Ansys Fluent Erfahrungen

I have used Ansys Fluent for modeling fluid flows for aerospace applications. I particularly like the feature set that Ansys provides. It also has support for distributed computing architecture which has been very beneficial in meshing and processing complex one dimensional CAE problems.

There are multiple UI improvements with each product release. Keeping pace with the changes and new functionalities is a bit of a learning curve. The rendering of 3D heat maps and stress diagrams is a bit choppy with certain older generation GPUs.

used v19R2, did the basic CFD, however, meshing on a simple geometry such as rounded pipe, seemed like a hassle. So you tell me if there is even worth going forward.

Where do I start.
1) The customer support, is now directed to the ansys forum, which I am sure, some indians are doing a good job on it, however, its a very badly maintained source. The previous version of going to portal and looking for a pdf (assuming due to some blessing, it is available), was a better approach.

If you cannot open a file, becuase someone is trying to send a snapshot, then please find it in your heart to buy a better anti-virus software. I am sure such a big company such as ansys can open an attachment, if it cant get everyone through the ticketing system, which by the way, is also not very useful, or so late, that the user, ends interest, or endures to find a new method, which does not require the crappy customer support of Fluent.
I am guessing that is a win win for Ansys fluent anyways.

3) The ticketing system, never was useful, as I said, needed to couple fluent with python, for v19R2, and appraently, that feature is not made yet. These are the times I wished, my supervisors had agreed on Star-CCM+, instead of fluent.

4) If something has been discontinued, or will be discontinued, take it out from the list of radio buttons or drop down menus. It is simple software engineering basic.

5) Also, again, I wished, the customer portal, were open to more appropriate documentation when required. Putting up everything online in form of instructions manual was a bad decision. Also, i am pretty sure, you had not notice, that the website, opens slowly,

ANSYS Fluent is the greatest software for Computational Fluid Dynamics simulations. It comes with a number of add-ons that are incredibly useful for product research and development. Researchers and engineers could also customize the simulation by changing the input parameters needed to solve the problem under consideration (starting by creating geometry, then generating mesh, Setup the parameters, and extract results). One of its advantages is that it provides acceptable and satisfactory outcomes that are accurate and close to the experiment.

The software is difficult and requires a lot of understanding before starting up. You would first comprehend the relevant variables in order to achieve the required result. In addition, it's open source version has very limited number of cells/nodes. On the other hand, the premium version required a high-end computer (could be costly), take significantly longer to solve the problem and achieve the desired results.

The efficiency of its results make Ansys Fluent the most effective tool for solving computational fluid dynamics related problems. From geometry, through meshing, physics, solution and to results, the chronological order of the workflow makes Fluent easy to use, even for beginners. The fact that a user doesn't necessarily need to fully understand the governing equations required in the setup makes the learning curve less steep. A user with a deeper understanding however, can create and modify user defined functions to suit whatever solution that may be required.

There are minimum requirements to install and run Ansys generally but at times, even those minimum requirements seem to be incapable of a ensuring a smooth run. So it is prone to crashes and may require extremely long period of time to solve some complex problems. A high end computer might be required for such. Eventhough it is easy to use, a good knowledge of physics or engineering is usually required of the user to understand some processes. Also, the solver offers the user less control of the solving process as compared to some other tools.

As someone who used Ansys Fluent during my PhD studies for air quality, I found it to be a powerful but complicated simulation software. One of the best things about Fluent is that it allows you to create your 3D geometry using other software and save it in a format that Fluent can read, saving you the trouble of learning how to model in different software. The results provided by Fluent are excellent and provide a wealth of data for analysis, including animations and various plots.

While it has a user-friendly interface, it takes a lot of time to learn and is not very intuitive. I highly recommend trying some tutorials before diving in. Also, running complex simulations with a mesh of millions of elements requires a powerful cluster and can take a long time. The results are great, however, it's not always easy to get there. Errors often appear during the learning process, but the software has a strong community of users, open forums, and assistance to rely on.

I have been using Ansys Fluent for some time now, and I am very impressed with its capabilities. As someone who regularly deals with multiphase flow simulation and critical flow of gas through tight restriction, I have found this software to be particularly useful.One of the things I appreciate most about Ansys Fluent is its reliability. The software has consistently delivered accurate results for a variety of complex simulations. Additionally, the documentation is complete with well-described equations, which has made it easy to set up and solve even the most challenging problems.Ansys Fluent is especially helpful for simulating multiphase flows, such as gas-liquid interactions, and for modeling critical flow of gas through tight restrictions. It allows for accurate modeling of these systems and provides valuable insight into their behavior and performance.Another advantage of using Ansys Fluent is its versatility. The software is capable of modeling a wide range of physical phenomena, including fluid dynamics, heat transfer, combustion, and more. This makes it a valuable tool for engineers, researchers, and scientists working in a variety of fields.

One challenge I have encountered is that errors can be confusing, with little explanation provided. When an error occurs, it can be difficult to determine what caused it, and there may be limited guidance available to help troubleshoot the issue. This can be frustrating for users who are trying to identify and fix problems in their simulations.Additionally, I have found that some of the software's features can be less intuitive than others. While Ansys Fluent is generally user-friendly, there are some aspects of the program that may require additional research or support to fully understand and utilize.

The software, in the Workbench functionality, allows to decide the type of module to use depending on the physics to be solved. In particular, among the different choices for the fluid dynamics part, there is Fluent, a Finite Volume solver. It is very intuitive to import external CADs into the geometry module and prepare the mesh accordingly. The internal CAD is also very functional and, for complex components, it is useful for cleaning geometry. The preparation of the solver is also very intuitive. The tree diagram allows to not make mistakes. Very good package for displaying the results data, which is intuitive and easy to use.
Among the best features that have been implemented in the latest versions is the "Named Function": a tool inside the solver part that allows to define mathematical functions, and much more, in order to bypass the use of UDFs which is always a bit difficult and not easy to understand.
Exporting data is very easy since you prefer to use another software viewer or perform numeric post-processing operations with Matlab as an example.

The hardest part of the program is the definition of the mesh. if you work with simple geometries you will not encounter particular problems, but since you want to use polygonal meshes for complex geometries, you have to use another package that integrates the mesh with the solver in a different way. The use of different packages for the management of the single parts makes the program heavy, which is slow in the opening and closing phases of the single packages.
Another slightly critical point is the definition of the parameters. It is not easy to understand and you have to manage them through the Workbanch. This is not a particular problem once you are familiar with the program.

In my opinion ANSYS Fluent is the best software for CFD simulations. It has several add-ons that are extremely helpful for design and product development. It also offers engineers and researchers a lot of flexibility in terms of equations (flow, energy, and turbulence) and boundary conditions to setup the simulation as customizable as possible.

What I don't like very much about ANSYS Fluent is the file management. I have had a hard time finding the files I save specially when the software crashes. Hopefully, with the newest updates ANSYS will fix these bugs.

The price is good and there is a good deal of physical model functionality from low to hypersonic.
Significant V&V has been done.
I like the Fluent AERO capability that is being rolled out to do sweeps of AoA, Mach, etc.

The software is very difficult to apply - significant amount of time needs invested in meshing. Other solvers (e.g. CDD++) are much easier to run successfully (i.e. quickly get solve an analysis). Find that other colvers are more capable numerically of running in the hypersonic regime.
Fluent capability of integrating with Pointwise meshes that I receive from my customer is not great.
Sometimes the technical support is good, other times can be a bit distant. Support received from other vendors is more engaged and actively trying to help (i.e. hands on).

Ansys fluent provides the opportunity to easily solve multiple physics problems in different physics situations with flow simulations. It is especially solution-oriented in examining the interaction of multiphysical flows with each other. FSI contributes to the strength analysis of flow-borne structures by transferring the values of the flow results (such as temperature, pressure) to the structural side for the solution.

Since Fluent software depends on the geometry to form the finite element mesh structure of the flow volume, it takes a long time to clean the geometries.

It allows you to assess a lot of situations with different level of details. The clients appreciate the output and it is easy to understand and visualise the results

It requires training and good understanding of the physics otherwise it can lead to wrong conclusions. The design modeller has some issues and it’s easier to use other tools for modelling.

Fluent is a very complex software with various customizable parameters. Results can be very elaborate or simple. From mass, heat, and energy transfer, to temperature, velocity, and pressure gradients, Ansys provides a wide range of high value results for engineers to analyze and take educated decisions.

The complexity can be boggling for users, if the user is not educated on the subject, the adjustable variables are numerous and require previous study to make the best of simulations.