# Aerodynamics of Delta Wing

**URL:** https://www.simscale.com/forum/t/aerodynamics-of-delta-wing/96766
**Category:** Project Support
**Created:** [February 28, 2023, 8:32pm UTC](https://www.simscale.com/forum/t/aerodynamics-of-delta-wing/96766 "2023-02-28T20:32:21Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![kaany](https://www.simscale.com/forum/user_avatar/www.simscale.com/kaany/32/57613_2.png) [@kaany](https://www.simscale.com/forum/u/kaany)
#### Post date: [February 28, 2023, 9:20pm UTC](https://www.simscale.com/forum/t/aerodynamics-of-delta-wing/96766/2 "2023-02-28T21:20:01Z")

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Hello Liam,

My first recommendation is to use symmetry boundary condition by splitting the flow domain with respect to XZ plane, unless you will have a side slip flow. This will help you save significant amount of resources. Second recommendation, start with a mesh that is as coarse as possible, then start adding each refinement one by one. This way it will be easier to troubleshoot the error. You can even perform a [mesh independency study](https://www.simscale.com/knowledge-base/mesh-sensitivity-cfd/).

Some other remarks: you may want to consider enlarging your far field geometry, and this will help flow to develope properly. Looking at the vehicle, please also be aware that [Incompressible simulation](https://www.simscale.com/docs/analysis-types/incompressible-fluid-flow-analysis/) type is supported for [Mach numbers](https://www.simscale.com/forum/t/what-is-incompressible-flow/70493) that are up to 0.3. In case you need a higher speed, you may want to switch to compressible simulation type. [Compressible simulations](https://www.simscale.com/docs/analysis-types/compressible-fluid-flow-analysis/) should also give stable results with Mach numbers that are up to 0.6-0.7. (before the shocks are generated on wing surfaces.)

Hope these are helpful,  
Kaan.

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