Tetrahydrothiophene (THT) concentration distribution dataset in urban gas network: simulation and field monitoring data for point selection optimization

Simulation data were processed to extract steady-state concentration values and transient response times.2. Temporal and Geographical ScopeSpatial Scope: Simulation data covers pipeline lengths up to 3000m. Field data covers a specific loop of the urban distribution network with a total user-end distance range of approximately 800m to 2200m.3.

Description of Data FilesThe dataset is provided in Excel format (.xlsx) containing the following sheets:Fig3_Velocity_Simulation: THT concentration (mg/m³) vs. Length (m) for flow velocities of 2, 3, 4, 5, and 6 m/s.Fig4_Pressure_Simulation: THT concentration (mg/m³) vs. Length (m) for pressures of 0.1, 0.15, 0.2, and 0.3 MPa.Fig5_Transient_Response: Time-series data (s) of THT concentration (mg/m³) at specific outlets for different pipe diameters (100mm and 150mm).Fig6_Multi_Outlet_Response: Response time (s) and stable concentration values for 10 different monitoring outlets.Fig7_Deviation_Analysis: Correlation data between "User-End Distance" (m) and "Deviation in THT Concentration" (%).Fig9_Field_Test_Snapshot: THT concentrations measured at 10 monitoring points (#1-#10) at 7 distinct timestamps.Fig10_24h_Field_Test: Continuous 24-hour monitoring data for 4 selected points (#2, #3, #5, #6) showing diurnal fluctuations.4.

Units and MeasurementConcentration: Milligrams per cubic meter (mg/m³).Length/Distance: Meters (m).Time: Seconds (s) for simulations; HH:MM format for field tests.Pressure: Megapascals (MPa).5. Limitations and ErrorsSimulation data represents idealized conditions assuming constant flow and temperature. Field data may contain minor fluctuations due to environmental temperature changes and sensor precision limits .