Knowledge and understanding
The course aims to provide the student with a methodological and state-of-art approach to the hydrodynamic problem of powering prediction of a conventional ship by means of model scale tests, approach that is based on the understanding of the hydrodynamic phenomena that characterize the hull, the propeller and their coupling.

Applying knowledge and understanding
The student will be able to apply the material learned during the course, via detailed and exhaustive discussions in class on the theory developed during the course.

Making judgements
The student will be able to analyze autonomously and in a critic way the data provided by the scale model tests for the powering prediction.

Communication skills
The methodological approach adopted in this course will allow the student to tackle the subjects of the course with criticism, even with autonomous research and use of reference scientific literature.

Learning skills
The methodological approach adopted in this course will allow the student to understand and deepen the topics of the course critically and autonomously, also consulting the existing literature, of a technical and scientific type.

Basic knowledge of hydrodynamics and programming is suggested.

1. INTRODUCTION AND SCOPE OF COURSE

2. RECALL OF FUNDAMENTALS OF HYDRODYNAMICS
2.1 MATHEMATICAL MODELS FOR INCOMPRESSIBLE FREE SURFACE FLOWS: MASS AND MOMENTUM CONSERVATION LAWS; VISCOUS AND INVISCID FLOWS
2.2 DIMENSIONAL ANALYSIS AND MODEL TESTING
2.3 RESISTANCE COMPONENTS: PRESSURE AND FRICTION COMPONENTS
2.4 FROUDE's METHOD
2.5 RECALL OF LINEAR WAVE THEORY

3. POWERING PREDICTION IN CALM WATER VIA FROUDE's METHOD
3.1 MODEL SCALE TESTS
3.1.1 SET-UP AND STANDARD PROCEDURES OF MODEL SCALE TESTS ACCORDING TO FROUDE's METHOD
3.1.2 FORMULAS FOR THE EQUIVALENT FLAT PLATE VISCOUS RESISTANCE
3.2 ITTC STANDARD PROCEDURES
3.2.1 ITTC’57 METHOD
3.2.2 ITTC’78 METHOD - FORM FACTOR
3.2.3 PRESENTATION OF THE RESULTS OF FROUDE's METHOD
3.2.4 GEOSIM
3.3 ANALYSIS OF THE RESISTANCE COMPONENTS OF A SURFACE SHIP: FRICTION AND RESIDUARY COMPONENTS, VISCOUS AND WAVE COMPONENTS
3.3.1 VISCOUS RESSTANCE
3.3.1.1 THEORETICAL PREDICTION OF FLAT PLATE RESISTANCE IN LAMINAR AND TURBULENT FLOW
3.3.1.2 FORM EFFECT
3.3.2 WAVE RESISTANCE
3.3.2.1 WAVE PATTERN
3.3.2.2 INTERFERENCE EFECTS
3.3.2.3 KELVIN WAVE PATTERN

4. PROPULSION OF SHIPS BY SCREW PROPELLERS
4.1 SCREW PROPELLER
4.1.1 GEOMETRY
4.1.2 PERFORMANCES OF HYDROFOILS
4.1.3 OPEN WATER PERFORMANCE OF A SCREW PROPELLER
4.1.3.1 DIMENSIONAL ANALYSIS
4.1.3.2 SIMPLIFIED MATHEMATICAL MODEL FOR PROPELLER PERFORMANCE
4.1.3.3 OPEN WATER DATA OF SCREW PROPELLERS
4.1.3.4 IDENTIFICATION OF THE PROPELLER PARAMETERS
4.1.3.5 MAIN SYSTEMATIC SERIES (B-WAGENINGEN)
4.1.3.6 SELECTION OF THE BEST PERFORMING PROPELLER AMONG A SERIES
4.1.3.7 CAVITATION
4.2 HULL - PROPELLER COUPLING
4.2.1 PROPELLER BEHAVIOR BEHIND THE HULL
4.2.1.1 HULL WAKE
4.2.1.2 SELF-PROPULSION MODEL TESTS

1. Fundamentals of ship hydrodynamics: fluid mechanics, ship resistance and propulsion, Lotar Birk, John Wiley & Sons, Ltd, 2019.
2. Principles of Naval Architecture, Lars Larsson and Hoyte C. Raven, J. Randolph Paulling Editor, 2010.
3. Marine Propellers and Propulsion, J S Carlton, Butterworth-Heinemann, Second Edition, 2007.
4. Resistance and Propulsion of Ships, Sv. Aa. Harvald, John Wiley and Sons, 1984.

1. INTRODUCTION AND SCOPE OF COURSE

2. RECALL OF FUNDAMENTALS OF HYDRODYNAMICS
2.1 MATHEMATICAL MODELS FOR INCOMPRESSIBLE FREE SURFACE FLOWS: MASS AND MOMENTUM CONSERVATION LAWS; VISCOUS AND INVISCID FLOWS
2.2 DIMENSIONAL ANALYSIS AND MODEL TESTING
2.3 RESISTANCE COMPONENTS: PRESSURE AND FRICTION COMPONENTS
2.4 FROUDE's METHOD
2.5 RECALL OF LINEAR WAVE THEORY

3. POWERING PREDICTION IN CALM WATER VIA FROUDE's METHOD
3.1 MODEL SCALE TESTS
3.1.1 SET-UP AND STANDARD PROCEDURES OF MODEL SCALE TESTS ACCORDING TO FROUDE's METHOD
3.1.2 FORMULAS FOR THE EQUIVALENT FLAT PLATE VISCOUS RESISTANCE
3.2 ITTC STANDARD PROCEDURES
3.2.1 ITTC’57 METHOD
3.2.2 ITTC’78 METHOD - FORM FACTOR
3.2.3 PRESENTATION OF THE RESULTS OF FROUDE's METHOD
3.2.4 GEOSIM
3.3 ANALYSIS OF THE RESISTANCE COMPONENTS OF A SURFACE SHIP: FRICTION AND RESIDUARY COMPONENTS, VISCOUS AND WAVE COMPONENTS
3.3.1 VISCOUS RESSTANCE
3.3.1.1 THEORETICAL PREDICTION OF FLAT PLATE RESISTANCE IN LAMINAR AND TURBULENT FLOW
3.3.1.2 FORM EFFECT
3.3.2 WAVE RESISTANCE
3.3.2.1 WAVE PATTERN
3.3.2.2 INTERFERENCE EFECTS
3.3.2.3 KELVIN WAVE PATTERN

4. PROPULSION OF SHIPS BY SCREW PROPELLERS
4.1 SCREW PROPELLER
4.1.1 GEOMETRY
4.1.2 PERFORMANCES OF HYDROFOILS
4.1.3 OPEN WATER PERFORMANCE OF A SCREW PROPELLER
4.1.3.1 DIMENSIONAL ANALYSIS
4.1.3.2 SIMPLIFIED MATHEMATICAL MODEL FOR PROPELLER PERFORMANCE
4.1.3.3 OPEN WATER DATA OF SCREW PROPELLERS
4.1.3.4 IDENTIFICATION OF THE PROPELLER PARAMETERS
4.1.3.5 MAIN SYSTEMATIC SERIES (B-WAGENINGEN)
4.1.3.6 SELECTION OF THE BEST PERFORMING PROPELLER AMONG A SERIES
4.1.3.7 CAVITATION
4.2 HULL - PROPELLER COUPLING
4.2.1 PROPELLER BEHAVIOR BEHIND THE HULL
4.2.1.1 HULL WAKE
4.2.1.2 SELF-PROPULSION MODEL TESTS

Class work, either lectures, seminars from professionals/researchers or exercises.
Lectures materials are made available through MOODLE2 of University of Trieste.

The final examination is of oral type. It is based on at least three questions regarding the topics addressed during the course (theory and classroom exercises).