[CFD] The Courant (CFL) Number
48.2 هزار بار بازدید -
4 سال پیش
-
An introduction to the Courant
An introduction to the Courant number in modern Computational Fluid Dynamics (CFD) codes. The following topics are covered:
1) 2:07 How is the Courant Number calculated in 1D?
2) 5:41 How is the Courant Number calculated for general 3D cells?
3) 17:21 What are the recommended values of Courant Number in CFD?
4) 19:51 How does adjustable time stepping work?
#CourantNumber #fluidmechanics101 #cfd
==============================================
Some useful references:
1) The Original Paper by Courant, Friedrichs and Lewy (1928). The paper is in German so may be difficult to read!
http://www.digizeitschriften.de/dms/i...
2) CFD Online Discussion of Courant Number in OpenFOAM
https://www.cfd-online.com/Forums/ope...
3) CFD Online Discussion of Adjustable Time Stepping
https://www.cfd-online.com/Forums/ope...
============================================
Want to learn more?
============================================
Grab a copy of my CFD Fundamentals Course (for beginners):
https://www.udemy.com/course/computat...
Learn how to write your own CFD code in MATLAB and python (for intermediates):
https://dr-aidan-wimshurst-s-school.t...
Learn how I draw my figures and diagrams in Inkscape (for everyone):
https://dr-aidan-wimshurst-s-school.t...
============================================
Did you like the video?
============================================
Download the lecture slides from my website:
https://www.fluidmechanics101.com/pag...
Buy me a coffee to say thanks:
https://www.buymeacoffee.com/NKEZrhvg0
Support the channel on Patreon (and get useful extras for your CFD studies):
Patreon: fluidmechanics101
============================================
Donations:
============================================
1) PayPal
https://www.paypal.me/fluidmechanics101
==================================
Disclaimer
==================================
The methods, algorithms, equations, formulae, diagrams and explanations in this talk are for educational and demonstrative purposes only. They should never be used to analyse, design, accredit or validate real scientific / engineering / mathematical structures and flow systems. For such applications, appropriate trained, qualified and accredited (SQEP) engineers / scientists should be consulted along with the appropriate documentation, procedures and engineering standards. Furthermore, the information contained within this talk has not been verified, peer reviewed or checked in any way and is likely to contain several errors. It is therefore not appropriate to use this talk itself (or any of the algorithms, equations, formulae, diagrams and explanations contained within this talk) as an academic or technical reference. The reader should consult the original references and follow the verification and validation processes adopted by your company / institution when carrying out engineering calculations and analyses. Fluid Mechanics 101 and Dr. Aidan Wimshurst are not accountable or liable in any form for the use or misuse of the information contained in this talk beyond the specific educational and demonstrative purposes for which it was intended.
1) 2:07 How is the Courant Number calculated in 1D?
2) 5:41 How is the Courant Number calculated for general 3D cells?
3) 17:21 What are the recommended values of Courant Number in CFD?
4) 19:51 How does adjustable time stepping work?
#CourantNumber #fluidmechanics101 #cfd
==============================================
Some useful references:
1) The Original Paper by Courant, Friedrichs and Lewy (1928). The paper is in German so may be difficult to read!
http://www.digizeitschriften.de/dms/i...
2) CFD Online Discussion of Courant Number in OpenFOAM
https://www.cfd-online.com/Forums/ope...
3) CFD Online Discussion of Adjustable Time Stepping
https://www.cfd-online.com/Forums/ope...
============================================
Want to learn more?
============================================
Grab a copy of my CFD Fundamentals Course (for beginners):
https://www.udemy.com/course/computat...
Learn how to write your own CFD code in MATLAB and python (for intermediates):
https://dr-aidan-wimshurst-s-school.t...
Learn how I draw my figures and diagrams in Inkscape (for everyone):
https://dr-aidan-wimshurst-s-school.t...
============================================
Did you like the video?
============================================
Download the lecture slides from my website:
https://www.fluidmechanics101.com/pag...
Buy me a coffee to say thanks:
https://www.buymeacoffee.com/NKEZrhvg0
Support the channel on Patreon (and get useful extras for your CFD studies):
Patreon: fluidmechanics101
============================================
Donations:
============================================
1) PayPal
https://www.paypal.me/fluidmechanics101
==================================
Disclaimer
==================================
The methods, algorithms, equations, formulae, diagrams and explanations in this talk are for educational and demonstrative purposes only. They should never be used to analyse, design, accredit or validate real scientific / engineering / mathematical structures and flow systems. For such applications, appropriate trained, qualified and accredited (SQEP) engineers / scientists should be consulted along with the appropriate documentation, procedures and engineering standards. Furthermore, the information contained within this talk has not been verified, peer reviewed or checked in any way and is likely to contain several errors. It is therefore not appropriate to use this talk itself (or any of the algorithms, equations, formulae, diagrams and explanations contained within this talk) as an academic or technical reference. The reader should consult the original references and follow the verification and validation processes adopted by your company / institution when carrying out engineering calculations and analyses. Fluid Mechanics 101 and Dr. Aidan Wimshurst are not accountable or liable in any form for the use or misuse of the information contained in this talk beyond the specific educational and demonstrative purposes for which it was intended.
4 سال پیش
در تاریخ 1399/06/02 منتشر شده
است.
48,297
بـار بازدید شده