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FLUID_CONSTANTS.html
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FLUID_CONSTANTS.html
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<html><head><link rel="stylesheet" type="text/css" href="style.css"/></head><body> <H2> <BR> *FLUID CONSTANTS </H2> <P> Keyword type: model definition, material <P> With this option the specific heat at constant pressure and the dynamic viscosity of a gas or liquid can be defined. These properties are required for fluid dynamic network calculations. They can be temperature dependent. <P><P> <BR> <P> First line: <UL> <LI>*FLUID CONSTANTS </LI> </UL> <P> Following line: <UL> <LI>Specific heat at constant pressure. </LI> <LI>Dynamic viscosity. </LI> <LI>Temperature. </LI> </UL> Repeat this line if needed to define complete temperature dependence. <P> <PRE>
Example:
*FLUID CONSTANTS
1.032E9,71.1E-13,100.
</PRE> <P> defines the specific heat and dynamic viscosity for air at 100 <SPAN CLASS="MATH"><B><IMG WIDTH="18" HEIGHT="15" ALIGN="BOTTOM" BORDER="0" SRC="img305.png" ALT="$ K$"></B></SPAN> in a unit system using N, mm, s and K: <!-- MATH $c_p=1.032 \times 10^9 \text{mm}^2/\text{s}^2 \text{K}$ --> <SPAN CLASS="MATH"><B><IMG WIDTH="118" HEIGHT="33" ALIGN="MIDDLE" BORDER="0" SRC="img2247.png" ALT="$ c_p=1.032 \times 10^9$"> mm<IMG WIDTH="19" HEIGHT="33" ALIGN="MIDDLE" BORDER="0" SRC="img6.png" ALT="$ ^2/$">s<IMG WIDTH="11" HEIGHT="18" ALIGN="BOTTOM" BORDER="0" SRC="img3.png" ALT="$ ^2$"> K</B></SPAN> and <!-- MATH $\mu = 71.1 \times 10^{-13} \text{N} \text{s} / \text{mm}^2$ --> <SPAN CLASS="MATH"><B><IMG WIDTH="122" HEIGHT="33" ALIGN="MIDDLE" BORDER="0" SRC="img2248.png" ALT="$ \mu = 71.1 \times 10^{-13}$"> N s<IMG WIDTH="12" HEIGHT="31" ALIGN="MIDDLE" BORDER="0" SRC="img1.png" ALT="$ /$"> mm<IMG WIDTH="11" HEIGHT="18" ALIGN="BOTTOM" BORDER="0" SRC="img3.png" ALT="$ ^2$"></B></SPAN>. <P> <P><P> <BR> Example files: linearnet, branch1, branch2. <P> </body></html>