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# Skibes fremdrivning og manøvrering (Ship Propulsion and Manoeuvring )

Language

English

Course format On-site
Date 2020-08-31 - 2020-12-04

#### General course objectives

To provide the student with the necessary theoretical background for applying modern scientific methods for analyses of flows with lift, free surface and cavitation, i.e. flows over ships, rudders and propellers. The students will be able carry out hydrodynamic analyses and optimization of propulsion and manoeuvring of ships.

#### Content

Applications include: Potential flows, flow with free surfaces, dynamic lift, cavitation. Flows over ships that sail on a straight course or do horizontal motions, i.e. wave formation, vortices and friction. The course also contains flows over rudders and propellers including dynamic lift, cavitation and pressure pulses. Manoeuvring simulation. The synthesis of applications addresses ship technical operations, i.e. ship propulsion and manoeuvring.

## Prerequisites

##### Recommended prerequisites

41201 Fundamentals of ships and other floating structures.­ 41312 Basic fluid mechanics.­ 01418 Introduction to Partial Differential Equations, Mathematics, including linear algebra, calculus and differential equations; statistics and probability theory; basic naval architecture/ocean engineering; empirical methods for calculation of resistance and propulsion of ships, including propeller theory; applied mathematics (partial differential equations)

## Learning outcomes

A student who has met the objectives of the course will be able to:

• explain potential theory and its application on flows with lift and free surfaces,
• apply potential theory for flows over wings in two dimensions,
• explain cavitation and cavitation properties of hydrodynamic surfaces,
• outline the methods for calculation of cavitation within potential theory,
• apply lifting-line, vortex-lattice and boundary-element methods,
• describe the theory behind the lifting-line method for ship propellers and apply computer programs for design of a wake-adapted propeller,
• apply relevant computer programs for analyses of the flow around hull and propeller in calm water,
• describe the theoretical basis for calculation of wave formation and resistance for a ship that sails in calm water,
• outline the theory for a manoeuvring ship and explain the flow over ship and rudder(s),
• explain model testing techniques for manoeuvring model tests with planar-motion-mechanisme,
• apply relevant computer programs for simulation of ship manouvring and for estimation of the manoeuvrability of the ship.

## ISCED Categories

Physical and chemical oceanography
Statistics
Naval engineering