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<P><H2>The Design Solver Introduction Page</H2>
<HR>
<P>This set of pages allows the calculation of the the minimum and maximum
fluid velocities for fluidization, as described on the <A
HREF="../FBR_Fluid_Mech/fluid_bed_scroll.htm" TARGET="_parent">Fluid Mechanics
of FBRs Page</A>. These values are then used, along
with the user supplied expansion factor, to calculate the superficial velocity
(u) required for the
system and the Froude number under which the system is operating.
<P>The calculations are run by a form-fed script. The form contains a number of input boxes, which have default values for the parameters of the <EM><B>Ergun equation</B></EM>.
<P>Simply enter the desired values for the parameters, press the "Calculation"
button, and the script will
return the values of uo, ut, and u along with the Reynolds number used in the
ut calculation and the system's Froude number.
<P>The parameters used in the calculations are shown below.
<P><B>Variables from Ergun Equation</B>
<P>
<UL><B>
<LI>Void Fraction
<LI>Catalyst Density
<LI>Fluid Density
<LI>Fluid viscosity
<LI>Particle Diameter
</B>
</UL>
<P><B>It is also necessary to have an idea of the expansion desired, as
mentioned above.</B>
This
parameter is used in conjunction with the void fraction to determine the
operating velocity of the bed.
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<P><CENTER><H2><A HREF="designp_scroll.htm" TARGET="_parent">Design Solver Form</A></H2></CENTER>
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<ADDRESS><B>Doug Thornhill</B>
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