In today's post, I would like to show you a tutorial on heat transfer through partitions. Thanks to such an analysis, we are able to determine the insulation performance of a building or device. We are also able to determine the size of thermal bridges in the analyzed geometry.
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| Thermal analysis of baffles model in Ansys Fluent |
In today's post, I would like to introduce you to the theory of turbulence. It is important to know the basic issues of fluid mechanics because thanks to this we are able to verify our assumptions and simulation results.
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| Fluid flow mechanics |
Today I would like to introduce you the straight 12 steps of CFD Analysis Modeling in Ansys Fluent. With these clues, you are able to model 90% of the problems of fluid mechanics.
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| 12 steps of CFD modelling in Ansys Fluent |
In today's post, I would like to show you a classic tutorial with which beginners in CFD modeling should start. It is an analysis of the gas flow around the cylinder based on one laminar flow model.
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| Laminar flow over cylinder in Fluent |
In today's post, I would like to introduce you to a simple tutorial on the phenomenon of melting material. Our hero will be wax which we will melt with the help of a given heat flux. Of course, in Ansys Fluent we can simulate both melting and solidification.
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| Melting a wax in Ansys Fluent |
You've often wondered what could be the reason why your simulation crashes and an overflow error pops up. Today I would like to introduce you seven tips on what could be causing this error and how to deal with it.
Very often we need to define a given area / zone / separated fragment with one variable. For example, it could be the average temperature of the model's cross-section as a function of time. For this type of operation, the function of defining your own variables from the level of postprocessing is very useful.
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| Own Variables in Postprocessing in Ansys |
An important element of the analysis is the ability to define variable material properties depending, for example, on temperature. The Ansys Fluent program offers many options that will allow us to model the material in this way. One such feature is Piecewise Linear.
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| Table definition by Piecewise Linear Option in Ansys Fluent |
In today's episode of Radiator Game I would like to present you a thermal analysis of a room for walls insulated in a modern way, i.e. with polystyrene and cellular concrete. Of course, we will perform the simulation using the virtual layers method on the boundary condition of the model walls.
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| Modern Walls Analysis in Ansys Fluent |
A very interesting option in post-processing in Ansys is the generation of 3D distributions that can be easily done using the IsoSurfaces function. We can distribute any variable by defining ranges of values of different sizes. The entire graphic design of the generated distribution also depends on us. When it comes to IsoSurfaces, we have a very wide range of modular possibilities with this function.
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| Velocity 3D Distribution of Bullet Fly |
In the second part of Radiator Game I would like to show you a different approach to modulating insulation on walls or heat flow resistance on windows using defined virtual layers in Ansys Fluent. In this regard, this program offers many more possibilities than the good old CFX.
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| Radiator Game with old construction wall |
In today's post I would like to show you how to easily and quickly export data from Report Definitions about your defined monitors in Ansys Fluent.
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| How to export report definitions from Ansys Fluent to spreadsheet |
In today's post and a few more, I will introduce you to the FEA modeling of CHT analysis in Fluent, a very common phenomenon, which is heating a room with a radiator. In the first part, we will determine the heat losses on the walls of the building with very simple dependencies and we will perform a preliminary CHT analysis of heating the room with a radiator.
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| 3D Temperature distribution in room with radiator and window |
In today's post, I would like to show you a tutorial on how to model a bullet flight in Ansys Fluent. Due to the earlier post where the bullet was modeled in the SimScale software, it will be an interesting comparison, especially when it comes to gas velocity distributions.
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| Comparision of velocity distribution on Bullet Fly Fluent/ SimScale |
Today I would like to introduce you to the CHT simulation tutorial in CFX. This is the missing link to the previous two entries. In CFX, CHT analysis is defined a bit differently than in Fluent.
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| CHT Analysis in CFX |
As I mentioned in the previous post, in the next one I will deal with a detailed description of the defined analyzes in CFD Ansys programs. First, I will provide a step-by-step tutorial on CHT analysis modeling in Fluent.
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| Meshing for Fluent CHT Analysis |
Today I would like to present what differences in the obtained results can be expected in the two leading CFD programs from Ansys. It should be noted that most of the analysis settings (both for CFX and Fluent) remained in the default positions. Especially to test the differences, I chose the type of CHT analysis (conjugate heat transfer), thanks to which it is possible to analyze a wide range of output data.
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| Fluent vs CFX |
In many analyzes, we want our mesh not to be too large and at the same time fit into the general rules of CFD discretization. Then it is worth using the definition of the size of the finite elements in the zones of the geometric model that are of interest to us. The Element Size function is used primarily for this type of definition.
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| Discretized model with general CFD rules |
