Modeling Moving Systems with RELAP5-3D
| Autor: | D. L. Aumiller, Francis X. Buschman, George L. Mesina, Matt R. Kyle |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Body force
Physics Inertial frame of reference 020209 energy Rotation around a fixed axis 02 engineering and technology Mechanics 01 natural sciences Frame of reference 010305 fluids & plasmas Physics::Fluid Dynamics Euler angles symbols.namesake Nuclear Energy and Engineering Flow (mathematics) 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Fluid dynamics symbols Mechanics of planar particle motion |
| Zdroj: | Nuclear Science and Engineering. 182:83-95 |
| ISSN: | 1943-748X 0029-5639 |
| DOI: | 10.13182/nse15-3 |
| Popis: | RELAP5-3D is typically used to model stationary, land-based reactors. However, it can also model reactors in other inertial and accelerating frames of reference. By changing the magnitude of the gravitational vector through user input, RELAP5-3D can model reactors on a space station or the moon. The field equations have also been modified to model reactors in a non-inertial frame, such as occur in land-based reactors during earthquakes or onboard spacecraft. Transient body forces affect fluid flow in thermal-fluid machinery aboard accelerating crafts during rotational and translational accelerations. It is useful to express the equations of fluid motion in the accelerating frame of reference attached to the moving craft. However, careful treatment of the rotational and translational kinematics is required to accurately capture the physics of the fluid motion. Correlations for flow at angles between horizontal and vertical are generated via interpolation where no experimental studies or data exist. The equations for three-dimensional fluid motion in a non-inertial frame of reference are developed. As a result, two different systems for describing rotational motion are presented, user input is discussed, and an example is given. |
| Databáze: | OpenAIRE |
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