AnsweredAssumed Answered

Wing not seeing any vortex generation

Question asked by Harry Karmel on Mar 27, 2019
Latest reply on Mar 28, 2019 by Harry Karmel

Hi all,

 

To start off, I am a beginner when it comes to CFD to please excuse me if I've made any stupid/simple mistakes. However I haven't found any tutorials online for this so I've come here.

I've downloaded a (737-800) wing from GrabCAD and was putting through the Flow Simulation; I'm looking for vortex generation off the wing tip, though was only seeing clean airflow. I've tried using a cut plot for turbulence viscosity on the wingtip but again, it just showed up clean airflow. My concern is that Solidworks isn't simulating it because these vortices are formed by the pressure differential between the two sides of the wing rather than just from being an object in airflow.

I then tried adding a very rudimentary winglet to see if the strake at the trailing edge generated any vortices, but again, clean airflow. I know SW does have the capability to generate vortices (as I've seen in multiple posts/threads) but can it do so when the vortex generation is due to pressure differential, and if so, what do I need to do in order to display it?

 

Many thanks

 

 

My settings were:

"External flow" selected

"Exclude surfaces without flow cavities" selected

Gas: Air

Speed: 144m/s (~300kts)

Temperature: 255K (simulating high altidtude)

Turbulence Viscosity: 100%

 

If you need any more details on my configuration just let me knwo as these are the only items off the top of my head that I know I selected.

Attached are images of what I'm seeing - the clean airflow, with no vortex generation.

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