CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Pressure Explosions and Non-Reflecting Inlets

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   July 22, 2023, 06:15
Default Pressure Explosions and Non-Reflecting Inlets
New Member
Jonathan Adams
Join Date: Apr 2023
Location: Adelaide, South Australia
Posts: 3
Rep Power: 3
j.adams is on a distinguished road
Hello all,

I'm trying to model an inlet in supersonic flow that will not reflect waves, and I've been encountering a very frustrating glitch I'm hoping someone could share some insight on.

I've been using a waveTransmissive boundary condition which I've configured to inject hydrogen at the right T, p, U. The problem is when high pressure gas meets the boundary, and blocks the injection of hydrogen, an 'explosion' occurs from that point:

The pressure and pressure both go totally out of control, and their values only climb. The origin is the concentration of pressure that starts appearing in (2). Is this the boundary? I've only ever read of waveTransmissive being used as an outlet, but I don't know of any other options.

Does anyone know why that happens, or any way of solving it? Any insight would be welcome.

Attached Images
File Type: png detonation.png (110.3 KB, 12 views)
j.adams is offline   Reply With Quote


boundary, boundary condition, openfoam, reflective, wavetransmissive

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 08:58.