Changeset 461 for branches


Ignore:
Timestamp:
Feb 15, 2008, 1:00:49 PM (15 years ago)
Author:
Paula Bettio Staudt
Message:

More changes

Location:
branches/packed
Files:
2 edited

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  • branches/packed/eml/stage_separators/tray.mso

    r458 r461  
    364364        rhoL as dens_mass;
    365365        rhoV as dens_mass;
    366         uL as velocity (Brief="volume flow rate of liquid, m^3/m^2/s", Default = 0.007);
    367         uV as velocity (Brief="volume flow rate of vapor, m^3/m^2/s", Default = 1.14);
     366        uL as velocity (Brief="volume flow rate of liquid, m^3/m^2/s", Lower=0, Default = 0.007);
     367        uV as velocity (Brief="volume flow rate of vapor, m^3/m^2/s", Lower=0, Default = 1.14);
    368368        dp as length (Brief="Particle diameter", Default=1e-3);
    369369        invK as Real (Brief="Wall factor");
     
    400400        "Reynolds number of the vapor stream"
    401401        Rev*invK = dp*uV*rhoV / (miV*(1-e));
    402        
    403         "Resistance Coefficient"
    404         Qsio = Cpo * (64/Rev + 1.8/Rev^0.08);
     402
     403        if Rev > 1e-4 then
     404                "Resistance Coefficient"       
     405                Qsio = 1;#Cpo * (64/Rev + 1.8/Rev^0.08);
     406        else
     407                Qsio = 1;
     408        end
    405409
    406410        "Pressure drop and Vapor flow"
  • branches/packed/sample/stage_separators/sample_tray.mso

    r458 r461  
    144144       
    145145        #t1.OutletV.F = 177.9 * 'kmol/h';
    146         #t1.Qsio = 0.61;
    147146
    148147        SET
    149148        #Metal Pall Ring - nominal packing size 50 mm - Billet and Schultes, 1999.
    150149        t1.Q = 0 * 'kW';
    151         t1.Ap = 0.8 * 'm^2';
    152         t1.V = 0.8 * 'm^2' * 0.4 * 'm';
    153         t1.ds = 1.009 * 'm';
     150        t1.Ap = 0.2 * 'm^2'; #0.8 * 'm^2';
     151        t1.V = 0.2 * 'm^2' * 0.1 * 'm';#0.8 * 'm^2' * 0.4 * 'm';
     152        t1.ds = 0.5 * 'm'; #1.009 * 'm';
    154153        t1.Cpo = 0.763;
    155154        t1.e = 0.951;
    156155        t1.a = 112.6 * 'm^2/m^3';
    157         t1.hs = 0.4 * 'm';#0.075 * 'm';
     156        t1.hs = 0.1 * 'm'; #0.4 * 'm';
    158157
    159158        INITIAL
    160         t1.OutletL.T = 290 *'K';
    161         t1.ML = 0.2 * 'kmol';
     159        t1.OutletL.T = 280 *'K';
     160        t1.ML = 0.01 * 'kmol';
    162161        t1.OutletL.z([1:4]) = [0.286, 0.203, 0.148, 0.006];
    163162       
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