The validation included a rapid mass flow reduction experiment and a depressurized loss of forced cooling (DLOFC) experiment.
For the mass flow reduction experiment, the rotational speed of the blowers dropped rapidly from 100%to50%0% in 62 s.
In this experiment, mass flow rate, temperature, and the exact chemical composition of hot products mixed with air sent toward the turbulent flame base are fully determined.
At a given liquid mass flow rate in the experiment, the magnitude of the wall normal velocity component is controlled by the inlet area, which is used as a modelling parameter in the present study.
In relation to this, at the Institute for Reactor Safety in Forschungszentrum Karlsruhe two thermohydraulic aspects of TBM coolant system are investigated: heat removal from the first wall in the framework of HETRA experiment and mass flow distribution among different components of the TBM coolant system in GRICAMAN experiments.
The parameters recorded during the experiments are mass flow, temperature, upstream pressure, downstream pressure (resulting in differential pressure over the rock sample), and the confining pressure.
In the experiments, the mass flow rate of fluid change from 0.0083 to 0.033 kg/s and the weight fraction of nanoparticles are 0.1%, 0.2% and 0.4%.
In these experiments, the mass flow rates are examined under different pintle positions, upstream pressures, downstream pressures and dynamic motions of the pintle.
In the experiments, the mass flow rates were examined under different downstream and upstream pressure conditions and time varying downstream pressure.
Airflows selected for testing were 0.5, 1.0, 2.0 and 4.0 L/min and were set and maintained during the duration of the experiment by mass flow controllers (Analyt-MTC GmbH, Mülheim, Germany).
