Hello everyone,


I have questions about the calculation of circumferential angles circA by TCAE.


I have understood that, if a surface is oriented in the radial direction, circA on this surface will be the angle between the tangent and the velocity in the radial/tangential plane. According to graphical representation of the manual, circA shoud be positiv when the projection of the velocity in the radial/tangential plane points out (of the cylinder in the picture), and negativ when it points in.


Let's imagine that we are on a surface radially oriented where some back flow occurs and that the absolute velocity has a circA > 90° when there is no back-flow. In most of the cells of the surface, circA points out of the cylinder (90° < circA < 180°), but when back-flow occurs, circA points in the cylinder (-180° < circA < -90°). Thus, there are positiv and negativ values of circA at the same time, isn't it ? Therefore, because the circA are either > 90° or < -90°, in the in the interfaces-final.csv file in simulationRun1/TCFD/stationary/postProcessing/surfaceName/0/ folder, it seems to me that surface averaged value of circA is distorted.

I had this reflection because I find particularly high values of circA on some surfaces of my simulations.

Could someone confirm my interpretation ? Or explain me why it isn't true ?

Besides, does someone know how to visualize circA angles on Paraview after a calculation ?


Thanks in advance !


Zacharie

TCAE module selection buttons have disappeared. How to restore them?

Thanks in advance.

~ David

Evidently I've clobbered my TCAE installation because the module selection buttons are now missing. Re-installing TCAE had no effect. How to restore them? Thanks in advance.

~ David

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Hello sir

i had gone through your webinars and various papers. recently i had read your published information regarding <TCAE-CFDSUPPORT-ACOUSTIC-BENCHMARK-PROPELLER-DJI9450> . I want to try simulation on same propeller can you please provide me cad model for dji9450 propeller that you had used in Ur simulation.

 THANK YOU

What is your recommended tool flow from Solidworks to TCAE that preserves surface names (inlet, outlet, walls etc) ?

My understanding is that unfortunately Solidworks does not preserve surface names when exporting the model as an STL file and exporting surfaces as separate STL files will produce non-conformal vertices.

Does one need to go through a third-party mesher ? I believe the Solidworks .step export preserves surface names. Is the recommended tool flow to go through a package such as Salome to create separate (but conformal) stl surface meshes ?

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As always. We're one email away!

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Hi everyone !

It's my first post here and I have a few questions on post-processing's manipulations and on variables' meaning :

1) How can I get the surface areas of the components' interfaces on TCAE (Paraview interface) or in the calculation case's folders ?

2) The TCAE user manual indicate that here are 2circumferential angles : the axial and the radial circumferential angles. To analyse my data, I need to extract the radial circumferential angle. However, withe the option 'calculateAngles on' in .../stationary/system/interfaces.fun, I only get one circumferential angle : circAng. How can I know which one is it (radial or axial) ? Or a mix of both ?

3) How is the mass flow rate calculated on the interfaces, with the absolute speed or with the flow speed (the radial speed for the mass flow at the outlet of a centrifugal impeller for example) ?

I hope someone will be able to help me on these topics... Thanks in advance !

Axial Fan Stage Simulation CFD + FEA & FSI, Material Stress, Blade deformation, and much more by TCAE.

Introducing Axial Fan Simulation CFD + FEA & FSI software by TCAE!

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