Introduction

Dam-break flow is a type of fluid flow that occurs when a dam or a barrier holding water suddenly collapses, leading to a sudden release of water. Such events are a significant hazard to human lives, the environment, and infrastructure. When a dam-break flow strikes a rigid obstacle, it can cause significant damage due to the high-velocity water flow. Additionally, the dam-break flow can also transport sediments and other materials, leading to changes in the landscape and river morphology. In this research proposal, we aim to investigate the dynamics of dam-break flow striking a rigid obstacle using Computational Fluid Dynamics (CFD) with Lagrangian Particle Tracking (LPT).

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Objectives

The primary objectives of this research are:

1. To simulate the dam-break flow striking a rigid obstacle using CFD with LPT.
2. To investigate the effects of different obstacle geometries on the dynamics of the dam-break flow and sediment transport.
3. To analyze the impact of different dam-break flow parameters (such as flow velocity, water depth, and sediment concentration) on the sediment transport and erosion around the obstacle.
4. To validate the CFD-LPT simulation results against available experimental data and other numerical simulations.

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Methodology

The proposed methodology for this research includes the following steps:

1. Setting up the CFD-LPT simulation model using a suitable commercial or open-source software.
2. Developing the input parameters for the dam-break flow, such as the initial water depth, flow velocity, and sediment concentration.
3. Defining the obstacle geometry and incorporating it into the CFD-LPT model.
4. Conducting the CFD-LPT simulations for different obstacle geometries and dam-break flow parameters.
5. Analyzing the simulation results to study the sediment transport, erosion, and other fluid dynamic parameters around the obstacle.
6. Validating the CFD-LPT simulation results using available experimental data and other numerical simulations.

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Expected Outcomes

The expected outcomes of this research are:

1. A comprehensive understanding of the dynamics of dam-break flow striking a rigid obstacle using CFD-LPT.
2. Identification of the factors that influence sediment transport and erosion around the obstacle.
3. A dataset of simulation results for different obstacle geometries and dam-break flow parameters that can be used as a benchmark for future research.
4. Validation of the CFD-LPT simulation results against experimental data and other numerical simulations, which will increase the credibility and reliability of the simulation model.

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Relevance

This research proposal aims to investigate the dynamics of dam-break flow striking a rigid obstacle using CFD-LPT. The proposed methodology will help in understanding the sediment transport and erosion patterns around the obstacle for different dam-break flow parameters and obstacle geometries. The outcomes of this research will have practical implications in developing better strategies for mitigating the hazards associated with dam-break flows and improving the design and safety of infrastructure in vulnerable areas.

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