AbstractIn this paper, the CFD code DET3D is described which has been used for simulating assumed accident scenarios in nuclear reactors (fission and fusion, see e.g. [4,5,11]) involving hydrogen detonations in complex 3-dimensional geometries. Two validation calculations against experiments are discussed in detail: (i) a hydrogen-air detonation in a 12 m long straight tube with a truely 3-dimensional inner obstacle, and (ii) a pure radiolytic gas detonation in a 5 m long U-shaped tube at 44 bar initial press…
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