Volume rendering - Fire

Introduction

Fire is visualized using ParaView's volume rendering functionality. Unfortunately fire simulations are extremely large. Fortunately, we can use disk_out_ref.exo as a substitute dataset.

Note: Volume rendering is very resource intensive. It is possible to display a dataset using surface that chokes using Volume Rendering. The solution is to grab more nodes of your cluster (thus picking up more memory).

Note: Currently (3.6.2 and 3.8.0), volume rendering only works on one block at a time. Thus, before volume rendering multiple blocks, run the "Merge Block" filter. This should be fixed in a future version of ParaView.

Note: Hitting the <CR> key will close this window, which is not expected behavior.

• Start ParaView
• Open disk_out_ref.exo. Select all variables. Apply.
• Color by temperature.
• Representation by Volume Rendering.

Since this tutorial is for rendering fire, we need to make disk_out_ref.exo look like fire.

• Edit Color Map
• Choose Preset. Choose Black-Body Radiation. OK.
• Add a point on the color scale in the orange area, and another at the top of the black. See the Color Scale Editor below.
  • You can create a point on the color scale by clicking in the window.
  • You can select a point on the color scale by clicking on it.
  • You can move between points using the Tab and <SHFT>-Tab keys.
  • You can delete points using the delete key.

Acknowledgements

Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.