Coursecode: mt511 d1
Coursename: Resistance and Propulsion 1A

DUT creditpoints: 2
ECTS creditpoints: 3

Faculty of Mechanical Engineering and Marine Technology

Lecturer(s): Kuiper, prof.dr.ir. G.

Tel.: 015-2786860

Catalog data:
ship,resistance,propeller,propulsion,waves,cavitation,modeltests,extrapolation

Courseyear: 2
Semester: 2/0/0/0/0
Hours p/w: 2
Other hours:
Assessment: Written
Assessm.period(s): 1, 3
(see academic calendar)

Prerequisites: mt500, wb1124

Follow up: mt515, lr44

Detailed description of topics:

The course starts with the basics of flow phenomena around a ship hull: boundary layers, separation, transition,turbulence, cross-flow in the boundary layer and three-dimensional separation and shedding of vortices. This is translated into elements of ship resistance: frictional-, form- and wave-resistance. These elements are determined from model tests and extrapolated to full scale. The propeller geometry is described and the propeller characteristics at model and full scale. Axial momentum theory is used to define the efficiency. The propulsion tests at model scale is used to determine propeller hull interaction and the extrapolation of the propulsion characteristics to full scale is treated. The use of statistical methods is mentioned. Next propelers are designed using systematic series. Types of cavitation and their detrimental effects are given: erosion, vibrations, noise,thrust breakdown. The wake distribution is described, but in the propeller design methods uniform inflow at one radius is assumed. Propellers are designed using lifting line theory and the basics of profile theory are given. Numerical calculations of the flow around a ship hull are mentioned: potential flow calculations with and without waves. Applications of Navier-Stokes solvers are shortly mentioned.

Course material:

"Resistance and Propulsion of Ships I, report 847K (course notes are in English)

References from literature:

J.N.Newman, Marine Hydrodynamics. The MIT Press, ISBN 0-262-14026-8

Remarks (specific information about assesment, entry requirements, etc.):

The exam is open book. After each exam the answers are distributed. Copies of past exams are available from the student association "William Froude".

Goals:

The course should provide the basic hydrodynamic knowledge to be able to assess the main hydrodynamic features of the design of a ship or propeller.

Computer use:

Some examples of computer programs are given by using the computer during the course.

Laboratory project(s):

Experiments in the Hydrodynamics Laboratory are part of the course. This takes four afternoons. The experiments carried out are resistance and propulsion tests and cavitation observations on a propeller.

Design content:

The course provides the skills for the (preliminary) design of a propeller.

Percentage of design: 25%