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16
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Introduction
I specialize in conducting comprehensive safety analyses for various types of nuclear power plants using advanced system and computational fluid dynamics codes.
Publications
Publications (16)
The process of pool scrubbing is crucial for managing severe nuclear reactor accidents. However, there are significant uncertainties regarding the retention capacity of fission products. The effectiveness of pool scrubbing has a direct impact on the source term. However, current modeling and prediction capabilities are limited due to conservative a...
The objective of this study is to propose a novel correlation that promises a more accurate representation of bubble size variations in the swarm region at pool scrubbing conditions, requiring only information on the inlet conditions and eliminating the need for complex flow parameter assessments. The recently published experiment studies by Abe et...
Pool scrubbing is an important safety measure for mitigating severe accidents in nuclear reactors, including Small Modular Reactors (SMRs). This process involves complex interactions between hydrodynamic, thermal, and chemical processes. As gas bubbles containing fission products move through a water pool, radioactive substances are effectively tra...
This study investigates Equivalent Spherical Diameter (ESD) estimation at high inlet velocity pool scrubbing conditions using the Interfacial Area Transport Equation (IATE) diameter model including bubble-induced turbulence and interphase modeling. The compatibility of area-averaged Sauter Mean Diameter (SMD), area-averaged Local Equivalent Diamete...
Pool scrubbing is a crucial process in nuclear reactor safety. It involves bubbling contaminated gases through water to remove radioactive particles and reduce environmental release. The Decontamination Factor (DF) measures scrubbing efficiency, defined as the ratio of contaminant mass entering the pool to the post-scrubbing mass. A higher DF indic...
Pool scrubbing is a widely used technique for retaining aerosol particles. It is characterized by high gas injection flow rates and substantial topological changes in different zones within the scrubber. The scrubbing process is generally divided into injection and swarm zones based on the evolution of the gas-liquid interface topology, and differe...
Calculating the bubble diameter accurately is crucial for predicting the De-contamination Factor (DF) in pool scrubbing codes. Currently, empirical correlations that depend on flow regimes and conditions are used to estimate bubble diameters in pool scrubbing codes, leading to a discrepancy between predicted and experimental DFs. The Interfacial Ar...
According to TEPCO Progress Report No.4 [1], the
post-radiation measurements after the Fukushima
Daiichi nuclear disaster revealed that the fission product
retention was less effective than it was previously
predicted. Thus, the pool scrubbing phenomenon was
brought back on the spotlights again in the nuclear safety
community since it enables...
This paper introduces the CAP version-up to 3.0 and the PT analysis method in order to apply to SMR containment.
There have been many efforts to improve the
prediction capability of the system codes such as
RELAP5, MARS-KS, and SPACE using ATLAS
experimental data. However, since the heat loss of the
ATLAS has not been reflected correctly in the code
input model, there have been differences between the
experimental data and the code prediction results. This
di...
Wall condensation is an important topic in various Light Water Reactor (LWR) nuclear safety applications. In containment buildings, condensation takes place in the presence of high non-condensable gas fractions, such as the condensation along containment walls in the presence of air following a Loss of Coolant Accident (LOCA). Recently, various Pas...
The Advanced Thermal-Hydraulic Test Loop for Accident Simulation (ATLAS) facility has been established by Korea Atomic Energy Research Institute to conduct integral effect tests for Advanced Power Reactor 1400 (APR1400). ATLAS has been scaled by using the three-level scaling methodology suggested by Ishii et al with the scaling ratio of 1/2 and 1/1...
Questions
Questions (22)
Hello everyone,
I am trying to learn the fundamentals of breakage and coalescence modeling in bubble columns, specifically, for air-water systems when the water is at rest. I believe this is one of the most basic forms in bubble columns however, I am having a hard time finding good references on the topic.
Please let me know your recommendations for any good reference.
Thank you,
Erol.
Common usages:
- Electricity
- Medicine
- Food and Agriculture
- Art and Dating
- Space
- Environment
What is the definition of Small Modular Reactor (SMR) in your country and your understanding?
Hello, everyone!
I am looking for experiments that measured the single bubble growth parameter such as bubble diameter, sliding velocity/length, lift-off diameter for the steam-water case. Any recommendation would be welcomed.
Thank you in advance.
Regards,
Erol.
Hello, everyone!
I am looking for some references and/or experimental data for a system when steam enters into a cylindrical pipe with a very low mass flow rate and condenses in it due to heat transfer with outside. Inside of the pipe can be considered as forced convection whereas the outside is cooled by air via natural convection. I would like to check the outside heat transfer coefficient and related parameters.
Thank you in advance.
Best regards,
Erol.
Hello, everyone!
I am doing research on pool scrubbing and I am looking for experiments where a gas (preferably non-condensing) is injected into a pool by a single nozzle. I thought I could create an analogy with bubble column reactors (BCR) in chemical engineering however all the experiments I found are using some sort of sparger. How do you call the single nozzle BCRs in chemical engineering?
I need interfacial area concentration, a void fraction (gas hold up), and bubble as velocity information in a setting where the gas is being injected through a single nozzle into a pool or a large diameter tank. Any suggestions would be welcomed.
Thank you,
EB
There are a few countries that have advanced nuclear industry and there are those countries that newly emerging in the field of nuclear. Is it possible for a third-party country to benefit from a nuclear power plant project in a newly emerging country? What I mean by a third-party country is a country that is not involved in the project as a main contractor. What kind of projects or services will be required once a nuclear power plant is built in a country? Or the services while the construction is going on. I am aware that the question is very broad but I am also looking for broad fields.
Thank you.
