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📄 cfd recipes chapter 21.mht

📁 四十三种差分格式源代码,这只是计算用的
💻 MHT
📖 第 1 页 / 共 4 页
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        used. If you choose a value of m larger than 4, you will have to =
change=20
        the source code to include appropriate values for the =
Runge-Kutta=20
        coefficients.
        <P>This code requires an ASCII input file cell.dat in one of two =
forms.=20
        <P>EITHER:=20
        <BLOCKQUOTE><I>N: Number of Cells, max lambda: max =
delta_t/delta_x,=20
          tfinal: final time </I>
          <P><I>1</I>
          <P><I>Cell Edge x1</I>
          <P><I>Cell Edge x2</I>
          <P>...
          <P><I>Cell Edge xN</I>
          <P><I>Cell Edge xN+1</I>
          <P><I>Cell-Centered Sample y1</I>
          <P><I>Cell-Centered Sample y2</I>
          <P>...
          <P><I>Cell-Centered Sample yN</I>
          <P></P></BLOCKQUOTE>OR:
        <P>
        <P>
        <BLOCKQUOTE><I>N: Number of Cells, lambda: delta_t/delta_x, =
tfinal:=20
          final time </I>
          <P><I>-1</I>
          <P><I>Cell Center x1</I>
          <P><I>Cell Center x2</I>
          <P>...
          <P><I>Cell Center xN</I>
          <P><I>Cell Center xN+1</I>
          <P><I>Cell-Centered Sample y1</I>
          <P><I>Cell-Centered Sample y2</I>
          <P>...
          <P><I>Cell-Centered Sample yN</I>
          <P></P></BLOCKQUOTE>This code will produce two ASCII output =
files:=20
        <UL>
          <LI>enosho.out. Lists delta_t, delta_x, and lambda. Also lists =
the=20
          final time requested vs. actual final time (these may differ =
if=20
          delta_t is not an even divisor of tfinal). Finally, lists the =
intial=20
          vs. final conditions at each point.=20
          <LI>enosho.plt. Approximate vs. real solution at each point.=20
        </LI></UL>Using the sample input file, these codes will generate =
figures=20
        21.14 and and 21.15 in the book. You can generate a variety of =
other=20
        input files using the initial condition generator. The generator =
is a=20
        little awkward right now. Uncomment the sections of the code =
relevant to=20
        the desired generator function and recompile. The only input =
required by=20
        the generator function is the number of points, taken directly =
from an=20
        command prompt screen. With the initial condition generator =
cell.f and=20
        enosho.f, you can generate all of the figures in section 21.4 of =
the=20
        book.
        <P></P></BLOCKQUOTE></TD></TR></TBODY></TABLE><BR>
<DIV align=3Dcenter>[ <A=20
href=3D"http://capella.colorado.edu/~laney/booksoft.htm">Book Software =
Home</A> |=20
<A href=3D"http://capella.colorado.edu/~laney/ch4code.htm">Chapter 4</A> =
| <A=20
href=3D"http://capella.colorado.edu/~laney/ch5code.htm">Chapter 5</A> | =
<BR><A=20
href=3D"http://capella.colorado.edu/~laney/ch8code.htm">Chapter 8</A> | =
<A=20
href=3D"http://capella.colorado.edu/~laney/ch9code.htm">Chapter 9</A> | =
<A=20
href=3D"http://capella.colorado.edu/~laney/ch11code.htm">Chapter 11</A> =
| <A=20
href=3D"http://capella.colorado.edu/~laney/ch17code.htm">Chapter 17</A> =
| <BR><A=20
href=3D"http://capella.colorado.edu/~laney/ch18code.htm">Chapter 18</A> =
| <A=20
href=3D"http://capella.colorado.edu/~laney/ch20code.htm">Chapter 20</A> =
| <A=20
href=3D"http://capella.colorado.edu/~laney/ch22code.htm">Chapter 22</A> =
| <A=20
href=3D"http://capella.colorado.edu/~laney/ch23code.htm">Chapter 23</A> =
]=20
</DIV><BR><BR>
<HR>
<FONT size=3D-1><I>&copy; 2000, Culbert B. Laney </I>&nbsp; &nbsp; =
&nbsp; <A=20
href=3D"mailto:laney@colorado.edu">mailto:laney@colorado.edu</A></FONT></=
BODY></HTML>

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