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string_simulation.html
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<html>
<head>
<title>
STRING_SIMULATION - Vibrating String Simulation
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
STRING_SIMULATION <br> Vibrating String Simulation
</h1>
<hr>
<p>
<b>STRING_SIMULATION</b>
is a C++ program which
simulates the behavior of a vibrating string
by solving the corresponding initial boundary value problem (IBVP),
creating files that can be displayed by gnuplot.
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files described and made available on this
web page are distributed under
<a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
</p>
<h3 align = "center">
Languages:
</h3>
<p>
<b>STRING_SIMULATION</b> is available in
<a href = "../../c_src/string_simulation/string_simulation.html">a C version</a> and
<a href = "../../cpp_src/string_simulation/string_simulation.html">a C++ version</a> and
<a href = "../../f77_src/string_simulation/string_simulation.html">a FORTRAN77 version</a> and
<a href = "../../f_src/string_simulation/string_simulation.html">a FORTRAN90 version</a> and
<a href = "../../m_src/string_simulation/string_simulation.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../cpp_src/fd1d_wave/fd1d_wave.html">
FD1D_WAVE</a>,
a C++ program which
applies the finite difference method to solve
a version of the wave equation in one spatial dimension.
</p>
<p>
<a href = "../../cpp_src/gnuplot/gnuplot.html">
GNUPLOT</a>,
C++ programs which
illustrate how a program can write data and command files
so that gnuplot can create plots of the program results.
</p>
<p>
<a href = "../../cpp_src/high_card_simulation/high_card_simulation.html">
HIGH_CARD_SIMULATION</a>,
a C++ program which
simulates a situation in which you see the cards in a deck one by one,
and must select the one you think is the highest and stop;
the program uses GNUPLOT for graphics.
</p>
<h3 align = "center">
Reference:
</h3>
<p>
<ol>
<li>
George Lindfield, John Penny,<br>
Numerical Methods Using MATLAB,<br>
Second Edition,<br>
Prentice Hall, 1999,<br>
ISBN: 0-13-012641-1,<br>
LC: QA297.P45.
</li>
</ol>
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "string_simulation.cpp">string_simulation.cpp</a>, the source code.
</li>
<li>
<a href = "string_simulation.sh">string_simulation.sh</a>,
BASH commands to compile, link and load the source code.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "string_simulation_output.txt">string_simulation_output.txt</a>,
the output file.
</li>
<li>
<a href = "string_data.txt">string_data.txt</a>,
a data file containing the solution values.
</li>
<li>
<a href = "string_commands.txt">string_commands.txt</a>,
GNUPLOT commands that can create an image from the solution data file.
</li>
<li>
<a href = "string.png">string.png</a>,
an image of the solution as it changes over time.
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>MAIN</b> is the main program for STRING_SIMULATION.
</li>
<li>
<b>F</b> supplies the initial condition.
</li>
<li>
<b>G</b> supplies the initial time derivative.
</li>
<li>
<b>TIMESTAMP</b> prints the current YMDHMS date as a time stamp.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../cpp_src.html">
the C++ source codes</a>.
</p>
<hr>
<i>
Last revised on 01 December 2012.
</i>
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