openmc.Quadric

class openmc.Quadric(surface_id=None, boundary_type='transmission', a=0.0, b=0.0, c=0.0, d=0.0, e=0.0, f=0.0, g=0.0, h=0.0, j=0.0, k=0.0, name='')

A surface of the form \(Ax^2 + By^2 + Cz^2 + Dxy + Eyz + Fxz + Gx + Hy + Jz + K = 0\).

Parameters:

• surface_id (int, optional) – Unique identifier for the surface. If not specified, an identifier will automatically be assigned.
• boundary_type ({'transmission, 'vacuum', 'reflective', 'periodic'}, optional) – Boundary condition that defines the behavior for particles hitting the surface. Defaults to transmissive boundary condition where particles freely pass through the surface.
• b, c, d, e, f, g, h, j, k (a,) – coefficients for the surface. All default to 0.
• name (str, optional) – Name of the sphere. If not specified, the name will be the empty string.

Variables:

• b, c, d, e, f, g, h, j, k (a,) – coefficients for the surface
• boundary_type ({'transmission, 'vacuum', 'reflective', 'periodic'}) – Boundary condition that defines the behavior for particles hitting the surface.
• coefficients (dict) – Dictionary of surface coefficients
• id (int) – Unique identifier for the surface
• name (str) – Name of the surface
• type (str) – Type of the surface

evaluate(point)

Evaluate the surface equation at a given point.

Parameters:point (3-tuple of float) – The Cartesian coordinates, \((x',y',z')\), at which the surface equation should be evaluated. Returns:\(Ax'^2 + By'^2 + Cz'^2 + Dx'y' + Ey'z' + Fx'z' + Gx' + Hy' + Jz' + K = 0\) Return type:float