Material Flow Section - Flow

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Navigation: Main Page -> Models -> Common Sections -> Material Flow Section -> Flow

Material Flow Section Material Flow Section - Flow Material Flow Section - Energy Material Flow Section - Water Quality Species Flow Section

Introduction

These properties are related to the material flowing in the stream, e.g. mass fraction, volumetric flow, density, etc.

Data Sections

Tag (Long/Short) Input / Calc Description/Calculated Variables / Options

Properties

Temperature / T Calc The temperature of the incoming material.
Pressure / P Calc The pressure of the incoming material.
Mass Flow
MassFlow / Qm Calc The total mass flow into the pipe.
SolidMassFlow / SQm Calc The mass of solids flowing into the pipe.
LiquidMassFlow / LQm Calc The mass of liquids flowing into the pipe.
VapourMassFlow / VQm Calc The mass of vapour flowing into the pipe.
SlurryMassFlow / SLQm Calc The mass of slurry flowing into the pipe.
AqDissolvedMassFlow / AqDissQm Calc The mass of dissolved aqueous species flowing into the pipe. This will be the flow of all aqueous species excluding water. Only available in Build 136 or later.
AqueousMassFlow / AqQm Calc The mass of all aqueous species (including water) flowing into the pipe. Only available in Build 136 or later.
Volume Flow
VolFlow / Qv Calc The total volume flow into the pipe.
SolidVolFlow / SQv Calc The volume of solids flowing into the pipe.
LiquidVolFlow / LQv Calc The volume of liquids flowing into the pipe.
VapourVolFlow / VQv Calc The volume of vapour flowing into the pipe.
SlurryVolFlow / SLQv Calc The volume of slurry flowing into the pipe.
Normal Volume Flow
NVolFlow / NQv Calc The normalised volumetric flow through the pipe. The volume is calculated at Normal Temperature and Presure (NTP). NTP can be specified by the user in the configuration file (see Project Configuration (cfg File)). Default values are 20C and 101.325kPa.
SolidNVolFlow / SNQv Calc The Normal volume of solids flowing into the pipe.
LiquidNVolFlow / LNQv Calc The Normal volume of liquids flowing into the pipe.
VapourNVolFlow / VNQv Calc The Normal volume of vapour flowing into the pipe.
SlurryNVolFlow / SLNQv Calc The Normal volume of slurry flowing into the pipe.
Totalised Mass Flow

These fields are only visible in a dynamic project, when Audit is turned on from the Plant Model. Only some of these fields may be shown depending on the Totaliser Flow options chosen.

Total.TotalMass / Total.Mt Calc The total mass which has flowed through the pipe since the model started running.
Total.SolidMass / Total.SMt Calc The total mass of solids which has flowed through the pipe since the model started running.
Total.LiquidMass / Total.LMt Calc The total mass of liquids which has flowed through the pipe since the model started running.
Total.VapourMass / Total.VMt Calc The total mass of vapour which has flowed through the pipe since the model started running.
Total.SlurryMass / Total.SLMt Calc The total mass of slurry (solids + liquids) which has flowed through the pipe since the model started running.
Totalised Volume Flow

These fields are only visible in a dynamic project when Audit is turned on from the Plant Model. Only some of these fields may be shown depending on the Totaliser Flow options chosen.

Total.TotalVolume / Total.Vt Calc The total volume which has flowed through the pipe since the model started running.
Total.SolidVolume / Total.SVt Calc The total volume of solids which has flowed through the pipe since the model started running.
Total.LiquidVolume / Total.LVt Calc The total volume of liquids which has flowed through the pipe since the model started running.
Total.VapourVolume / Total.VVt Calc The total volume of vapour which has flowed through the pipe since the model started running.
Total.SlurryVolume / Total.SLVt Calc The total volume of slurry (solids + liquids) which has flowed through the pipe since the model started running.
First Flow

These fields are only visible in a dynamic project when Audit is turned on from the Plant Model. Only some of these fields may be shown depending on the First Flow options chosen.

Qm.At.Step Calc The step that flow first occurs in the pipe since the model started running.
Qm.At.Time Calc The time that flow first occurs in the pipe since the model started running.
Density Correction
H2O(l).State Data This will be OK if all of the species with density correction functions in the {{{UnitOp}}} conditions are within their mass fraction limits. Any species that has exceeded it's mass fraction limit will be shown in this field.
For example, if the user has a density correction function for NiSO4(aq) that is valid up to a mass fraction of 10% NiSO4 and the stream contains 15% NiSO4(aq), this field will contain: Limit:NiSO4(aq).
H2O(l).Rho Calc The density of pure water at the temperature and pressure of the {{{UnitOp}}}.
H2O(l).CorrFactor Calc The calculated density correction factor using all the correction factors of aqueous species in the {{{UnitOp}}} for which density correction factors have been defined. Please see Density Correction Function.
H2O(l).AppRho Calc The calculated density of the liquor with only water and the components that have density correction functions.

Note: This value may be lower or higher than the actual liquid density if there are other liquid components in the {{{UnitOp}}} that do not have density correction functions.

If the Additional Density Correction option is selected in the Plant Model - Species tab page or from the [[Material_{{{type}}}_Section#Qo_.28Qxxxx.29_Tab_Page|Include Properties]] dropdown list on the first page of the material {{{type}}} section, then the following fields will also be shown:
H2O(l).AppRho25 Calc The calculated density of the liquor with only water and the components that have density correction functions, at 25°C.
Calc The calculated mass of the liquor with only water and the components that have density correction functions.
Calc The calculated volume of the liquor with only water and the components that have density correction functions.
H2O(l).Fct.X(y) Calc The calculated density correction factor for species X(y).
Mass Fractions
SolidFrac / Sf Calc Solids mass fraction
LiquidFrac / Lf Calc Liquid mass fraction
VapourFrac / Vf Calc Vapour mass fraction
SlurryFrac / SLf Calc Only available in Build 139.31388 or later. Slurry (solids + liquids) mass fraction.
Slurry.SolidFrac / Slurry.Sf Calc Only available in Build 137 or later. Solids mass fraction on slurry basis (solids + liquids)
Slurry.LiquidFrac / Slurry.Lf Calc Only available in Build 137 or later. Liquid mass fraction on slurry basis (solids + liquids)
Volume Fractions (The following fields are only available in Build 137 or later.)
SolidVolFrac / Svf Calc Solids volume fraction
LiquidVolFrac / Lvf Calc Liquid volume fraction
VapourVolFrac / Vvf Calc Vapour volume fraction
SlurryVolFrac / SLvf Calc Only available in Build 139.31388 or later. Slurry (solids + liquids) volume fraction.
Slurry.SolidVolFrac / Slurry.Svf Calc Only available in Build 139.31388 or later. Solids volume fraction on slurry basis (solids + liquids)
Slurry.LiquidVolFrac / Slurry.Lvf Calc Only available in Build 139.31388 or later. Liquid volume fraction on slurry basis (solids + liquids)
Molar Flow
MoleFlow / QMl Calc The total number of moles flowing through the unit.
SolidMoleFlow / SQMl Calc The number of moles of solids flowing through the unit.
LiquidMoleFlow / LQMl Calc The total number of moles of liquids flowing through the unit.
VapourMoleFlow / VQMl Calc The total number of moles of vapours flowing through the unit.
SlurryMoleFlow / SLQMl Calc The total number of moles of solids and liquids flowing through the unit.
Molar Fractions
MlSolidFrac / MlSf Calc Solids molar fraction
MlLiquidFrac / MlLf Calc Liquid molar fraction
MlVapourFrac / MlVf Calc Vapour molar fraction
MlSlurryFrac / MlSLf Calc Only available in Build 139.31388 or later. Slurry (solids + liquids) molar fraction.
MoleWt Calc The average molecular weight of all the species.
SolidMoleWt / SMoleWt Calc Only available in Build 139 or later. The average molecular weight of all solid species.
LiquidMoleWt / LMoleWt Calc Only available in Build 139 or later. The average molecular weight of all liquid species.
VapourMoleWt / VMoleWt Calc Only available in Build 139 or later. The average molecular weight of all vapour species.