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Next: The main procedure Up: Neutronics Implementation Previous: Overview Contents Index

Arrangement of source code--Contents of the different modules

As stated earlier the source code is divided up in different parts, the so-called modules. Every module holds a group of similar functions. At present the source has 5 modules besides the main source code collected in the file project.c and these are shown below

.: neutroni.c: Main module which contains functions specific to the neutronics computations.
> Generation of a computational grid suitable for the neutronics calculations. > Performs a linear interpolation in an one dimensional table of reflector cross sections (see section 3.5.7). > Performs a linear interpolation in a two dimensional table of fuel cross sections (see section 3.5.8). > Calculate the non-zero block matrices in the eigenvalue problem, ie calculate the matrices B and C in (1.91). > Reduces all steplength in the computational grid, h_k, by a factor of 2. > Read a reflector cross section set. > Read a fuel cross section set. > Read a two dimensional table of fuel cross section sets. > Read a "table" for the bottom reflector. > Read an one dimensional table of reflector cross section sets. > Set up all variables for the neutronics calculation. > Read and parse the input file. > Calculate the axial power distribution (in the shape of a linear heat generation rate at node k, q_k') in the reactor core. > Main function which performs all actions for the neutronics computation.
.: memalloc.c: Functions related to dynamically allocated arrays.
> Function which is called when an allocation error is encountered. > Allocate a vector of double type elements. > Allocate a matrix of double type elements. > Allocate a vector of matrices with elements of double type. > Free memory occupied by a vector of double type elements previously allocated. > Free memory occupied by a matrix of double type elements previously allocated. > Free memory occupied by a vector of matrices with double type elements previously allocated.
.: io.c: Functions related to general input and output.
> Function called when a file I/O error is encountered. > Write a vector of double type elements to screen. > Write a matrix of double type elements to screen. > Write a vector of matrices with double type elements to screen. > Write a vector of double type elements to a file. > Write a matrix of double type elements to a file. > Write a vector of matrices with double type elements to a file. > Read a vector of double type elements from a file. > Read a matrix of double type elements from a file.
.: mathlib1.c: Functions which perform mathematical operations to arguments of vector and matrix type (all numerical elements are in double precision).
>
Addition of two square matrices.
>
Subtraction of two square matrices.
>
Multiplication of two square matrices.
>
Multiplication of a scalar by a matrix.
>
Multiplication of a square matrix by a (column) vector.
>
Addition of two vectors.
>
Subtraction of two vectors.
>
Multiplication of a scalar by a vector.
>
Multiplication of a square matrix by a diagonal matrix.
>
Multiplication of a diagonal matrix by a square matrix.
>
Multiplication of a diagonal matrix by a vector.
>
Performs Gaussian elimination on a square matrix.
>
Inverts a square matrix using simple Gaussian elimination.
>
Solves a block-tri-diagonal system of equations.
>
Multiplication of a block-diagonal matrix by a block-vector.
>
Addition of a block-tri-diagonal matrix and a block-diagonal matrix.
>
Multiplication of a block-tri-diagonal matrix by a block-vector.
>
Multiplication of a block-tri-diagonal matrix by a scalar.
>
Returns the largest absolute matrix element with sign.
>
Performs the power iterations on the block-tri-diagonal eigenvalue problem.
>
Returns the infinity norm of the matrix resulting from subtraction of the two square matrices.
>
Performs the fractional-iteration method on the block-tri-diagonal eigenvalue problem.
>
Returns the sum of all elements of a vector.
>
Returns the smallest interval (ie the limits of the interval) from the numbers in a vector which includes a specified value.
.: parser.c: Functions which parse an input file.
> Returns a line from a input file stream. > Reads and parses an input file and returns the resulting characters.
.: mlab_io.c: Functions which write a vector and matrix in Matlab format.
> Write a matrix to a Matlab mat-file. > Write a vector to a Matlab mat-file.

Next: The main procedure Up: Neutronics Implementation Previous: Overview Contents Index

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