Material Flow Section  Size
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Navigation: Models ➔ Common Sections ➔ Material Flow Section ➔ Size (Sz)
Material Flow (Qo)  Qxxxx Tab Include Properties  Species Flow  Optional Tabs  

Basic Information  Energy ValuesAtUserTandP  Density Correction Solubility Saturation  Acidity Charge Transport  HeatsOfCombustion Heating Values  Solution Impurity H2O Properties  Water Quality  Sp Tab EC Tab  DLockup LockUp  DTrack Track  DSz Sz MSz  DSSA SSA 
Related Links: Common Content Section, Size Distribution (PSD), Size Distribution Definition
Once a Size distribution has been created the Define size tab page (DSz) will be activated. This allows the user to define the Size Distribution(s) for the solids in the unit. For more information please see Size Distribution Definition.
DSz Tab Page
 This tab is only visible if Size Distribution (PSD) has been configured in the Configuration file AND SzDist.Action has been set to 'Create' or 'Modify', either in a Feeder or in a Pipe on the Qi tab.
Tag (Long/Short)  Input / Calc  Description/Calculated Variables / Options 
Inputs  
Distribution  Input / Display  If more than one Size Distribution has been defined for the project, then the user may select the required Size distribution in this field. If only a single Size Distribution is defined for the project, then this field displays the Size distribution. 
Method  RosinRammler  Mass fraction retained in each size interval is calculated using the RosinRammler equation with two userspecified constants: a & b. 
Modified RosinRammler  Mass fraction retained in each size interval is calculated using the Modified RosinRammler equation with two userspecified constants: d50 and sharpness constant.  
GaudinSchuhmann  Mass fraction retained in each size interval is calculated using the GaudinSchuhmann equation with two userspecified constants: k & m.  
Lynch  Mass fraction retained in each size interval is calculated using the Lynch equation with two userspecified constants, d50 & m.  
LinearInterpolate  This method takes a user defined number of data points and interpolates to determine the size distribution across the full range of size intervals.  
DataPoints: Interval Fraction  With this method the user directly sets the mass fraction in each individual size interval.  
SingleDefn  Tick Box  This is enabled when you are tracking size data independently for multiple solids species. When enabled the user can select this to set a single size distribution definition that applies to ALL solid species (rather then separate parameters for each solid). 
The required inputs will depend on the Method chosen. The Size Distribution fields will either be display fields, or in the case of Data Entry they will be input fields. Please see Size Distribution Definition for the equations and description of these fields.  
Display Options  
View (Not visible for Data Entry methods) 
Interval Fraction  The table will display the calculated mass fraction in each interval fraction. 
Cumulative Passing  The table will display the cumulative mass passing through each sieve size. In this case the top size will always display 100%.  
Cumulative Retained  The table will display the cumulative mass retained on each sieve size. In this case the top size will always display 0%.  
Intervals  
Clicking on this button will toggle between displaying the size intervals in Ascending or Descending order. 
Size_Units  List  The user may select the display units, ie.e mm, um, etc., from a dropdown list. 
Please see Size Distribution Definition for more information on the methods and constants used.
Sz Tab Page
 This tab is only visible if Size Distribution (PSD) has been configured in the Configuration file AND Size Distribution (PSD) has been 'Created', either in a Feeder or in a Pipe on the Qi tab, upstream of the current unit.
Tag (Long/Short)  Calc / Option  Descriptions 

Sz...  
SpeciesX.Qm  Calc  Each species selected to contain size data will be listed here, showing the mass flow for that species.
NOTES:

Zeros  
Toggles between show / hide zero. Only applies to the SpeciesX.Qm section above. 
The size distribution table displays the parameters described below for each solid with a specified size distribution.
 
Size Intervals  TopSize / MidSize  The size displayed will be the "topsize" or "midsize" of the size interval. SysCAD calculates the MidSize for each size interval using the Geometric Mean. See Sz Data Sections for more information. 
FP:  Fraction passing of the solids  this is the fraction of solids in a size interval.  
FPCum:  Cumulative Fraction passing of the solids, summing from the smallest size fraction to the largest.  
Qm  Mass flowrate of the solid within the size interval  
QmCum  Cumulative Mass flowrate of the solids, summing from the smallest size fraction to the largest.  
SpN:  Optional view. Number of Particles per unit mass of solids.  
SpNCum:  Optional view. Cumulative Number of Particles per unit mass of solids, summing from the smallest size fraction to the largest.  
NFp:  Optional view. Number of Particles for the size interval as a percentage of the total number of particles.  
NFpCum:  Optional view. Cumulative Number of Particles for the size interval as a percentage of the total number of particles, summing from the smallest size fraction to the largest.  
Qn  Optional view. Number of Particles per unit time within the size interval.  
QnCum  Optional view. Cumulative Number of Particles per unit time within the size interval, summing from the smallest size fraction to the largest.  
Distribution  Display List  Shows the size distribution being used. 
Global SzDist (PSD) View Options  
Intervals  
Clicking on this button will toggle between displaying the size intervals in Ascending or Descending order. 
Interval Display  
Clicking on this button will toggle between displaying the size intervals as TopSize or MidSize. 
CumulativeDisplay  
Only visible if the project contains one PSD solid. In the Separate Table mode, the cumulative values are displayed as a separate table. The Separate Table mode will always be used when two or more PSD solids are used. 
ViewColumns  with popup selection 
Clicking on this button will show a popup list containing all available variables for the size distribution table. Please note that if the project contains many PSD solids, then this list can become very long. To shorten the list, please only select the required display option from the Plant Model  Qualities tab. 
View Options  PlantModel.PSD  clicking on the magnifying glass icon to the right of this will jump to the Plant Model  Qualities tab. 
Please see Sz Data Sections for more information and explanation of the above fields.
MSz Tab Page
 This tab is only visible if Size Distribution (PSD) has been configured in the Configuration file AND Size Distribution (PSD) has been 'Created', either in a Feeder or in a Pipe on the Qi tab, upstream of the current unit.
Tag (Long/Short)  Calc  Descriptions 

Size Passes Fraction  
P80:  Calc  Size passing fraction = 80%. Fraction set in the configuration file. 
P50:  Calc  Size passing fraction = 50%. Fraction set in the configuration file. 
Fraction Passing Size  
m100:  Calc  Fraction passing 100 microns. The size interval definition is set in the configuration file. 
m10000:  Calc  Fraction passing 10000 microns (10 mm). The size interval definition is set in the configuration file. 
Fraction Retained Size  
r1000:  Calc  Cumulative retained fraction at specified size of 1000 microns (1mm). The size interval definition is set in the configuration file. 
Other  
PPG:  Calc  Total Particle Count per Mass. 
SAM:  Calc  Surface Area Mass basis (per Gram). 
SAL:  Calc  Surface Area per Liter 
APD  Calc  Average particle diameter based on Fraction Passing and Geometric mean size of each size interval 
Mass Passing Size  
Qm100  Calc  Cumulative passing mass at specified size. The size interval definition is set in the configuration file. 
Mass Retained Size  
QmR100  Calc  Cumulative retained mass at specified size. The size interval definition is set in the configuration file. 
Spread and Range  
QuartileSpread  Calc  Difference in sizes at two specified cumulative passing fractions:75.0%  25.0%. Range definition is set in the configuration file. 
mRange10_1000  Calc  Mass flow between two different size ranges: 0.010mm to 1.000mm. Range definition is set in the configuration file. 
fRange1_10000  Calc  Mass Fraction between two different size ranges: 0.001mm to 10.000mm. Range definition is set in the configuration file. 
Please see MSz Data Sections for more information and explanation of the above fields.