WASET
	%0 Journal Article
	%A Tadashi Watanabe and  Jinya Katsuyama and  Akihiro Mano
	%D 2019
	%J International Journal of Nuclear and Quantum Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 155, 2019
	%T Comparison of Two-Phase Critical Flow Models for Estimation of Leak Flow Rate through Cracks
	%U https://publications.waset.org/pdf/10010869
	%V 155
	%X The estimation of leak flow rates through narrow cracks in structures is of importance for nuclear reactor safety, since the leak flow could be detected before occurrence of loss-of-coolant accidents. The two-phase critical leak flow rates are calculated using the system analysis code, and two representative non-homogeneous critical flow models, Henry-Fauske model and Ransom-Trapp model, are compared. The pressure decrease and vapor generation in the crack, and the leak flow rates are found to be larger for the Henry-Fauske model. It is shown that the leak flow rates are not affected by the structural temperature, but affected largely by the roughness of crack surface.

	%P 516 - 519