CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

How do i verify my hypersonic CFD run ?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 2, 2023, 14:10
Default How do i verify my hypersonic CFD run ?
  #1
New Member
 
Jack
Join Date: May 2023
Posts: 1
Rep Power: 0
CFDXnoob008 is on a distinguished road
hello everyone,
Im trying to design a Hypersonic decelerator, for which I'm using a 2d geometry to try to find its coefficient of drag at various speeds so I can input those values in my code to find its decent profile through the atmosphere. PLEASE NOTE THAT IVE NEVER EVER DONE ANTHING AS COMPLEX AS THIS. ONLY BASICS SUCH AS AIRFOIL ANALYSIS AS SUCH.

now the problem is that when i run the simulation or calculate it , my residuals do not converge even after having all possible assistance such as high speed numerical and FMG initialization. This all is based on the fact that im using a seminar that i found on Ansys official website as a guide for the analysis, following steps that they suggested.

so now at Mach <5 its all good and perfect.

but as soon as i try to simulate Mach 10 flow, the solution for scaled residuals does not converge at all. although the drag and Cd reports converge and stabilize, but I've no way to verify if they are correct as there is no data to compare against. i mean the Cd value i get is 18.55 which i feel is absurd as Cd has to be between 0 to 1.

Ive attached screenshots of every step I've done till now, can anyone pls verify my cfd for me
https://imgur.com/a/3lhKMFe (the mesh)
https://imgur.com/a/AIa4Ela (Boundary layer near HIAD bottom)
https://imgur.com/a/2ncMqSk (setup)
https://imgur.com/a/krymxkv (solution obtained)


also i apologize if i come across as stupid, im really confused so what can i do ?
CFDXnoob008 is offline   Reply With Quote

Reply

Tags
drag coefficient, fluent 14.0, hypersonic flow, verify

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
hypersonic cfd free code??? inginer OpenFOAM 18 May 31, 2013 09:49
Hypersonic CFD nick.parziale@gmail.com Main CFD Forum 7 May 11, 2013 08:58
How to get an accurate CFD solution to aeroheating problem for hypersonic flows? Leining D Main CFD Forum 5 April 14, 2009 12:26
Which is better to develop in-house CFD code or to buy a available CFD package. Tareq Al-shaalan Main CFD Forum 10 June 13, 1999 00:27
public CFD Code development Heinz Wilkening Main CFD Forum 38 March 5, 1999 12:44


All times are GMT -4. The time now is 14:32.