Advanced Materials Research Vol. 485

Abstract: As for the reliability of ship-bridge collision, function relation between the structure response variable and basic variable is very complex and the traditional theory has been difficult to work it out, so we need the help of finite element numerical method to obtain the solution. APDL language and two methods are used to solve the reliability of ship-bridge collision, compared to seven MCS method conditions and ODRSM-MCS probability of failure of bridge pier. The pier failure probability of 10000 MCS method sampling and ODRSM-MCS sample is very close. ODRSM-MCS method and the MCS method to the case of the same accuracy, while MCS reliability is used in the calculation, the time used is 280min and the ODRSM-MCS mix of computational time is 5min. So the ODRSM-MCS method is much more efficient and effective.

Abstract: An interior trajectory simulation of the gas-steam missile ejection has been developed with the help of FLUENT software. One of the special features of this simulation is the method by which the coupled two-phase problem is reduced to solving the fluid equations only. The calculation has been done efficiently in FLUENT after setting all the required parameters and adding the source terms. Several figures of the velocity and pressure have been given to show the flow field in the reservoir. The distribution curves of the velocity and acceleration of the missile show that the results of the simulation are in good agreement with the test data of the experiments. This model can be used to analyze the similar launch procedures in practice.