Advanced Cavitation Mitigation Techniques in High-Speed Marine Propellers Using Mass Injection

About Course

Cavitation is a persistent challenge in high-speed marine propellers, leading to performance loss, noise, and material degradation. This course delves into advanced computational fluid dynamics (CFD) techniques to analyze and mitigate cavitation using mass injection methods. By leveraging numerical models such as the k–ω SST turbulence model with curvature correction and the Zwart cavitation model, this course provides insights into optimizing mass injection for economic and practical applications in the maritime industry.

Designed for naval architects, marine engineers, and CFD researchers, this course offers theoretical foundations and practical simulations using ANSYS Fluent to explore cavitation mitigation strategies.

Abstract:

Cavitation significantly affects the performance and longevity of high-speed marine propellers. Among various mitigation techniques, mass injection has gained attention due to its potential to reduce cavitation damage effectively. This course introduces numerical methods to evaluate the mechanical properties of injected fluids, their compressibility, and the impact of injection orientation and velocity on cavitation mitigation. A modified INSEAN E779A propeller is analyzed under various conditions to assess the efficiency of air and water injection methods. The study confirms that compressible fluid injection (air) is superior to incompressible fluid injection (water) in terms of energy efficiency and cavitation control. Additionally, the course highlights the importance of dynamic and responsive injection control systems to optimize mass injection strategies.

DOI:

https://doi.org/10.1007/s40997-023-00636-y

The fundamental principles of cavitation, its causes, and its impact on marine propellers.
The application of computational fluid dynamics (CFD) in analyzing and mitigating cavitation.
How different turbulence and cavitation models, such as the k–ω SST turbulence model and Zwart cavitation model, are used in numerical simulations.
The mechanics of mass injection as a cavitation mitigation technique and its effectiveness in reducing cavitation damage.
The comparison between incompressible and compressible fluid injection, including their advantages and limitations.
How to set up and conduct CFD simulations for cavitation analysis using ANSYS Fluent.
The influence of injection velocity, orientation, and flow rate on cavitation control and propeller performance.
Methods for optimizing propeller efficiency while minimizing energy consumption in mass injection systems.
The interpretation of simulation results, including cavitation number, thrust coefficient, and propeller efficiency.
The future of cavitation mitigation technologies and potential research directions in marine propulsion.

Course Content

Module 1: Fundamentals of Cavitation in Marine Propellers
Introduction to cavitation physics Types of cavitation (sheet cavitation, tip vortex cavitation, bubble collapse) Effects of cavitation on marine propulsion systems Conventional mitigation techniques

Module 2: Numerical Modeling of Cavitation Phenomena
Introduction to Computational Fluid Dynamics (CFD) in marine applications Governing equations for cavitation modeling Selection of turbulence and cavitation models Overview of the k–ω SST turbulence model and Zwart cavitation model

Module 3: Mass Injection Method for Cavitation Mitigation
Concept of mass injection and its role in cavitation reduction Incompressible vs. compressible fluid injection (Water vs. Air) Impact of injection velocity and orientation Experimental validation and numerical simulation setup

Module 4: CFD Setup and Simulation in ANSYS Fluent
Mesh generation and refinement for propeller simulations Setting up turbulence and cavitation models in ANSYS Fluent Boundary conditions and solver settings Case study: INSEAN E779A propeller analysis

Module 5: Analyzing Results and Optimization Strategies
Comparing cavitation patterns with and without mass injection Influence of injection velocity and direction Performance assessment: cavitation number, thrust coefficient, efficiency metrics Energy consumption analysis for different injection strategies

Module 6: Practical Applications and Future Research Directions
Application of mass injection in real-world marine propulsion systems Challenges and limitations of current methodologies Future trends in active cavitation control Research gaps and potential improvements in mass injection approaches

Student Ratings & Reviews

No Review Yet

Advanced Cavitation Mitigation Techniques in High-Speed Marine Propellers Using Mass Injection

About Course

Abstract:

DOI:

What Will You Learn?

Course Content

Module 1: Fundamentals of Cavitation in Marine Propellers
Introduction to cavitation physics Types of cavitation (sheet cavitation, tip vortex cavitation, bubble collapse) Effects of cavitation on marine propulsion systems Conventional mitigation techniques

Module 2: Numerical Modeling of Cavitation Phenomena
Introduction to Computational Fluid Dynamics (CFD) in marine applications Governing equations for cavitation modeling Selection of turbulence and cavitation models Overview of the k–ω SST turbulence model and Zwart cavitation model

Module 3: Mass Injection Method for Cavitation Mitigation
Concept of mass injection and its role in cavitation reduction Incompressible vs. compressible fluid injection (Water vs. Air) Impact of injection velocity and orientation Experimental validation and numerical simulation setup

Module 4: CFD Setup and Simulation in ANSYS Fluent
Mesh generation and refinement for propeller simulations Setting up turbulence and cavitation models in ANSYS Fluent Boundary conditions and solver settings Case study: INSEAN E779A propeller analysis

Module 6: Practical Applications and Future Research Directions
Application of mass injection in real-world marine propulsion systems Challenges and limitations of current methodologies Future trends in active cavitation control Research gaps and potential improvements in mass injection approaches

Support

About Course

Abstract:

DOI:

What Will You Learn?

Course Content

Module 1: Fundamentals of Cavitation in Marine Propellers Introduction to cavitation physics Types of cavitation (sheet cavitation, tip vortex cavitation, bubble collapse) Effects of cavitation on marine propulsion systems Conventional mitigation techniques

Module 2: Numerical Modeling of Cavitation Phenomena Introduction to Computational Fluid Dynamics (CFD) in marine applications Governing equations for cavitation modeling Selection of turbulence and cavitation models Overview of the k–ω SST turbulence model and Zwart cavitation model

Module 3: Mass Injection Method for Cavitation Mitigation Concept of mass injection and its role in cavitation reduction Incompressible vs. compressible fluid injection (Water vs. Air) Impact of injection velocity and orientation Experimental validation and numerical simulation setup

Module 4: CFD Setup and Simulation in ANSYS Fluent Mesh generation and refinement for propeller simulations Setting up turbulence and cavitation models in ANSYS Fluent Boundary conditions and solver settings Case study: INSEAN E779A propeller analysis

Module 6: Practical Applications and Future Research Directions Application of mass injection in real-world marine propulsion systems Challenges and limitations of current methodologies Future trends in active cavitation control Research gaps and potential improvements in mass injection approaches

Student Ratings & Reviews

Support

Module 1: Fundamentals of Cavitation in Marine Propellers
Introduction to cavitation physics Types of cavitation (sheet cavitation, tip vortex cavitation, bubble collapse) Effects of cavitation on marine propulsion systems Conventional mitigation techniques

Module 2: Numerical Modeling of Cavitation Phenomena
Introduction to Computational Fluid Dynamics (CFD) in marine applications Governing equations for cavitation modeling Selection of turbulence and cavitation models Overview of the k–ω SST turbulence model and Zwart cavitation model

Module 3: Mass Injection Method for Cavitation Mitigation
Concept of mass injection and its role in cavitation reduction Incompressible vs. compressible fluid injection (Water vs. Air) Impact of injection velocity and orientation Experimental validation and numerical simulation setup

Module 4: CFD Setup and Simulation in ANSYS Fluent
Mesh generation and refinement for propeller simulations Setting up turbulence and cavitation models in ANSYS Fluent Boundary conditions and solver settings Case study: INSEAN E779A propeller analysis

Module 6: Practical Applications and Future Research Directions
Application of mass injection in real-world marine propulsion systems Challenges and limitations of current methodologies Future trends in active cavitation control Research gaps and potential improvements in mass injection approaches