Email Print Share

Multilouvered Fin

A small section of a multilouvered fin and the 3-D flow features around it

Whether in airplane engines or power plants, turbine blades are often subjected to extremely high temperatures. The blades are cooled internally with cold air flowing through serpentine channels. To enhance the rate of cooling, roughness elements or ribs are place in the channels to generate turbulence. This image shows a small section of a multilouvered fin and the 3-D flow features around it. Fins increase the surface area and rate of heat transfer in a system, and multilouvered fins--which are often used in compact heat exchangers--enhance mixing and heat transfer. Instantaneous streamtubes illustrate a coherent vortex jet and its vorticity signature on an x-plane passing through the louver. The software used in producing these simulations was developed under a National Science Foundation grant. [Image 3 of 3 related images. See Image 1.]

More about this Image
This simulation was created by Danesh Tafti and Randy Heiland of the National Computational Science Alliance (NCSA), University of Illinois (UI) at Urbana-Champaign, using GenIDLEST computational fluid dynamics software and NCSA VisBench, a visualization system. Research represented in the visualization of the multilouvered fin is supported by the Air Conditioning Refrigeration Center at UI-Urbana-Champaign.

Credit: Danesh Tafti and Randy Heiland, University of Illinois at Urbana-Champaign; courtesy NCSA

General Restrictions:
Images and other media in the National Science Foundation Multimedia Gallery are available for use in print and electronic material by NSF employees, members of the media, university staff, teachers and the general public. All media in the gallery are intended for personal, educational and nonprofit/non-commercial use only.

Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation. Additional information about general usage can be found in Conditions.

Also Available:
Download the high-resolution JPG version of the image. (486 KB)

Use your mouse to right-click (Mac users may need to Ctrl-click) the link above and choose the option that will save the file or target to your computer.