Abstract
The cross-correlation flow measurement technique, applied for measuring the coolant flow rate in a nuclear reactor, was calibrated with the use of numerical simulations of turbulent flow. The three-dimensional domain was collapsed into two dimensions. With a two-dimensional calculation of steady-state flow with transient thermal characteristics the response of thermocouples to a temperature variation was calculated. By cross-correlating the calculated thermocouple responses, the link between total flow rate and measured transit times was made. Three calibration points were taken in the range of 579 kg/s to 1477 kg/s. In this range, the product of the calculated transit time and the mass flow-rate is constant up to +3.5% and -2.4%. The reliability of the calibration was estimated at {+-}4.6%. The influence of the inlet boundary conditions, and the modelling of the flow in the upper part of the downcomer channel on the calibration result is shown to be small. A measured velocity profile effect was successfully predicted. (orig.).
Stekelenburg, A J.C.;
[1]
Hagen, T.H.J.J. van der;
[1]
Akker, H.E.A. van den
[2]
- Technische Univ. Delft (Netherlands). Interfacultair Reactor Inst.
- Technische Univ. Delft (Netherlands). Lab. voor Fysische Technologie
Citation Formats
Stekelenburg, A J.C., Hagen, T.H.J.J. van der, and Akker, H.E.A. van den.
Calibration of the Dodewaard downcomer thermocouple cross-correlation flow-rate measurements.
Netherlands: N. p.,
1992.
Web.
Stekelenburg, A J.C., Hagen, T.H.J.J. van der, & Akker, H.E.A. van den.
Calibration of the Dodewaard downcomer thermocouple cross-correlation flow-rate measurements.
Netherlands.
Stekelenburg, A J.C., Hagen, T.H.J.J. van der, and Akker, H.E.A. van den.
1992.
"Calibration of the Dodewaard downcomer thermocouple cross-correlation flow-rate measurements."
Netherlands.
@misc{etde_217746,
title = {Calibration of the Dodewaard downcomer thermocouple cross-correlation flow-rate measurements}
author = {Stekelenburg, A J.C., Hagen, T.H.J.J. van der, and Akker, H.E.A. van den}
abstractNote = {The cross-correlation flow measurement technique, applied for measuring the coolant flow rate in a nuclear reactor, was calibrated with the use of numerical simulations of turbulent flow. The three-dimensional domain was collapsed into two dimensions. With a two-dimensional calculation of steady-state flow with transient thermal characteristics the response of thermocouples to a temperature variation was calculated. By cross-correlating the calculated thermocouple responses, the link between total flow rate and measured transit times was made. Three calibration points were taken in the range of 579 kg/s to 1477 kg/s. In this range, the product of the calculated transit time and the mass flow-rate is constant up to +3.5% and -2.4%. The reliability of the calibration was estimated at {+-}4.6%. The influence of the inlet boundary conditions, and the modelling of the flow in the upper part of the downcomer channel on the calibration result is shown to be small. A measured velocity profile effect was successfully predicted. (orig.).}
place = {Netherlands}
year = {1992}
month = {Dec}
}
title = {Calibration of the Dodewaard downcomer thermocouple cross-correlation flow-rate measurements}
author = {Stekelenburg, A J.C., Hagen, T.H.J.J. van der, and Akker, H.E.A. van den}
abstractNote = {The cross-correlation flow measurement technique, applied for measuring the coolant flow rate in a nuclear reactor, was calibrated with the use of numerical simulations of turbulent flow. The three-dimensional domain was collapsed into two dimensions. With a two-dimensional calculation of steady-state flow with transient thermal characteristics the response of thermocouples to a temperature variation was calculated. By cross-correlating the calculated thermocouple responses, the link between total flow rate and measured transit times was made. Three calibration points were taken in the range of 579 kg/s to 1477 kg/s. In this range, the product of the calculated transit time and the mass flow-rate is constant up to +3.5% and -2.4%. The reliability of the calibration was estimated at {+-}4.6%. The influence of the inlet boundary conditions, and the modelling of the flow in the upper part of the downcomer channel on the calibration result is shown to be small. A measured velocity profile effect was successfully predicted. (orig.).}
place = {Netherlands}
year = {1992}
month = {Dec}
}