Ideal Gas Compression in an Actuating Piston

User: "Sivaprakash_V"
Sivaprakash_V
Altair Community Member
Updated by Sivaprakash_V

Hi Good day,

I am currently working on a CFD analysis of a cylinder and piston assembly, using the AcuSolve Ideal Gas Compression in an Actuating Piston tutorial from SimLab as a reference.

Following the tutorial, I have created the fluid domain and generated a table that defines the piston motion based on a mathematical equation. I plan to apply this motion as a translational mesh motion in the simulation.

image.png


Could someone please explain the steps shown in the image above?
Specifically, under the Nodes section:

  • Mesh Y-Displacement
  • Type: Linear
  • Mesh Motion: Piston
  • Curve Fit Variable: Y Reference Coordinate
  • X1: 10.0 m
  • Y1: 1.0 m
  • Y2: 0.0 m

What do these terms represent? Why is X1 set to 10.0 and Y1 to 1.0?



Thanks & Regards,
Sivaprakash.

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