Simulation of the Effects of an Air Blast Wave - ELSA - Europa

quadratic. Therefore, the size of the elements increases with the distance to the charge. Model cv6uses the same thickness for all elements.Figure 43: Model control volume (cv8)Modell airl bTNTElements in radial(m)(m)equivalentdirectioncv6 2.5 1 5 30cv8 4.0 1 5 30cv9 4.0 1 5 40Table 11: Control volume modelsThe model cv6 has a coarse mesh and shows in the investigated region a sufficient representation ofthe experiments (see Figure 44 and Figure 45). The models cv8 and cv9 are longer and the elementsare more conform. The coarse mesh cv8 gets very small pressures and impulses. The finer modelcv9 represent the experimental peak pressures from Kingery better. The peak pressure isoverestimated for larger scaled distances. No model of the models tested herein can represent theimpulse.59