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The University of Southampton
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SESS2020 Ship Resistance and Propulsion

Module Overview

This module provides the fundamental aspects as well as practical considerations for ship resistance and associated powering requirements, propeller design and engine selection. To support the understanding of the concepts and their applications taught in the lectures, there are two laboratories and one assignment in this module.

Aims and Objectives

Learning Outcomes

Knowledge and Understanding

Having successfully completed this module, you will be able to demonstrate knowledge and understanding of:

  • The components of ship resistance. (Contributing to EAB accreditation LOs: SM1)
  • The estimation of the resistance of a ship or marine vehicle. (Contributing to EAB accreditation LOs: SM1, EA3)
  • The operation of marine propulsion devices. (Contributing to EAB accreditation LOs: SM1)
  • The design of a propeller. . (Contributing to EAB accreditation LOs: EA1, EA3, D1)
  • The components of propulsive efficiency and estimation. (Contributing to EAB accreditation LOs: SM1, EA1, EA3)
  • The estimation of the delivered power of a ship or marine vehicle. (Contributing to EAB accreditation LOs: SM1)
  • The selection of main engine and propeller engine matching. (Contributing to EAB accreditation LOs: SM1, EA3, D1)
Subject Specific Intellectual and Research Skills

Having successfully completed this module you will be able to:

  • Analyse the powering requirements of a ship or marine vehicle based on your understanding of the physical nature of the fluid flow around the vessel. (Contributing to EAB accreditation LOs: EA1, EA3)
  • Design propeller and select engine to fulfil the service requirements of ship or marine vehicle. (Contributing to EAB accreditation LOs: D1, EL2, P1, P2)
Transferable and Generic Skills

Having successfully completed this module you will be able to:

  • Use simple mathematical models, computational tools and empirical evidence to derive engineering estimates of physical quantities. (Contributing to EAB accreditation LOs: EA1, EA2, P1)
  • Use small-scale physical models to deduce full-scale quantities through a combination of testing and analysis based on first principles. (Contributing to EAB accreditation LOs: EA1, EA2, P1, P2, P3)
  • Evaluate alternative models (e.g. analytical, computational, and physical) to determine the most appropriate for solving a specified engineering task. (Contributing to EAB accreditation LOs: P1, P2, P3)
Subject Specific Practical Skills

Having successfully completed this module you will be able to:

  • Apply your understanding of the physical components of ship resistance to estimate the resistance of a ship or marine vehicle. (Contributing to EAB accreditation LOs: D1, EL2, G1, G3, G4)
  • Use your understanding of a marine propeller in order to carry out a simple propeller design. (Contributing to EAB accreditation LOs: G1, G2, G3)
  • Apply your knowledge of the components of propulsive efficiency to estimate the delivered power of a ship or marine vehicle. (Contributing to EAB accreditation LOs: EA1, EA3, G2, G3)

Syllabus

General introduction to ship resistance and propulsion and definitions. • Physical components of ship resistance. • Dimensional analysis and scaling. • Practical scaling methods: CT = CF + CR and CT = (1+k) CF + CW • Systems of coefficients used in ship powering. • Boundary layer and friction. • Flat plate friction formulae: Froude, Schoenherr and I.T.T.C. • Geosim series: description and applications. • Wave resistance: general principles: wave system interference and cancellation. • Standard series data: Taylor-Gertler, BSRA series - description and applications; references to other series. • Regression analysis techniques: discussion and references. • General survey of propulsion devices. • Definitions and brief description of the components of propulsive efficiency. • Marine propeller geometry and design parameters. • Dimensional analysis and propeller coefficients. • Standard series propeller design charts:KT-KQ; description, applications and examples. • Cavitation: outline of origins and effects; preliminary cavitation criterion and choice of blade area ratio. • The analysis of wake: self-propulsion tests and derivation of wT, t, nR and QPC. • Overview of main engine selection considerations. • Introduction to ship power train components. Stern tubes, shafts, bearings. • Propeller engine matching.

Learning and Teaching

Teaching and learning methods

Teaching methods include • Lectures, tutorials, • One 3 hour towing tank experiment • One 3 hour boundary layer laboratory work • One ship powering assignment Learning activities include • Self-learning through reading and study • Directed problem solving exercises • Ship resistance experiment in a towing tank • Observation and measurement of boundary layer in the fluid laboratory • Report writing for the Lab and course work assignment

TypeHours
Tutorial7
Lecture35
Follow-up work6
Completion of assessment task12
Revision13
Preparation for scheduled sessions6
Supervised time in studio/workshop6
Wider reading or practice65
Total study time150

Resources & Reading list

Details of the reading list and relevant texts can be found on the Blackboard site for this module. 

Assessment

Summative

MethodPercentage contribution
Coursework assignment(s) 10%
Examination  (120 minutes) 70%
Laboratory Report 10%
Laboratory Report 10%

Repeat

MethodPercentage contribution
Examination  (120 minutes) 100%

Referral

MethodPercentage contribution
Examination  (120 minutes) 100%

Repeat Information

Repeat type: Internal & External

Linked modules

Pre requisites: FEEG1001 and FEEG1002 and FEEG1003 and FEEG1004

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