@@MechTechSimulations Thank you but the problem is when i directly connect meshing to Fluent Setup nothing shows up. not even component tree properly shows it cannot find the meshed part at all. I have to manually export and import the mesh. Only than it works for some reason. I updated the graphics card but still the problem persists. I don't think it is a problem related to my graphics card but more like a problem with my installation itself as only if i import the mesh as an "*.msh" file it opens up.
If you apply solar radiation as heat flux directly in fluent, fluent takes that heat flux to calculate the surface temperature based on Del T, whereas solar heat flux is based on Del T^4….. that means, it will estimate the wrong surface temperature values on the surface… isn’t it?
I chose the SST k-omega model for its ability to handle complex flow and heat transfer in areas with flow separation, making it ideal for heat exchanger simulations. Other models like the k-epsilon for high-Reynolds-number flows or the RSM (Reynolds Stress Model) for more detailed turbulence could also be considered, depending on the specific requirements.
Good time sir I made the simulation the shell and helical tube with length of shell 112mm . The time of calculation is very long reached to 12 hour or more The model is k- epsilon This is correct that calculation time is long or not ? Can be reduce the calculation? With best regards
Even if we don't aim for very strict convergence criteria, the scaled residuals should at least converge to 10^-3, . If your mesh is too fine, the time taken for each iteration will be high. In that case, try increasing the mesh size and check the convergence of the results.
To convert kg/s to ml/min, multiply the mass flow rate by the fluid's density (kg/L) to get L/s. Then, multiply by 60,000 (since 1 L/s equals 60,000 ml/min). For water, simply multiply the kg/s value by 60,000 to get ml/min.
You're welcome! The facet average value of static pressure is not the same as the area-weighted average. The facet average is a simple arithmetic mean of the pressure values over the selected faces, while the area-weighted average takes into account the size of each face, giving more weight to larger areas. For most engineering applications, the area-weighted average provides a more accurate representation, especially when dealing with varying face sizes
Very good video. I have a question... Why you suppress the blades in the geometry configuration??? ...I thought you may suppress the cylindrical enclosure...since the cylindrical region is to indicate what will be set to a given RPM...
The purpose of suppressing the solid domain is to exclude it from the computation. Generally, we do not want to include solid domains in CFD analysis in most cases like this. Therefore, to remove the solid blade, we suppress it. The cylindrical domain, where the airflow exists, is mandatory for the computation
Synchromesh is also a constant mesh gearbox with an additional synchromesh cone. First, the male cone and the female cone come into contact. Then, the synchromesh ring engages. The synchromesh ring functions similarly to the dog clutch in a constant mesh gearbox.
When i m trying to import the structure from catia to ansys its showing error that " the selected file is of an unsupported or unfigured geometry type" . How to solve this error? Can u plzz help me with this ?
If you want to import geometry from other modeling software, you need to do CAD Configuration. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Y_QWgnX5ccE.html
I’m using solidworks to draw the turbine and then import into ansys. Then I follow ur step to do but can’t. I create the enclosure but it show an error (operation would result in non-manifold bodies).
There is a shortcut, in 4:10 you can factor the (-1+λ) into the expression (1-λ)(1-3λ+λ^2) -1+λ = 0 (1-λ)(1-3λ+λ^2) - (1-λ) = 0 (1-λ)(1-3λ+λ^2-1) = 0 (1-λ)(λ^2-3λ) = 0 That way, the three eigenvalues can be found momentarily and there is no need to solve a cubic equation and perform long division.
If that is a cylinder, we need to select axisymmetric instead of planar in Fluent's general settings. In 2D simulations, the mass flow rate is computed and reported in Fluent by considering the third axis as 1m by default. You can change this in the reference values if you have the third axis dimension.
Try setting up phase contours in Graphics and Animations, then create and define a Solution Animation under Calculation Activities. Preview and save the animation as a video by clicking Write/Record.
Hello sir, I'm making all the things same but my program gives me floating point error, what can I do about it? I tried to smaller and bigger mash sizes but it didnt solve.
@@MechTechSimulations I runned again without acceleration and it didnt give error, tried again with linear acceleration and it gave an float error message again
@@MechTechSimulations I tried without acceleration and it didnt give float error message. When I add acceleration it gives error whatever its linear or time related. And for extra information ım trying to work on 3D tanks.
Here are the steps to obtain the pressure at the outlet: Go to Reports, then Surface Integrals, select Average, followed by Average of Pressure. Choose the outlet boundary and click on Print. This will provide you with the average pressure at the outlet.
Unfortunately, as far as I know, ANSYS cannot calculate thermal conductivity on its own. Instead, we must input the thermal conductivity value obtained from experimental data or reliable sources like material databases. However, once we provide the thermal conductivity along with the heat generation rate, ANSYS can generate temperature distribution results across the entire domain.
Thank you so much for your kind words. I was actually considering creating videos with the latest versions already, so your reminder is greatly appreciated. I'll get to it soon.
Thanks for this example. I thought K-E cannot be used for the vortex shedding analysis and only LES or DES should be used. I need to run a case for vibration analyis and need to know the flucutatyion of the pressure the frequency. Could you explain if K-E can be used. As far as I remember only LES results can be used for the FFT etc.
Actually, it's my attempt to compute the frequency of flow-induced vibration. However, as you mentioned, there will definitely be differences between turbulence models. I've explored this in the video linked below. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-bWKuNh8G2II.html
Sorry for the delayed reply. You can simply set up a pressure outlet boundary condition on that surface if you only need an opening and want to monitor variables within the domain. However, if you're also interested in understanding what happens beyond the outlet, you'll need to extend the fluid domain outside as well.
