Tutorial : GAMBIT - MODELING A THREE-PIPE INTERSECTION (3-D)

This tutorial employs “primitives”—that is, predefined GAMBIT modeling components and procedures. There are two types of GAMBIT primitives:

• Geometry

• Mesh

Geometry primitives are volumes possessing standard shapes—such as bricks, cylinders, and spheres. Mesh primitives are standard mesh configurations.

In this tutorial, you will use geometry primitives to create a three-pipe intersection. You will decompose this geometry into four parts and add boundary layers. Finally, you will mesh the three-pipe intersection and will employ a mesh primitive to mesh one part of the decomposed geometry. In this tutorial you will learn how to: 

• Create volumes by defining their dimensions
• Split a volume
• Use GAMBIT journal files
• Add boundary layers to your geometry
• Prepare the mesh to be read into POLYFLOW

The problem to be considered is shown schematically in Figure above. The geometry consists of three intersecting pipes, each with a diameter of 6 units and a length of 4 units. The three pipes are orthogonal to each other. The geometry can be represented as three intersecting cylinders and a sphere octant at the corner of the intersection. 

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CFD analysis of gas explosions vented through relief pipes [An article from: Journal of Hazardous Materials]
Study on inhalation region by means of CFD analysis and experiment [An article from: Building and Environment]
Flow and Losses in Regenerative Flow Compressors: Detail CFD analysis using Fluent