13.6.5. Macro “sensitivityRBDFunctionFlowrate.py”
13.6.5.1. Objective
The objective of this macro is to perform a RBD sensitivity analysis on a set of eight parameters
used in the flowrateModel model described in Presentation of the problem.
13.6.5.2. Macro Uranie
"""
Example of RDB analysis on the flowrate function
"""
from URANIE import DataServer, Sensitivity
import ROOT
ROOT.gROOT.LoadMacro("UserFunctions.C")
# Define the DataServer
tds = DataServer.TDataServer("tdsflowrate", "DataBase flowrate")
tds.addAttribute(DataServer.TUniformDistribution("rw", 0.05, 0.15))
tds.addAttribute(DataServer.TUniformDistribution("r", 100.0, 50000.0))
tds.addAttribute(DataServer.TUniformDistribution("tu", 63070.0, 115600.0))
tds.addAttribute(DataServer.TUniformDistribution("tl", 63.1, 116.0))
tds.addAttribute(DataServer.TUniformDistribution("hu", 990.0, 1110.0))
tds.addAttribute(DataServer.TUniformDistribution("hl", 700.0, 820.0))
tds.addAttribute(DataServer.TUniformDistribution("l", 1120.0, 1680.0))
tds.addAttribute(DataServer.TUniformDistribution("kw", 9855.0, 12045.0))
# Size of a sampling.
nS = 4000
# Graph
trbd = Sensitivity.TRBD(tds, "flowrateModel", nS)
trbd.setDrawProgressBar(False)
trbd.computeIndexes("graph")
trbd.getResultTuple().Scan("Out:Inp:Order:Method:Value", "Algo==\"--first--\"")
The function flowrateModel is loaded from the macro UserFunctions.C (the file can be found in
${URANIESYS}/share/uranie/macros)
ROOT.gROOT.LoadMacro("UserFunctions.C")
Each parameter is related to the TDataServer as a TAttribute and obeys an uniform law on specific interval
tds = DataServer.TDataServer("tdsflowrate", "DataBase flowrate")
tds.addAttribute(DataServer.TUniformDistribution("rw", 0.05, 0.15))
tds.addAttribute(DataServer.TUniformDistribution("r", 100.0, 50000.0))
tds.addAttribute(DataServer.TUniformDistribution("tu", 63070.0, 115600.0))
tds.addAttribute(DataServer.TUniformDistribution("tl", 63.1, 116.0))
tds.addAttribute(DataServer.TUniformDistribution("hu", 990.0, 1110.0))
tds.addAttribute(DataServer.TUniformDistribution("hl", 700.0, 820.0))
tds.addAttribute(DataServer.TUniformDistribution("l", 1120.0, 1680.0))
tds.addAttribute(DataServer.TUniformDistribution("kw", 9855.0, 12045.0))
To instantiate the TRBD object, one uses the TDataServer, the name of the function and the number of
samplings needed to perform sensitivity analysis (here \(n_S\) =4000):
trbd = Sensitivity.TRBD(tds, "flowrateModel", nS)
Computation of sensitivity indexes:
trbd.computeIndexes("graph")
13.6.5.3. Graph
Figure 13.21 Graph of the macro “sensitivityRBDFunctionFlowrate.py”
13.6.5.4. Console
--- Uranie v4.11/0 --- Developed with ROOT (6.36.06)
Copyright (C) 2013-2026 CEA/DES
Contact: support-uranie@cea.fr
Date: Thu Feb 12, 2026
<URANIE::WARNING>
<URANIE::WARNING> *** URANIE WARNING ***
<URANIE::WARNING> *** File[${SOURCEDIR}/dataSERVER/souRCE/TDataServer.cxx] Line[8531]
<URANIE::WARNING> TDataServer::getTuple Error : There is no tree!
<URANIE::WARNING> *** END of URANIE WARNING ***
<URANIE::WARNING>
<URANIE::WARNING>
<URANIE::WARNING> *** URANIE WARNING ***
<URANIE::WARNING> *** File[${SOURCEDIR}/dataSERVER/souRCE/TDataServer.cxx] Line[8531]
<URANIE::WARNING> TDataServer::getTuple Error : There is no tree!
<URANIE::WARNING> *** END of URANIE WARNING ***
<URANIE::WARNING>
<URANIE::INFO>
<URANIE::INFO> *** URANIE INFORMATION ***
<URANIE::INFO> *** File[${SOURCEDIR}/meTIER/sampler/souRCE/TSpaceFilling.cxx] Line[167]
<URANIE::INFO> TSamplerStochastic::init: the TDS [tdsflowrate] contains data: we need to empty it !
<URANIE::INFO> *** END of URANIE INFORMATION ***
<URANIE::INFO>
************************************************************************
* Row * Out * Inp * Order * Method * Value *
************************************************************************
* 0 * flowrateM * rw * First * RBD * 0.7558010 *
* 2 * flowrateM * r * First * RBD * 0.0026080 *
* 4 * flowrateM * tu * First * RBD * 0.0035324 *
* 6 * flowrateM * tl * First * RBD * 0.0032848 *
* 8 * flowrateM * hu * First * RBD * 0.0408758 *
* 10 * flowrateM * hl * First * RBD * 0.0469345 *
* 12 * flowrateM * l * First * RBD * 0.0347870 *
* 14 * flowrateM * kw * First * RBD * 0.0165843 *
************************************************************************
==> 8 selected entries