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Create, run and save a new DWSIM simulation in Python
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import pythoncom | |
pythoncom.CoInitialize() | |
import clr | |
from System.IO import Directory, Path, File | |
from System import String, Environment | |
dwsimpath = "C:\\Users\\Daniel\\AppData\\Local\\DWSIM8\\" | |
clr.AddReference(dwsimpath + "CapeOpen.dll") | |
clr.AddReference(dwsimpath + "DWSIM.Automation.dll") | |
clr.AddReference(dwsimpath + "DWSIM.Interfaces.dll") | |
clr.AddReference(dwsimpath + "DWSIM.GlobalSettings.dll") | |
clr.AddReference(dwsimpath + "DWSIM.SharedClasses.dll") | |
clr.AddReference(dwsimpath + "DWSIM.Thermodynamics.dll") | |
clr.AddReference(dwsimpath + "DWSIM.Thermodynamics.ThermoC.dll") | |
clr.AddReference(dwsimpath + "DWSIM.UnitOperations.dll") | |
clr.AddReference(dwsimpath + "DWSIM.Inspector.dll") | |
clr.AddReference(dwsimpath + "System.Buffers.dll") | |
from DWSIM.Interfaces.Enums.GraphicObjects import ObjectType | |
from DWSIM.Thermodynamics import Streams, PropertyPackages | |
from DWSIM.UnitOperations import UnitOperations | |
from DWSIM.Automation import Automation3 | |
from DWSIM.GlobalSettings import Settings | |
Directory.SetCurrentDirectory(dwsimpath) | |
# create automation manager | |
interf = Automation3() | |
sim = interf.CreateFlowsheet() | |
# add water | |
water = sim.AvailableCompounds["Water"] | |
sim.SelectedCompounds.Add(water.Name, water) | |
# create and connect objects | |
m1 = sim.AddObject(ObjectType.MaterialStream, 50, 50, "inlet") | |
m2 = sim.AddObject(ObjectType.MaterialStream, 150, 50, "outlet") | |
e1 = sim.AddObject(ObjectType.EnergyStream, 100, 50, "power") | |
h1 = sim.AddObject(ObjectType.Heater, 100, 50, "heater") | |
m1 = m1.GetAsObject() | |
m2 = m2.GetAsObject() | |
e1 = e1.GetAsObject() | |
h1 = h1.GetAsObject() | |
sim.ConnectObjects(m1.GraphicObject, h1.GraphicObject, -1, -1) | |
sim.ConnectObjects(h1.GraphicObject, m2.GraphicObject, -1, -1) | |
sim.ConnectObjects(e1.GraphicObject, h1.GraphicObject, -1, -1) | |
sim.AutoLayout() | |
# steam tables property package | |
stables = PropertyPackages.SteamTablesPropertyPackage() | |
sim.AddPropertyPackage(stables) | |
# set inlet stream temperature | |
# default properties: T = 298.15 K, P = 101325 Pa, Mass Flow = 1 kg/s | |
m1.SetTemperature(300.0) # K | |
m1.SetMassFlow(100.0) # kg/s | |
# set heater outlet temperature | |
h1.CalcMode = UnitOperations.Heater.CalculationMode.OutletTemperature | |
h1.OutletTemperature = 400 # K | |
# request a calculation | |
Settings.SolverMode = 0 | |
errors = interf.CalculateFlowsheet2(sim) | |
print(String.Format("Heater Heat Load: {0} kW", h1.DeltaQ)) | |
# save file | |
fileNameToSave = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "heatersample.dwxmz") | |
interf.SaveFlowsheet(sim, fileNameToSave, True) | |
# save the pfd to an image and display it | |
clr.AddReference(dwsimpath + "SkiaSharp.dll") | |
clr.AddReference("System.Drawing") | |
from SkiaSharp import SKBitmap, SKImage, SKCanvas, SKEncodedImageFormat | |
from System.IO import MemoryStream | |
from System.Drawing import Image | |
from System.Drawing.Imaging import ImageFormat | |
PFDSurface = sim.GetSurface() | |
bmp = SKBitmap(1024, 768) | |
canvas = SKCanvas(bmp) | |
canvas.Scale(1.0) | |
PFDSurface.UpdateCanvas(canvas) | |
d = SKImage.FromBitmap(bmp).Encode(SKEncodedImageFormat.Png, 100) | |
str = MemoryStream() | |
d.SaveTo(str) | |
image = Image.FromStream(str) | |
imgPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "pfd.png") | |
image.Save(imgPath, ImageFormat.Png) | |
str.Dispose() | |
canvas.Dispose() | |
bmp.Dispose() | |
from PIL import Image | |
im = Image.open(imgPath) | |
im.show() |
On tiny10 Win x64 I have python 10 through miniconda
Environment variables [System Path]:
C:\Users\ukhan\miniconda3\Scripts\;C:\Users\ukhan\miniconda3\Library\bin\;C:\Users\ukhan\miniconda3\;
then u need conda install pythonnet pywin32 -y
Everything works
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Thank you for providing this code. I have a problem with mono compatibility (or maybe pythonnet compatibility) with my M2 macbook. So, I didn't succeed in running the code. when I use (import clr) i a get a long error including (OSError: cannot load library '/Library/Frameworks/Mono.framework/Versions/6.12.0/lib/libmonosgen-2.0.dylib':). i tried to fix the problem with (command export DYLD_LIBRARY_PATH="/Library/Frameworks/Mono.framework/Versions/6.12.0/lib:$DYLD_LIBRARY_PATH"
) switching to mono 6.8 and installing different versions of pythonnet. but, the problem is still there. Is there any solution to fix or bypass this problem?