Bethe-Tait method

It would be expected that the results of a calculation for a cylindrical core with a diameter-to-height DjH) ratio of 1 would be similar to that of a spherical core having the same core volume. Calculations were performed using the spherical and cylindrical versions of the modified Bethe-Tait method, and the results show good agreement between the two models for this case. One example of such a comparison is shown in... 

Another important feature of the safety analysis which is heat transfer related is the determination of the total energy that might be released from a core meltdown accident. A classical approach, the Bethe-Tait method, has been modified and incorporated into the Weak Explosion Program (WEP) (19). 

In Appendix Al, the hydrodynamic equations relating the reactivity reduction to the disassembly of the core produced by pressure generation in the core are derived. The derivation makes use of the method originally outlined by Bethe and Tait (lA). Aside from this original work, elaboration on the method has been made by McCarthy et al. (2A), Jankus (SA) and by Nicholson (4A). The development here follows most closely that of Jankus. 

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