Abstract

There is different approach for design of SMR reactors; these reactors may be built on land or on a floating platform. Implementation of each reactor in different industrial field must satisfy specific thermal and neurotic requirements. Ocean base SMR reactors are involved with sea waves, ocean conditions and sudden accelerations. Therefore, marine reactors are under the action of inertia force induced by the variable winds and dynamic ocean waves. These forces causing rolling and displacement of marines in different directions and rectors need tolerate the wave oscillations. The ship oscillations may treated about every axis x, y, z, independently. The ship motions include heeling, heaving, rolling, pitching, yawing, swing and surging motions. In this paper heaving and rolling motion using FLUENT code are treated and the thermos-hydraulic parameter investigated. Defining angular motion in non-inertia frame and obtaining acceleration in inertia frame, one may simulate numerically rolling and heaving motion along various amplitudes and periods. Simulation indicates that for a certain flow in an open loop and initial flow rate, amplitudes of the relative flow rate mainly depend on the relative magnitude of the pressure head against the oscillatory pressure drop. The solutions show the relative flow rate of the opened loop fluctuates periodically but not sinusoidally because that the oscillatory pressure drop is non-sinusoidal. The fluctuation amplitude increases evidently as the rolling amplitude increases, while increases slightly as the rolling period increases. For the opened loop, the oscillatory pressure drop is mainly due to the change of the gravitational pressure drop. The modelling results are in good agreement with benchmarks.