[CFD] Rhie & Chow Interpolation (Part 2): Staggered Grids

Fluid Mechanics 101
Fluid Mechanics 101
12.3 هزار بار بازدید - 3 سال پیش - An introduction to staggered grids
An introduction to staggered grids in Computational Fluid Dynamics (CFD). Staggered grids are used to avoid chequerboard oscillations, which arise in pressure-based solvers for incompressible flow. The following topics are covered: 1) 02:30 What is a collocated grid? 2) 04:19 What is a staggered grid? 3) 11:40 How can staggered grids avoid chequerboard oscillations? 4) 18:14 What are the disadvantages of staggered grids? 5) 30:54 What are the advantages of staggered grids? #staggeredGrid #RhieChowInterpolation #fluidmechanics101 ============================================ Some useful references ============================================ 1. Harlow and Welch (Original Staggered Grid Paper) Harlow and Welch, 'Numerical Calculation of Time-Dependent Viscous Incompressible Flow of Fluid with Free Surface' The Physics of Fluids, Volume 8, 1965 dx.doi.org/10.1063/1.1761178 2. Artifical Compressibilty Method A. Chorin, 'A numerical method for solving incompressible viscous flow problems', Journal of Computational Physics Volume 2, Issue 1, August 1967, Pages 12-26 www.sciencedirect.com/science/article/pii/00219991… 3. Versteeg & Malalasekeera, 'An Introduction to Computational Fluid Dynamics: The Finite Volume Method', Longman Scientific & Technical, 1995. www.amazon.co.uk/Introduction-Computational-Fluid-… 4. Ferziger & Peric, 'Computational Methods for Fluid Dynamics', 3rd Edition, Springer-Verlag, Berlin, Heidelberg, New York, 2002. www.amazon.co.uk/Computational-Methods-Fluid-Dynam… 5. MFIX Manual mfix.netl.doe.gov/doc/mfix-archive/mfix_legacy_man… ============================================ Want to learn more? ============================================ Grab a copy of my CFD Fundamentals Course (for beginners): www.udemy.com/course/computational-fluid-dynamics-… Learn how to write your own CFD code in MATLAB and python (for intermediates): dr-aidan-wimshurst-s-school.teachable.com/p/the-si… Learn how I draw my figures and diagrams in Inkscape (for everyone): dr-aidan-wimshurst-s-school.teachable.com/p/inksca… ============================================ Did you like the video? ============================================ Download the lecture slides from my website: www.fluidmechanics101.com/pages/lectures.html Buy me a coffee to say thanks: www.buymeacoffee.com/NKEZrhvg0 Support the channel on Patreon (and get useful extras for your CFD studies): www.patreon.com/fluidmechanics101 ============================================ Donations: ============================================ 1) PayPal 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.
3 سال پیش در تاریخ 1400/06/02 منتشر شده است.
12,387 بـار بازدید شده
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