Syllabus for |
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| MMA160 - Computational hydrodynamics and optimisation |
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| Syllabus adopted 2010-02-24 by Head of Programme (or corresponding) |
| Owner: MPNAV |
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7,5 Credits |
| Grading: TH - Five, Four, Three, Not passed |
| Education cycle: Second-cycle |
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Major subject: Mechanical Engineering, Shipping and Marine Technology
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Department: 48 - SHIPPING AND MARINE TECHNOLOGY
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Teaching language: English
Minimum participants: 8
Maximum participants: 50
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Credit distribution |
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Examination dates |
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Sp1 |
Sp2 |
Sp3 |
Sp4 |
Summer course |
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| 0102 |
Examination |
7,5 c |
Grading: TH |
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7,5 c
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Contact examiner, |
Contact examiner |
In programs
MPNAV NAVAL ARCHITECTURE, MSC PROGR, Year 1
Examiner:
Professor
Rickard Bensow
Eligibility:
For single subject courses within Chalmers programmes the same eligibility requirements apply, as to the programme(s) that the course is part of.
Course specific prerequisites
Mathematics(including mathematical statistics, numerical analysis and
multi-variable calculus), Mechanics and strength of material and, Fluid
mechanics. Additional course requirements: MMA136 - Ship geometry and
hydrostatics and MMA155 - Ship resistance and propulsion.
Aim
The aim of this course is to make the course participants familiar with the usage of and theory behind modern software used in ship design. The use of CFD is increasing in engineering design due to a need for shorter development times, faster computers and more user friendly software. However, the choice of computational methods and grids are not as easy as the GUI of the software, so in connection with this there is an increasing problem with engineers who can not correctly perform the simulations and interpret the results. This course aims at bridging this gap by letting the participants perform CFD simulations using different techniques and analyze and reflect on the results of the calculations.
Learning outcomes (after completion of the course the student should be able to)
use SHIPFLOW and Fluent, two modern commercial software for CFD predictions
identify difficulties in computing good quality CFD solutions
judge and improve the quality and usefulness of the obtained solution
discuss the basic theory behind CFD softwares using the right terminology
read and discuss scientific literature in the subject
use the parametric CAD software FRIENDSHIP to modify an existing ship hull
discuss basic optimization theory using the right terminology
Content
The course deals with three areas: A) potential flow computations, B) viscous flow computations and C) automatic shape optimisation. The first part of the course introduces potential-flow theory and its extension to three-dimensional panel (BEM) methods with and without a free-surface. Computation of lift and induced drag using potential-flow theory is also included. The potential-flow part of the SHIPFLOW software is introduced and the parametric CAD program FRIENDSHIP is used to modify an existing hull and to generate the geometry description used by SHIPFLOW. Methods for viscous flow computations are introduced in the second part of the course. Special emphasis is on discretisation and numerical solution of viscous flows. The focus is also on mathematical modelling including turbulence models. The CFD software Fluent is introduced and is used to compute the viscous flow Mesh dependency is discussed both for potential-flow and viscous flow computations. Automatic shape optimisation is studied in the third part of the course. Basic optimisation theory is studied for gradient based and genetic optimisation methods. An optimisation environment which includes a parametric CAD model of a ship, a CFD software and an optimisation software is used to optimise an existing hull from a resistance point of view.
Organisation
Teaching is in the form of lectures, tutorials and six mandatory computer assignments.
Literature
See the course home page.
Examination
Approved reports on the computer assignments. Write a report on theoretical issues from the three parts of the course. Present the theoretical report at a seminar and act as opponent for the other presentations. See the course home page for details