# Farfield

A farfield volume zone defines the outer boundaries of your computational domain. It establishes the limits where freestream conditions are applied and ensures proper flow development around your geometry.

# Available Options

Option Description Applicable
Type Method of constructing the farfield always
Method Method for determining farfield shape Type is Automated farfield

# Detailed descriptions

# Type

Setting allowing the user to choose between generating the farfield in the workflow and providing the farfield as a part of uploaded geometry.

Possible selections:

  • Automated farfield - Farfield generated by Flow360 around the geometry
  • User defined farfield - Farfield geometry provided by the user, has to be assigned to an appropriate boundary condition in Boundary conditions

# Method

Method of defining the size of an auto-generated farfield.

Possible selections:

  • Auto: Automatically determines appropriate farfield dimensions based on geometry, 100 times the maximum dimensions of the geometry
    • Generates a full sphere if geometry extends across Y=0
    • Creates +Y semi-sphere if geometry is entirely above Y=0
    • Creates -Y semi-sphere if geometry is entirely below Y=0
  • Quasi-3D: Creates a thin disk for quasi-3D simulations
    • Both sides of the farfield disk are treated as symmetric planes

💡 Tips
  • Automated farfield is generally preffered for aerospace applications
  • Automotive applicatons and internal flows usually require the User defined farfield method

❓ Frequently Asked Questions
  • How do I choose between Auto and Quasi-3D farfield methods?

    Use Auto for full 3D simulations and Quasi-3D for 2D or axisymmetric cases where the flow is primarily in one plane.

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