Hello, I am creating a very simple wing windtunnel test with the NACA0009 profile with a 10° angle of attack. The material is selected to be seawater because the model will be used in the ocean. I have a couple of problems. Here below is an image of the model. First of all, what would you suggest …

Hi there! As a general tutorial I would recommend you have a look at this one right here: Session 1 of CFD Master Class - just to get a little bit “warm” :slight_smile: It also helps if you share your project link with us so we can see what is going on inside of your project, the BC (boundary cond…

Hey @ThorkellH , Regarding the initial conditions of k and omega, I usually use this tool .

Hello Jousefm! Thank you for your reply. Here is the link to the project: https://www.simscale.com/workbench/?pid=1167922557405867888&rru=2b26ff0e-6bd7-46a4-a5fe-8bbd3cc2b26e&ci=15626480-dc30-415c-9e84-b9e93ef331cf&ct=CONVERGENCE_PLOT&mt=SIMULATION_RESULT I will look at the master class tutorial! …

Hello Mr. PauloSantos! Thank you for your reply. I am simulation a wing being dragged in the ocean at a constant speed of 1.15 m/s. The wing has a length of 2.2 meters but I am using symmetry so the the length I use in the model in Simscale is 1.1m. The kinematic viscosity of seawater at 3° C is a…

Hey! In terms of reference length, I noticed that you’re using the wing length. Usually, the value adopted for this parameter is the chord. About turbulence intensity, to adopt the value based on the Reynolds Number use to be a good approximation. That is, you can use the classification of very lo…

Thank you so much! I will use chord length from now on. I will use the Reynolds number to set the classification.

@jousefm & @paulosantos I watched the Master class you recommended @jousefm and also the numerical validation master class. The tutor talked about creating a webinar about turbulence modeling but I can’t seem to find it. Do you know if it was held? Because I would love to watch it. One question re…

You can use both. Suppose if you use the pressure outlet as 0, the software calculates the pressure inlet as X. If you change the pressure outlet to 1500, the pressure inlet changes to 1500 + X. That is, the pressure gradient is the same. Once the flow behaviour depends on the pressure gradient, the…

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My object looses its faces, cant assign wall BC to object

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jousefm July 7, 2020, 10:05pm 4

Here is also a useful post: Defining Turbulent Boundary Conditions !

Best,

Jousef

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