How to export time history temperature result at a node as a csv file in batch in Mechanical?
Rohith Patchigolla
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How to export time history temperature result at a node as a csv file in batch in Mechanical?
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Solution: Use Python Code object (added under Solution) with Target Callback --> "After Post"
The below is the script in Python Code which exports time vs temperature data at a node (provided as an input) and exports this as a csv file in User Files directory of the workbench project.
def after_post(this, solution):# Do not edit this line import mech_dpf import Ans.DataProcessing as dpf import os import wbjn mech_dpf.setExtAPI(ExtAPI) dpn = wbjn.ExecuteCommand(ExtAPI,"returnValue(a+Parameters.GetActiveDesignPoint().Name)",a="DP") projectDir = wbjn.ExecuteCommand(ExtAPI,"returnValue(GetUserFilesDirectory())") #Input node number nodeId = 10264 #Get the data source (i.e. result file) dataSource = dpf.DataSources(solution.Parent.ResultFileName) #Create result operator myResName = 'Probe_Temperature' myRes = dpf.operators.result.temperature() #Get the time data corresponding to result sets time_provider = dpf.operators.metadata.time_freq_provider() time_provider.inputs.data_sources.Connect(dataSource) numSets = time_provider.outputs.time_freq_support.GetData().NumberSets timeids = time_provider.outputs.time_freq_support.GetData().TimeFreqs.Data result_set_ids = [] for i in range(numSets): result_set_ids.append(i+1) #Create time scoping operator time_scoping = dpf.Scoping() time_scoping.Location = dpf.locations.time_freq_sets time_scoping.Ids = result_set_ids #Provide Inputs myRes.inputs.data_sources.Connect(dataSource) myRes.inputs.time_scoping.Connect(time_scoping) #Get Outputs myRes_fields = myRes.outputs.fields_container.GetData() data = [] #Loop over all available time points to get the displacement at the node for i in range(numSets): myRes_field = myRes_fields[i] data.append(myRes_field.GetEntityDataById(nodeId)[0]) filePath = os.path.join(projectDir,dpn + '_' + myResName + '.csv') if os.path.isfile(filePath): os.remove(filePath) ctr = 0 with open(filePath,'w') as f: f.write('Time Step,' + myResName + '\n') for d in data: f.write(str(timeids[ctr]) + ',' + str(d) + '\n') ctr+=1
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