OpenVSP- Supersonic capabiities

Anirudh Manoj

unread,

Nov 25, 2021, 6:51:22 PM11/25/21

to OpenVSP

I wish to do an analysis of a delta wing on openvsp, in the supersonic flow domain Mach=2. I want to plot the Induced drag and lift distribution slope. Is this possible in openvsp?

If it is not, could anyone suggest a Vortex lattice/panel method software that can be used for supersonic wing analysis?

Kind regards

Anirudh

Rob McDonald

unread,

Nov 25, 2021, 11:32:52 PM11/25/21

to ope...@googlegroups.com

VSPAERO should do what you ask.

Not sure what you mean by lift distribution slope -- usually we look at the lift curve (vs. alpha), the slope of the lift curve (vs Mach), or the lift distribution.

The lift distribution slope is a thing -- I would probably call it the additional lift distribution, but that probably isn't what you want.

Use the VLM mode, give it a go. Ask if you have trouble.

Rob

--
You received this message because you are subscribed to the Google Groups "OpenVSP" group.
To unsubscribe from this group and stop receiving emails from it, send an email to openvsp+u...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/openvsp/30e777b4-057d-4d20-a119-c5bbea1bafddn%40googlegroups.com.

Anirudh Manoj

unread,

Nov 26, 2021, 10:06:12 AM11/26/21

to OpenVSP

Hi Rob,

It was a typo, I wish to just get the plots of wing lift distribution along the span and induced drag along the span, for a delta wing at Mach 2.

Regards

Anirudh

gu mamang

unread,

Dec 5, 2021, 10:07:20 PM12/5/21

to OpenVSP

The governing eqution in VLM is not N-S equation. actually it is a simplified equation by ignoring the viscosity force and inertia force.

it is not impossible for VLM to solve high Ma( Ma>0.3) case.

Rob McDonald

unread,

Dec 6, 2021, 12:52:41 AM12/6/21

to ope...@googlegroups.com

That is incorrect.

The VLM formulation also has an extension to linearized supersonic flow. It is not valid in the transonic region, but is valid for fully supersonic flow.

Many potential flow codes do not support supersonic flow, but VORLAX and PANAIR are two others that you can research that do.

Rob

--

You received this message because you are subscribed to the Google Groups "OpenVSP" group.
To unsubscribe from this group and stop receiving emails from it, send an email to openvsp+u...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/openvsp/8d43c0ed-3e5c-4414-acbf-6eb452018f4en%40googlegroups.com.

Reply all

Reply to author

Forward