Progress on SMARTT Simulation of Pressure Tube Circumferential Temperature Distribution Experiments ­- Test 1 to 4

Abstract

The computer code, SMARTT, has been used to model Tests 3 and 4 of the Pressure Tube Circumferential Temperature Distribution Experiments being conducted at WNRE. The shape of the circumferential temperature distribution during ballooning and the pressure tube straining behaviour are well-predicted. The timing for rupture/contact shows excellent agreement for Test 4, however, the predicted heatup is delayed for Test 3. The sensitivity to several calculational parameters is presented. The results of Tests 1 to 4 are discussed in light of our current understanding of the phenomena of pre-contact rupture.