4:45 PM - 5:00 PM
[2E16] Development of a phenomenological quench model and investigation of its applicability
Keywords:Quenching phenomenon, spray cooling, wetting velocity, Leidenfrost
When falling liquid film cooling for the high-temperature wall is conducted, quenching phenomena occur at the liquid film front.
In nuclear power plants, the quenching phenomenon appears in emergency cooling cases.
To estimate cooling time for emergency cooling, the heat transfer of the quenching phenomenon should be elucidated.
Existing researches reported the heat transfer coefficient distribution as a quenching model.
However, as these models depend on each experimental condition, the applicability was limited under the different conditions.
The present study observed the details of the quenching phenomenon from the experiments. Based on the observed quenching phenomenon, a new quenching model is defined.
It is confirmed that the new model estimates wetting velocity in the error of ±30% in different conditions.
In nuclear power plants, the quenching phenomenon appears in emergency cooling cases.
To estimate cooling time for emergency cooling, the heat transfer of the quenching phenomenon should be elucidated.
Existing researches reported the heat transfer coefficient distribution as a quenching model.
However, as these models depend on each experimental condition, the applicability was limited under the different conditions.
The present study observed the details of the quenching phenomenon from the experiments. Based on the observed quenching phenomenon, a new quenching model is defined.
It is confirmed that the new model estimates wetting velocity in the error of ±30% in different conditions.