# Computational Fluid Dynamics ( And Visualization Thereof ) John T. Bell CS 526 at UIC 12 February 2004.

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Computational Fluid Dynamics ( And Visualization Thereof ) John T. Bell CS 526 at UIC 12 February 2004

What is CFD, and Who Cares ? Simply put, CFD is the calculation of properties of a flowing fluid. Practical problems may include energy flow, chemical reactions, phase changes, … Domain is often ( irregular ) 3D, plus time. Results may be scalar, but more often are n-D Relevant industries include automotive, chemical processing, aerospace, HVAC,...

Automotive Aerodynamics...

... And Interior Comfort...

... And Engine Conditions

Process Engineering

Aeronautics

NASA Ames’ Virtual Windtunnel

HVAC

VTK Examples

So How is CFD Calculated ?

Classic Differential Equations Navier-Stokes: Continuity: Cons. Energy:

Fourth Order Runge-Kutta

Conclusions Computational Fluid Dynamics is an important tool in many branches of science and engineering. Results are typically n-D, over 3-D plus time. CFD calculations require simultaneous solution of many sets of differential equations, typically involving 4th order Runge-Kutta in 3-D space. Visualization of CFD data is an important and challenging problem, requiring clever use of all available visualization tools and skills.

References Fluent Inc.: Http://www.fluent.com Schulz, Martin et. al.: “Interactive Visualization of Fluid Dynamics Simulations in Locally Refined Cartesian Grids”. IEEE, 1999. NASA: http://www.nas.nasa.gov/Research/Tasks/ applications.html and http://www.nas.nasa.gov/Research/ Reports/ Techreports/1992/HTML/RNR-92-013.html Schroeder et. al.: “The Visualization Toolkit, 3rd Ed.” SDSC: http://www.sdsc.edu/Publications/GCequations/ Welty, Wicks, & Wilson, “Fundamentals of Momentum, Heat, and Mass Transfer, 2nd Ed.”, Wiley, 1976. Press, William et. al.: “Numerical Recipes in C”.

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