Difference between revisions of "IronPython Script Snippets"

From DWSIM - Open Source Chemical Process Simulator
Jump to navigation Jump to search
Line 1: Line 1:
−
= Script Manager Snippet 1: create and Connect Objects =
+
= Create and Connect Objects =
  
 
Assuming that you're running a simulation with defined compound(s) and property package(s), this will create and connect a cooler and its connections:
 
Assuming that you're running a simulation with defined compound(s) and property package(s), this will create and connect a cooler and its connections:
Line 31: Line 31:
 
</source>
 
</source>
  
−
= Script Manager Snippet 2: getting a reference to a Compound in the simulation =
+
= Getting a reference to a Compound in the simulation =
  
 
<source lang=python>
 
<source lang=python>
Line 43: Line 43:
 
'''mycompound''' and '''mycompound2''' are referencing the same object in memory.
 
'''mycompound''' and '''mycompound2''' are referencing the same object in memory.
  
−
= Script Manager Snippet 3: executing a script from another tab/section =
+
= Executing a script from another tab/section =
  
 
<source lang=python>
 
<source lang=python>
Line 62: Line 62:
 
</source>
 
</source>
  
−
= Script Manager Snippet 4: setting the properties of a Material Stream =
+
= Setting the properties of a Material Stream =
  
 
<source lang=python>
 
<source lang=python>
Line 74: Line 74:
  
 
</source>
 
</source>
 +
 +
= Getting Surface Tension and Diffusion Coefficients from a Material Stream =
 +
 +
<source lang=python>
 +
 +
import clr
 +
import System
 +
 +
# get feed's interfacial tension - method 1
 +
 +
mixphase = feed.GetPhase("Mixture")
 +
 +
sftens = mixphase.Properties.surfaceTension
 +
 +
print str(sftens) + " N/m"
 +
 +
# get feed's interfacial tension - method 2
 +
 +
sftens2 = clr.Reference[System.Object]()
 +
 +
feed.GetTwoPhaseProp("surfacetension", None, "", sftens2)
 +
 +
print str(sftens2.Value[0]) + " N/m"
 +
 +
# diffusion coefficients
 +
 +
phase = feed.GetPhase("Vapor")
 +
 +
compound = phase.Compounds["Methane"]
 +
 +
difc = compound.DiffusionCoefficient
 +
 +
print str(difc) + " m2/s"
 +
 +
</source>
 +
 +
= Other Snippets =
 +
 +
For more code snippets, go to [https://sourceforge.net/p/dwsim/discussion/scripting/ https://sourceforge.net/p/dwsim/discussion/scripting/].

Revision as of 17:36, 2 July 2019

Create and Connect Objects

Assuming that you're running a simulation with defined compound(s) and property package(s), this will create and connect a cooler and its connections: 


import clr
clr.AddReference('DWSIM.Interfaces')

from DWSIM import Interfaces

# http://dwsim.inforside.com.br/api_help57/html/M_DWSIM_Interfaces_IFlowsheet_AddObject.htm
# http://dwsim.inforside.com.br/api_help57/html/T_DWSIM_Interfaces_Enums_GraphicObjects_ObjectType.htm

cooler = Flowsheet.AddObject(Interfaces.Enums.GraphicObjects.ObjectType.Cooler, 100, 100, 'COOLER-001')
heat_out = Flowsheet.AddObject(Interfaces.Enums.GraphicObjects.ObjectType.EnergyStream, 130, 150, 'HEAT_OUT')
inlet = Flowsheet.AddObject(Interfaces.Enums.GraphicObjects.ObjectType.MaterialStream, 50, 100, 'INLET')
outlet = Flowsheet.AddObject(Interfaces.Enums.GraphicObjects.ObjectType.MaterialStream, 150, 100, 'OUTLET')

cooler.GraphicObject.CreateConnectors(1, 1)
inlet.GraphicObject.CreateConnectors(1, 1)
outlet.GraphicObject.CreateConnectors(1, 1)
heat_out.GraphicObject.CreateConnectors(1, 1)

# http://dwsim.inforside.com.br/api_help57/html/M_DWSIM_Interfaces_IFlowsheet_ConnectObjects.htm

Flowsheet.ConnectObjects(inlet.GraphicObject, cooler.GraphicObject, 0, 0)
Flowsheet.ConnectObjects(cooler.GraphicObject, outlet.GraphicObject, 0, 0)
Flowsheet.ConnectObjects(cooler.GraphicObject, heat_out.GraphicObject, 0, 0)

Getting a reference to a Compound in the simulation


mycompound = Flowsheet.SelectedCompounds['Methane']

mycompound2 = Flowsheet.GetSimulationObject['MSTR-001'].Phases[0].Compounds['Methane']

mycompound and mycompound2 are referencing the same object in memory.

Executing a script from another tab/section


import clr
import System
from System import *

clr.AddReference('System.Core')
clr.ImportExtensions(System.Linq)

# get the script text from "Functions" using LINQ
source = Flowsheet.Scripts.Values.Where(lambda x: x.Title == 'Functions').FirstOrDefault().ScriptText.replace('\r', '')

# execute the script
exec(source)

Setting the properties of a Material Stream


ms1 = Flowsheet.GetFlowsheetSimulationObject('MSTR-001')

overall = ms1.GetPhase('Overall')
overall.Properties.temperature = 200 # set temperature to 200 K
overall.Properties.pressure = 101325 # set pressure to 101325 Pa
overall.Properties.massflow = 14 # set mass flow to 14 kg/s

Getting Surface Tension and Diffusion Coefficients from a Material Stream


import clr
import System

# get feed's interfacial tension - method 1

mixphase = feed.GetPhase("Mixture")

sftens = mixphase.Properties.surfaceTension

print str(sftens) + " N/m"

# get feed's interfacial tension - method 2

sftens2 = clr.Reference[System.Object]()

feed.GetTwoPhaseProp("surfacetension", None, "", sftens2)

print str(sftens2.Value[0]) + " N/m"

# diffusion coefficients

phase = feed.GetPhase("Vapor")

compound = phase.Compounds["Methane"]

difc = compound.DiffusionCoefficient

print str(difc) + " m2/s"

Other Snippets

For more code snippets, go to https://sourceforge.net/p/dwsim/discussion/scripting/.

Retrieved from "https://dwsim.org/wiki/index.php?title=IronPython_Script_Snippets&oldid=253"