, such as in steam generators.
ANSYS CFX is capable of modeling two phase flow in steam generator geometries.

http://www.hzdr.de/db/Cms?pOid=24686&pNid=3016

Here is an example by Westinghouse: Design and Analysis of Nuclear Steam Generator Components Using CFX-5 (2004)

"Each component has its unique fluid conditions ranging from single phase to two-phase flow plus corrosion particles and solute. Modules of CFD analysis for various components are being developed using the CFX-5 program."

http://www.ansys.com/staticassets/ANSYS/staticassets/resourcelibrary/confpaper/2004-Int-ANSYS-Conf-42.PDF [Broken]

Here is an example of ANSYS Fluent
http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.elsevier-ef38385b-eb1b-389d-80b3-f8a58d329f2b

B&W has applied CFX in 3D flow simulations.
http://www.babcock.com/services/Pages/3-Dimensional-CFD-Analysis.aspx [Broken]
 
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  • #3
Modeling two-phase flow with CFD is extremely difficult and is on the cutting edge of research. You need to know exactly what flow regime you are modeling and whether the code can handle it. STAR-CCM+ claims to be able to model bubbly flow with fairly good results. I can't speak for CFX.

Looking at the papers that Asronuc cited, it is not clear if these are actually modeling two-phase flow regimes of interest.
The ANSYS paper is modeling stratified flow, where the two phases are fairly separate.
The Westinghouse paper appears to be modeling single-phase regions of the steam generator.
The "yadda" paper says it is using a "simplified boiling model" with porous media. I don't know what that means exactly.

I suspect that true two-phase capability is not quite ready. In any case, you should validate the results for any CFD calculation to your specific application.
 

What is ANSYS software?

ANSYS software is a computer-aided engineering (CAE) software that allows engineers and scientists to simulate, model, and analyze their designs and products. It is widely used in various industries such as aerospace, automotive, and manufacturing to optimize product performance and reduce costs.

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The main features of ANSYS software include structural analysis, fluid dynamics, electromagnetics, and optimization capabilities. It also offers a user-friendly interface, high-quality visualization, and robust simulation capabilities to help users solve complex engineering problems.

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ANSYS software offers a cost-effective and time-efficient solution for designing and testing products. It allows scientists and engineers to accurately simulate and analyze their designs, identify potential issues, and make necessary improvements before physical prototyping, which can save time and resources.

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ANSYS software is suitable for a wide range of simulations, including structural, thermal, fluid dynamics, electromagnetic, and multiphysics simulations. It can handle both linear and non-linear analyses and can accurately simulate various real-world conditions and scenarios.

How can one learn ANSYS software?

ANSYS software offers various resources for learning, including tutorials, webinars, training courses, and documentation. Additionally, there are many online forums and communities where users can exchange knowledge and get support from other experienced users. ANSYS also offers certification programs for those who want to become experts in the software.

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