Changeset 461 for branches/packed/eml/stage_separators/tray.mso

Timestamp:

Feb 15, 2008, 1:00:49 PM (15 years ago)

Author:

Paula Bettio Staudt

Message:

More changes

File:

• branches/packed/eml/stage_separators/tray.mso (modified) (2 diffs)

branches/packed/eml/stage_separators/tray.mso

@@ -364 +364 @@
         rhoL as dens_mass;
         rhoV as dens_mass;
-        uL as velocity (Brief="volume flow rate of liquid, m^3/m^2/s", Default = 0.007);
-        uV as velocity (Brief="volume flow rate of vapor, m^3/m^2/s", Default = 1.14);
+        uL as velocity (Brief="volume flow rate of liquid, m^3/m^2/s", Lower=0, Default = 0.007);
+        uV as velocity (Brief="volume flow rate of vapor, m^3/m^2/s", Lower=0, Default = 1.14);
         dp as length (Brief="Particle diameter", Default=1e-3);
         invK as Real (Brief="Wall factor");
@@ -400 +400 @@
         "Reynolds number of the vapor stream"
         Rev*invK = dp*uV*rhoV / (miV*(1-e));
-        
-        "Resistance Coefficient"
-        Qsio = Cpo * (64/Rev + 1.8/Rev^0.08);
+
+        if Rev > 1e-4 then
+                "Resistance Coefficient"        
+                Qsio = 1;#Cpo * (64/Rev + 1.8/Rev^0.08);
+        else
+                Qsio = 1;
+        end
 
         "Pressure drop and Vapor flow"