openmc.ZCylinder¶
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class
openmc.
ZCylinder
(x0=0.0, y0=0.0, r=1.0, boundary_type='transmission', name='', surface_id=None, *, R=None)[source]¶ An infinite cylinder whose length is parallel to the z-axis of the form \((x - x_0)^2 + (y - y_0)^2 = r^2\).
Parameters: - surface_id (int, optional) – Unique identifier for the surface. If not specified, an identifier will automatically be assigned.
- boundary_type ({'transmission, 'vacuum', 'reflective', 'white'}, optional) – Boundary condition that defines the behavior for particles hitting the surface. Defaults to transmissive boundary condition where particles freely pass through the surface.
- x0 (float, optional) – x-coordinate of the center of the cylinder. Defaults to 0.
- y0 (float, optional) – y-coordinate of the center of the cylinder. Defaults to 0.
- r (float, optional) – Radius of the cylinder. Defaults to 1.
- name (str, optional) – Name of the cylinder. If not specified, the name will be the empty string.
Variables: - x0 (float) – x-coordinate of the center of the cylinder
- y0 (float) – y-coordinate of the center of the cylinder
- boundary_type ({'transmission, 'vacuum', 'reflective', 'white'}) – 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
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bounding_box
(side)[source]¶ Determine an axis-aligned bounding box.
An axis-aligned bounding box for surface half-spaces is represented by its lower-left and upper-right coordinates. For the z-cylinder surface, the negative half-space is unbounded in the z- direction and the positive half-space is unbounded in all directions. To represent infinity, numpy.inf is used.
Parameters: side ({'+', '-'}) – Indicates the negative or positive half-space Returns: - numpy.ndarray – Lower-left coordinates of the axis-aligned bounding box for the desired half-space
- numpy.ndarray – Upper-right coordinates of the axis-aligned bounding box for the desired half-space
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evaluate
(point)[source]¶ 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: \((x' - x_0)^2 + (y' - y_0)^2 - r^2\) Return type: float
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translate
(vector)[source]¶ Translate surface in given direction
Parameters: vector (iterable of float) – Direction in which surface should be translated Returns: Translated surface Return type: openmc.ZCylinder