Third year project - CFD nozzle design

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Discussion Overview

The discussion centers around the design and analysis of a nozzle for a fire extinguisher as part of a third-year project. Participants explore the use of GAMBIT and FLUENT for computational fluid dynamics (CFD) modeling, as well as alternative software options for geometry creation and mesh generation.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant expresses difficulty in using GAMBIT/FLUENT and seeks advice on fluid flow analysis within the nozzle.
  • Another participant suggests using Pointwise for mesh drawing, noting that many CFD programs are similar.
  • Some participants argue that Pointwise is preferable to GAMBIT, citing its user-friendliness.
  • A participant mentions their experience with other CFD software, including CFD++ and ACE/FASTRAN, but admits to not using GAMBIT or FLUENT.
  • One participant confirms that the university has instructed the use of GAMBIT for mesh creation, followed by importing into FLUENT for analysis.
  • There is a question about the possibility of modeling the nozzle in ProEngineer and exporting it to GAMBIT/FLUENT, with a participant suggesting that it is feasible but lacking expertise on the topic.
  • A participant inquires whether the model will be 2D or 3D and what computing resources will be used for the analysis.

Areas of Agreement / Disagreement

Participants express differing opinions on the best software to use for the project, with some advocating for Pointwise over GAMBIT. There is no consensus on the best approach for modeling and analysis, and the discussion remains unresolved regarding the optimal tools and methods.

Contextual Notes

Participants have varying levels of experience with the mentioned software, and there are uncertainties regarding the compatibility of ProEngineer with GAMBIT/FLUENT. The discussion does not clarify specific steps or methodologies for the CFD analysis.

stokie1991
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Hi, for my third year project i have got to design a nozzle to fit a fire extinguisher. However firstly i must analyse fluid flow within said nozzle, but i have no idea how to use GAMBIT/FLUENT and finding it difficult to find relevant user guides on the internet. Anyone care to offer some advice? Thanks
 
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Are you using Pointwise to draw the mesh? That project is pretty straightforward. I've done a lot of CFD, but haven't used either of those programs. Although, most of them are pretty similar.
 
Clearly he isn't using Pointwise because he is asking for GAMBIT help. If Pointwise is available though, it should be used. It is so much nicer.
 
boneh3ad said:
Clearly he isn't using Pointwise because he is asking for GAMBIT help. If Pointwise is available though, it should be used. It is so much nicer.

Like I said, never used them before... Only heard of Fluent. I use CFD++ and a new one made by NASA that no one has yet. At uni I used ACE/FASTRAN, which is a terrible program.
 
Yeah I have been instructed by the university to use Gambit to create the mesh file, then import that into FLUENT to study the fluid flow within a nozzle.

Also I was wondering is it possible to model the nozzle in ProEngineer and then export it into Gambit/Fluent, as ProE is a lot more user friendly than gambit
 
Yes you can import geometry like that but I'm not an expert on the topic. I am not a CFD guy and am going by what I know from the CFD guys I work with.
 
Are you doing a 2d or 3d model? Are you using a super computer or just a uni one?
 

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