+ All Categories
Home > Documents > Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins...

Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins...

Date post: 01-Aug-2020
Category:
Upload: others
View: 3 times
Download: 0 times
Share this document with a friend
16
Blue INNOship Project Controllable Pre-Swirl Fins Jens Ring Nielsen Aft Ship & Propeller 6 September 2018
Transcript
Page 1: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

Blue INNOship ProjectControllable Pre-Swirl Fins

Jens Ring Nielsen

Aft Ship & Propeller

6 September 2018

Page 2: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Pre-Swirl Fins

• Pre-Swirl or Stator fins in front of the propeller have been

known for some time and have been tried recently on a

number of full body ship types like bulkers and tankers

• The fins act as guide vanes that give a pre-swirl into the

propeller and thereby an increase in efficiency

• Drawbacks of existing fins

• Fins reduce the light running and a subsequent

modification to the pitch of the propeller is necessary

• The fins are fixed to the hull and optimised for one

condition only

• The number and setting of fins depends on the actual

condition – i.e. loaded or ballast

• Motivation for Controllable Pre-Swirl Fins (CPSF)

• Can be designed according to the operating profile of

the vessel without the drawbacks of fixed fins – however

on the expense of a higher complexity

Page 3: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

CPSF - Perspective

• Increasing the propulsive efficiency by 3-6%

• Combine CPSF with other Efficiency Improving Devices like

Kappel propellers, Rudder Bulb etc. for further improvements

• Ensure specified light running for different conditions and over time

due to fouling, weather etc.

• Vessel targets are

• Bulker and tanker due to their two distinctive operating

conditions – ballast and design

• Container due to their high loaded propellers at design speed

and low loaded propellers at slow steaming

• Develop a new propulsion Efficiency Improving Device into a

product and the associated services

• Investigations for applying patents

Page 4: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Project definition and objective

• The CPSF is a research project that developed the

theories, methodologies and tools for optimising and

design of controllable fins in order to raise the efficiency

according to the condition the vessel is operating in. The

results will be verified through a series of model tests.

• The project idea distinguish itself from other EIDs by being

adjustable with the purpose that it:

• Can be optimised for different operating conditions like

draft, fouling, sea and weather

• Can be used to cure/minimise the effect of not having

the right light running

Page 5: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Organisation

• Partners

• MAN Energy Solutions, Frederikshavn

• OSK ShipTech

• DTU – Technical University of Denmark

• Maersk Line

• External cooperation partner

• FORCE Technology – model test

• Steering Committee

• Maersk: Christian Rudbech Simonsen, Head of Hydrodynamics

and Performance Analytics

• OSK-ShipTech: Stig Knudsen, Naval Architect - CFD Specialist

• DTU: Jørgen Juncher Jensen, Professor

• MAN: Thomas Leander, Head of Propulsion

Page 6: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Project members

Maersk: Sofia Fürstenberg, Asit Dalai, Kim Henriksen

OSK-ShipTech: Stig Knudsen, Henrik Mikkelsen, Morten Wedel, Anna Bruns, Willy

Maschen

DTU: Poul Andersen, Saettone Simone

MAN: Jens Ring Nielsen, Wei Jin, Mads Hvoldal, Henning Høyer Hansen, Martin

Knudsen

Project budget and timeline

• Total budget 10.2 mil. DKK – funding through Blue INNOship and Orients Fond (OSK)

• Start of project April 2015 - end of project April 2019

Page 7: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Publication and presentations

• Pre-Swirl Stator and Propeller Design for Varying Operating Conditions:

Presented at PRADS2016 Seminar 4th to 8th September 2016

• Business model generation: Presented at INNOship seminar April 4th

2017

• Pre-Swirl goes with the flow: The Naval Architect magazine April 2017

• Pre-Swirl Fins Adapted to Different Operation Conditions: Sixth

International Symposium on Marine Propulsors May 2019 (Paper

Accepted)

Page 8: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Vessel type selected for detailed design and

verification

• Bulk Carrier (Lauritzen)

• Full documentation – model test and full scale

Fin Configuration

• 3 on port side and 1 on starboard side (right handed

propeller)

Optimisation

• Vortex-lattice method (DTU)

• CFD with different turbulence models in self-

propulsion mode (OSK & MAN)

Results

Page 9: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Mechanical Design

• Two types of fins were evaluated – all moving and

flapped

• Complexity, stress analysis and reliability led to

selection of flapped version

Results

Feature Weight Concept 1 Concept 2 Concept 3 Concept 4Total Score 395 481 540 500

Reliability / robustness / simplicity * 10 3 5 7 6

Individual deflection control 6 2 5 7 7

Low manufacturing costs 5

Easy service & maintenance 8 6 8 8 8

High power density / efficiency / gearing 6 6 5 9 6

Suitable for retrofit 8 1 8 8 8

Easy installation (size etc.) 5 3 6 6 6

Deflection span: ±10° * 9 8 9 8 8

Control resolution 6 8 4 6 4

Simple feedback 6 5 5 5 5

Possible to place near propeller 6 8 8 8 8

Few/non holes needed in hull 6 8 5 5 5

Page 10: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Business cases (Preliminary)

8500 TEU Container Vessel

Investment US$ 311.000

Fuel costs US$/ton 450

Annual fuel consumption Tons/year 21.000

Savings from fins % 2.0

Pay Back time years 1.7

Page 11: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Business cases (Preliminary)

110.000 DWT Tanker

Investment US$ 296.000

Fuel costs US$/ton 450

Annual fuel consumption Tons/year 8.000

Savings from fins % 3.5

Pay Back time years 2.5

Page 12: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Project experience

• General

• In a project running for 4 years “change of guards” must be

anticipated – leads to setbacks and delays

• One common SharePoint site led to easy exchange of information

• Project meetings (face to face) twice a year is not sufficient to

ensure progress. Skype meetings were introduced on specific

topics (CFD and mechanical design) to speed up project progress

• Limited resources allocated for a short period of time led to delays

for other partners. However, this was solved by intervention of

Blue INNOship program manager and project manager

• Others

• These kind of products and services will not be developed without

external funding

Page 13: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Future Business perspective

• The project has demonstrated that the concept is technically

conceivable with an expected saving in the order of 3 to 4%

• Business cases show an acceptable pay-back time of 2 to 3 years

• The experience gained through the project in the form of services

(design and optimisation) and the product itself can lead to new

business opportunities for the partners as well as job creation during

design, manufacturing, installation and servicing of this new concept

• The experience and knowledge gained throughout the project will

give the partners a competitive edge with respect to

• Designing innovative and efficient ships and in complying with

increasing market requirements i.e. EEDI - OSK

• Extending the existing propulsion and aft-ship product portfolio –

MAN

• Securing operation of an efficient and environmental fleet for

different conditions – Maersk

• Verifying new optimisation and calculation tools - DTU

Page 14: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN 2019.03.19

Pre-Swirl Fins as a part of MAN’s Efficiency Improving Devices

Page 15: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

JRN

All data provided in this document is non-binding.

This data serves informational purposes only and is especially not guaranteed in any way.

Depending on the subsequent specific individual projects, the relevant data may be subject to changes and

will be assessed and determined individually for each project. This will depend on the particular characteristics

of each individual project, especially specific site and operational conditions.

Disclaimer

2019.03.19

Page 16: Blue INNOship Project Controllable Pre-Swirl Fins · 2019-04-02 · JRN 2019.03.19 Pre-Swirl Fins •Pre-Swirl or Stator fins in front of the propeller have been known for some time

Thank youvery much!

Jens Ring Nielsen

Propeller & Aft Ship

+45 9620 4283

[email protected]


Recommended