Three-Dimensional Computational Modeling of Turbulent Flow Field, Bed Morphodynamics and Liquefaction Adjacent to Munitions
Abstract
This document reports the design, development, and results of three-dimensional (3D) computational models for underwater munition dynamics. Large amount of observational and empirical data has been gathered in field and laboratory studies to reveal the mechanisms behind the motion of munitions. However, there are still knowledge gaps for the physical and deterministic explanation of the phenomenology. This project aims to develop and utilize 3D computational models to predict the initiation of motion, continuous movement, and final deposition of munitions, which are important for site assessment and remediation actions. Two models were developed. The first model, ibScourFoam, is for the 3D scour simulations around munitions. The second model, modified from the DualSPHysics code, is for the coupled motion of fluid-object-sediment system. The models capture the key physical processes which control the motion of munitions, including turbulent flow, sediment transport and scour, granular material dynamics, and the rigid-body motion of munitions. In addition, these processes are coupled and thus the developed models can simulate their interactions. This final report presents the details of the model development, validation, and applications. Results have shown that the models can capture the dominant physical processes and help us gain new insights. The computer models also produces additional information, such as force time history as munitions move, which is extremely hard to measure in experiments but of great importance to munition dynamics.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 11, 2022
- Accession Number
- AD1219172
Entities
People
- Tong Qiu
- Xiaofeng Liu
Organizations
- Pennsylvania State University