Transcript Pipelaying example (p 219 Lecture notes)

TMR4225
MARINE OPERATIONS
SPRING 2007
Introduction
1
Introductory issues
• Aim
• Schedule for lectures
– Time and topics
– Monologue versus dialogue
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2
Written material
Language
Exercises
Plan and assistance
Exam
General course information
• Lecturers:
– Professor II Finn Gunnar Nielsen, Norsk Hydro Research Centre,
Bergen
• E-mail : [email protected]
– Professor II Tor Einar Berg, Marintek
• E-mail: [email protected]
• Assistant:
– TBN
• Exercises:
Approx. 6
– Min. 4 required for exam.
– One exercise / project will be graded and count 30% in the final grading.
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Web site: http://www.ivt.ntnu.no/imt/courses/tmr4225/
• EXAM:
3
Wednesday 6 June
Web site
http://www.ivt.ntnu.no/imt/courses/tmr4225/
4
AIM
• Give overview and physical insight into typical marine operations related
to offshore activities.
• Learn how to make order of magnitude estimates of loads and responses.
• Understand background for more advanced numerical methods.
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Marine operations. Themes
• Temporary duration
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Towing
Lifting
Launching
Pipelaying
Bottom surveys
ROV operations
Spill recovery
….
• Weather limitation
– Dynamics
– Operability
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Literature
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Nielsen, F.G.: "Marine Operations. Lecture Notes" (Jan. 2007)
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Berg, T. E.: ."Marine Operations - Subsea Vehicles. Lecture Notes“
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Faltinsen, O.M. "Sealoads on Ships and Offshore Structures
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Handouts.
Schedule (1:2)
Week Lect.
Date Topic
No. No.
2
Thurs. Introduction,
11.01 Underwater
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vehicles
4
4
5
5
6
7
7
8
8
9
10
2
3
4
5
6
7
8
Wedn.
24.01
Thurs.
25.01
Wedn
31.01
Thurs.
01.02
Wedn.
14.02
Thurs.
15.02
Thurs.
22.02
Content
Introduction to the course. Examples of marine operations and
UV manoeuvring.
Examples of submarines, ROVs and AUVs. Work tasks for
ROVs and AUVs in offshore operations.
AUV /ROV
AUV hydrodynamics and Hugin operational experience.
Rules &
Planning.
Overview of rules and regulations. Criteria for operation.
Weather windows. Simulation of operations.
Towing. Propeller forces. Towlines, restoring forces, dynamic
loads.
Examples of heavy lift vessels and operations. Multi-body
dynamics. Static and dynamic response of simple systems.
Towing.
Crane
operations
Crane
operations
Crane
dynamics
Dynamic
stability
Lifting in deep water. Wire dynamics. Advanced simulation
tools.
Dynamics of a body hanging above and in water. Mathieu
instability. Heave compensation.
Hydrodynamics of ROV. Directional stability
“Tiltaksuke”
“Tiltaksuke”
Schedule (2:2)
11
12
12
13
14
15
16
17
9
10
11
12
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17
14
23
9
Thurs.
ROV
15.03
Wedn.
Water entry.
21.03
Thurs.
Water entry.
22.03
Simulation of ROV operations and ROV pilot training
Hydrodynamic forces on a body crossing the wave zone and
close to bottom. Hydrodynamic coefficients.
Hydrodynamic coefficients continued. Effect of perforation.
Easter
Thurs. Project
Project Due.
12.04 presentations Short oral presentations of “project exercises”.
Wedn.
Water entry
25.04
Thurs. Statistics.
26.04 Pipelaying.
Summary
Wedn
06.06
Dynamics during crossing splash zone. Examples
The probability of snap loads / impact during lift off
Pipelaying in deep water.
Summary of course, feedback.
EXAM
Time and place for lectures
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Lecture no.
Date
Time
Place
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2
3
4
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6
7
8
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12
13
14
Thurs.11.01
Wedn. 24.01
Thurs .25.01
Wedn. 31.01
Thurs. 01.02
Wedn. 14.02
Thurs. 15.02
Thurs. 22.02
Thurs. 15.03
Wedn. 21.03
Thurs. 22.03
Thurs. 12.04
Wedn. 25.04
Thurs. 26.04
1015 –1300
1515 –1800
1015 –1300
1515 –1800
1015 –1300
1515 –1800
1015 –1300
1015 –1300
1015 –1300
1515 –1800
1015 –1300
1015 –1300
1515 –1800
1015 –1300
T1
T2
T1
T2
T1
T2
T1
T1
T1
T2
T1
T1
T2
T1
Lecturer
FGN / TEB
TEB
FGN
FGN
FGN
FGN
FGN
TEB
TEB
FGN
FGN
FGN/TEB/All
FGN
FGN
PRELIMINARY LIST OF EXERCISES:
Exercise Week
Topic
Given
Due
___No._____No.________________________________________________(Week No.)____
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2
3
4
5
6
3
5
7
11
13
15
AUV hydrodynamics
Towing
Crane dynamics
ROV hydrodynamics
Water entry
Crane dynamics
“Project Exercise”, Mandatory group work: Starts week 8 ends week 15.
11
5
7
11
13
15
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Marine operations - challenges
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Deep water
More subsea equipment
Requirements on costs and regularity
Harsh environment
– Heavy seas
– Arctic environment
• Needed: people with knowledge about
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Dynamics
System modelling
Statistics
Current practice