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Latest News
Commercial nuclear innovation "new space" age
In early 2006, a start-up company launched a small rocket from a tiny island in the Pacific. It exploded, showering the island with debris. A year later, a second launch attempt sent a rocket to space but failed to make orbit, burning up in the atmosphere. Another year brought a third attempt—and a third failure. The following month, in September 2008, the company used the last of its funds to launch a fourth rocket. It reached orbit, making history as the first privately funded liquid-fueled rocket to do so.
Norihiro Doda, Yasushi Okano, Hisashi Ninokata
Nuclear Technology | Volume 144 | Number 2 | November 2003 | Pages 175-185
Technical Paper | Thermal Hydraulics | doi.org/10.13182/NT03-A3438
Articles are hosted by Taylor and Francis Online.
A numerical simulation thermal-hydraulics code called SPOOL based on computational fluid dynamics considering sodium reaction and aerosol transport is developed. Sodium pool fires are simulated using the SPOOL code, and periodic oscillation of the flame is observed with frequency similar to that observed for small-scale pool fire experiments with industrial fuels. The calculated mass-burning rate differs slightly from experimental results, yet it increases with pool temperature in agreement with experimental trends. The mass flux of aerosol driven by thermophoresis is calculated to be about 100 times larger than that by gravity, and the aerosols become concentrated at the edge of the pool. The release fraction, obtained by dividing the total mass of aerosol released into the atmosphere by that produced, increases with pool temperature in qualitative agreement with experiments.
