the myanmar na vol1 no4

1 The Myanmar NA Online Journal

EMShip Program

ဝ

EMShip Program

EMShip ဂၢ Erasmus Mundus Master Program

EMShip ဂ University of Liege Ecole Centrale de Nantes Ship design CFD/Hydrodynamics

University of Galati ၊ University of Genoa၊ ဂ University of Rockstock ၊

West Pomeranian University of Technology ICAM

( ၂ )

- MMU ႕ ဝ EMSHIP

- ဝ

- ဝ

- ၁၈၆ ၂ ၁ ဝ

- `

– Hydrodynamics William Froude ဝ ဝ

- HYDRODYNAMICS ႕ ဝ

- ၂

(၁) (၄) ၂ ၁၄

၂ ၁၄ ဝ


EMShip Program

EMShip ႕ ( ) ၂ ႕

ဂ University of Liege coordinator Ecole Centrale de Nantes၊ University of Galati ၊ University of Genoa၊ ဂ University of Rockstock ၊ West Pomeranian University of Technology

ဂ ၁၈ semester ၃ EMShip ဂ University of Liege Ecole Centrale de Nantes

Master coursework

University of Liege Ecole Centrale de Nantes Integrated Master in Ship Design ULG ECN

credit ၉ lectures၊ assignments၊ coursework internship ULG 25 credit

1. Ship Theory (static, dynamics and propulsion) 2. Ship Structures & Ship Production 3. Project for Ship Design 4. Design of High Speed Vessels

“ ”

“ ”

ဂၢ

၊ ၊

ဂၢ ၊ ၊

၊

၊

ဂ Band

Unity Fair

Dancing Club

“ ”

“ ”

“ ”

၊

Presentation ၊ Model

ဂ Innovative Idea

ဂ

( ) Panel Discussion ၊

NA ဂ


5. Ship Equipment & Diesel Engines

၊ assignment

ECN 25 credit

1. Water Waves and Sea States Models for Ship Design 2. Seakeeping 3. CFD for Ship Hydrodynamics 4. Multi-Objective Optimization for Ship Design 5. Experimental Ship Hydrodynamics

SAB (Strategic Advisory Board) meeting ULG

1. University of Galati (UGAL) Manoeuvring & Ship Propulsion

2. University of Genoa (UNIGE) Sailing Yacht & Motor Yacht

3. University of Rostock (URO) ဂ Ship Production, CAD & Information Technology

4. West Pomeranian University of Technology Ship Structures

5. Insti u C iqu ’ s Mé i s i N n s C M Composite Structures for Naval and Wind Turbine Applications

EMShip webpage s i u user account form upload assessment fees

EMShip program master program naval architecture/ship design Engineering

mechanical civil Naval Architecture research structure CFD/Hydrodynamics ၂ Mechanical civil structure, finite element, fluid mechanics CFD EMSHip

EMShip in n i n ဂ ဂ TOEFL ( ) TOEFL 550 points computerized TOEFL 213 points IELTS overall band 6 IELTS TOFEL

၁ ၃၁ www.emship.eu / email ၊

EMShip un in motivation letter ၊ ႕ ဂ ၊

EU Category A Category B ၂ Category A n n- u n ၊ Category A ၆ ႕ MM ၃ ၂ ၁၄ 8th batch Category A scholarship ၊ € 8000 ၊ € 1000 (၁၈ €18000) ၉ EMShip program partner university ဂ ၊

MMU


EU main scholarship University of Liege ၃ €850 €2000 Industrial scholarship BV inland navigation €1200 EMShip ၊

EMShip Program Schedule

( ULG admission letter scholarship certificate Belgium website email ၊ http://countries.diplomatie.belgium.be/en/thailand/ ၊ ၊ i i N seal

short stay ဂ ( ) ဂ long stay Schengen visa ဂ Short stay visa ဂ Liege

၁ EMShip program ၂ induction ၊ ၊ i i i s Liege Nantes

SAB meeting SAB meeting EMShip program EMShip n us i n s

႕ ၊ ႕ n us i n program ၊ industry ႕ ၊ presentation ၊ internship / ၊ ဂ SAB meeting ဂ presentation SAB meeting

(၁) EMShip program ႕ ECN Hydrodynamics CFD towing tank, wave basin ၊ assignment ဂ ၊ project proposal report

ဂ module ဂ ဂ presentation ၊ ၊ SAB meeting ၊ ဂ

Liege & University of Liege

Liege ဂ Wallone ဂ Brussels ၆ ဂ ၂ i Brussels

University of Liege ၁၈၁၇ ၂ ၉ EMShip ANAST(Naval Architecture, Inland Navigation & Transportation) Facul i i n ၊ inland navigation & logistics ၊ Hydraulic Locks


material testing lab ၁ towing tank

ss i i i EMShip coordinator Professor Rigo ultimate strength structural optimization LBR-5 simplex method structural optimization software ANAST si

www.anast.ulg.ac.be/index.php/en

Liege ၊ coordinator Sart-Tilman campus ၁ campus administration € 300 00 canteen € 3 ၊ McDonald, KFC €5 €10 €700 Liege ၉ city administration si n i bank account ၊ s s i induction week coordinator

Nantes & Ecole Centrale de Nantes

N n s ၂၄ TGV ၂

Ecole Centrale de Nantes engineering school Faculty EMShip program Fluid Mechanics and Energetics Department Hydrodynamics CFD Towing tank ၊ x၃ x ၄၈ independent multiflap wave maker oceanic wave basin develop potential flow codes၊ SPH (smooth particle n i s s MMU swiber ဂ PAPE Principia Hydrodynamics s ECN develop

campus (Tram lin €300 400 CAF ၄ ၆ ဂ

http://www.anast.ulg.ac.be/index.php/en


EMShip program EMShip ၆ in exchange ႕ ၊ EMShip program i i EMShip activities

FEM Fluid mechanics Matlab software ULG ဂ ဂ

“ s i u” NA online journal

ဝ

ဝ ၊ ဝ

Naval Architect ဂ

၊

ဝ ဂ

႕ ၊

၊ ႕

႕

႕ [email protected]

mailto:[email protected]


( ) ဝ

n sis ၊

Quantitative Analysis Qualitative Analysis

Quantitative Analysis ( )

၊

Qualitative Analysis

Activity

Relationship Chart (REL) Qualitative Analysis

u n i i n sis

Qualitative Analysis

၊

Activity Relationship Chart (REL)

၊

၊ ႕ ၊

(၂)

၄ ၊

A Absolutely necessary

Block Storage Area Erection Area

Block

၊ Blocks

i n

` ´

E Especially Important

Pipe Shop Outfitting E

၄ ၁

I n Painting

Ware House

၄

I ၁

in C s n ss

ဂ

၄ ၂ U ni n

(Steel

Stock Yard) ဂ X n si

(၂) Activity Relationship Chart (REL)

(၃) Activity

Relationship Layout (၃)

၊ ၊

A ၊ E၊

I ၊ O ၊ X

(၄)

Layout ( )

Layout


Layout u

(၃) Activity Relationship Layout

(၃.၁) Activity Relationship Layout

(၃)

(Repeatable) ႕

Interim Product

Capacity


၁၉၈၉ M.Sc ၄

(၃)

(

)

(၄ (Space) Activity Relationship Layout

( )


(၃)


(၆) Space Relationship (၇) Layout

(၆ Space Relationship

(၇)

(၄)


၊

၊

A steel Stock Yard

A steel Work Hall

An outfitting center

A unit block storage area

An erection area

A docking area

A machine shop

An electrical shop

A carpenter shop

An afloat repair shop

A treatment plant

Pipe shop ( )

)

s )

A paint shop

A warehouse

Lifting installations

Administrative offices

Technical services

Health and medical service

Training center

Transportation station and parking

Catering services

(၂) (၃)

၂

(၈)

(၈)

ဝ


ဝ

“ ”

“ ”

“ ”

“ … ”

“ lecture ၊ ”

“ ၊ ”

“ Titanic stability stability material material navigation navigation ”

“ ”

“ titanic ”

“၁၉၁၂ titanic ”

“ ၁၉၁၂ ၁၄-၁ ၊ ၁၄ ၊ ၊ ”

“ ”

“ … wireless operator u n is titanic maximum speed ”

speed

“ 0 n s ”

“ 24knots speed 22.5 knots ”

႕ screen ( - ၁)

“ sea trial crush stop test ႕ crush stop ”

crush stop

u s engine reverse

(၁)


u s s n

“ crush stop ၇၇၇ ၃ ၁ ၊ ၊ ice berge crush stop ၊ bow reverse rudder rudder effective maneuvering rudder effective ၂ rudder ၁၈ technical development ဝ titanic propeller ”

twin screw

“ naval architect triple screw၊ stem engine steam turbine stem engine reverse steam turbine reverse reverse rudder ႕ effective propeller-rudder interaction reverse ႕ ႕ starboard titanic watertight bulkhead ”

“

watertight bulkhead ၁ watertight compartment ၁၆ titanic s i i i i ”

“ ”

“ titanic ႕ ဝ ၂ ”

( -၂)

“ C i

u ၊ ၁ watertight bulkhead

water line

u horizontally

watertight ႕

၊ ႕ 7 1 n n

႕ u

႕

”

(၃)

(၂)


(၃)

“ titanic u u ႕ 7.1long ton per second material ” ( - ၄)

(၄)

“ rivet material ductile to brittle transition temperature ”

material i ductile brittle

temperature ductile to brittle transition temperature

“ ” ( )

( )

“Material ductile deform ၊ brit titanic hull material ductile to brittle transition temperature ၃၂ ဂ ဂ ၂ ဂ ဂ i ”

“ ( - ) titanic steel ၊ steel Charpy Test titanic steel


steel၊ titanic ၊ titanic ဝ ”

ဂ

“ titanic mari i rule and regulation SOLAS Design double bottom Metallurgy shipbuilding steel si i n ductile to brittle transition temperature ”

“ ”

( )

Work Cited:

http://www.hsctut.materials.unsw.edu.au/Crack%20Theory/cracktheory3b.htm

www.wikipedia.com

http://www.titanic-facts.net/p/sinking-of-titanic.html

http://www.writing.eng.vt.edu/uer/bassett.html

http://www.titanicuniverse.com/titanic-sinks

Photo Knowledge

Osborne Reynolds

HMS Devastation, used for Froude’s rolling trials

Froude Towing Tank at Torquay

i n M n i ns ၊

႕ ( ႕)



http://www.wikipedia.com/

http://www.titanic-facts.net/p/sinking-of-titanic.html

http://www.writing.eng.vt.edu/uer/bassett.html

http://www.titanicuniverse.com/titanic-sinks


Some Significant changes in ship design and construction between

1860 and 2010 ဝ

RINA ႕ ၁ ဝ ၁ ႕ ၊ ႕ ႕

(၁) Mi (Bulk manufacture of cheap mild steel)

၁၈၈ Wrought iron Mi s

႕ ဝ

(၂) ႕ (Steam

Turbine) ၁၈၉၄ ၁၂ ၊

၊

(၃) ဂ

(Seagoing diesel engine) ၁၉၁ ဂ

(၄) (Electric Light) ၁၈၈ ဂ

႕ ႕ ဝ

( ) (Anti-Fouling

coatings)

၁၉၆ ဝ ဝ ) Added resistance

(၆) (Model

Testing)

၁၈၇ ဝ Resistance ၊

ဝ ႕

(၇) (International Agreements)

Load Line Conventions ႕

(၈) ဂ (Welding) ၁၉၁ ဂ i structures ၁၉၃ ၊ ၊ ႕ ဝ ဂ

(၉)

(Standardization of container dimensions)

၁၉၆ ႕

(၁ ) Hatch cover ၁၉၃

(၁၁) (Progressive development of

specialized vessels)

၁၈၈ Refrigerated ships, tankers, ore carriers, roll-on/roll-off ships, chemical tankers, bulk carriers, container ships, Liquefied gas carriers

(၁၂) (Computer Aided Design)

၁၉၆ ၊ ႕

(၁၃) (Fiber Reinforced

plastics) ၁၉၆

(၁၄)

ဝ

၁၉၇


(၁ )

(The establishment of professional institutions)

၁၈၆ ssi i i n s i i s ၊ ဂ ႕ ႕ ႕

(၁၆) (Carriage of liquids

in bulk)

၁၈၈ ၊ ၊ ၊

ဂ ႕ ႕ ဂ ႕ ႕ ၊ ႕ ႕ ႕ ႕ ဝ ဂ ႕ ` ႕ ဝ ႕ Naval Architect ဂ ဂၢ ႕ ဝ ႕ ဝ ႕ ႕

Naval Architect ဂ ႕

႕ ႕

( ႕ ) ႕ ဝ `၊ `၊ ` `၊ ` ` ၊ ဝ ႕ ႕ ဝ

႕ ႕

႕ ႕ ဝ ၊ ဝ ဝ

၁၉၇၉ ဂၢ

` ` ၊ ̀ ဂ ႕ ႕ ႕ ႕ ႕ ႕ ႕ ႕ ႕ ႕ ၊ ႕ ဝ `

႕ ၊ ၊ ဝ

႕ ႕ ၊ ႕ ဂၢ ႕

ဂၢ ( ) ( ) ႕ ႕ ဂ


၊ ( ) ႕ ၊ ၊ ( ၊ ႕ ၊ ) ႕ ၊ ၊ ႕) ၊ ႕) ႕ ၊ ႕

၊ ၊ ၊ ႕ ( )

၁၃၄၁ ၊ ႕ ၁၃

႕

၁၉၈

ဝ ၂၉

…………………………………………………………………………………………………………………………………………………………………………………………………………………

(၁)


႕

႕ ၊ ႕ ႕ ႕

႕ ၊

ဝ ၊ ဝ ၊ ၊ ၊ ၊ ၊

၊ ၊ ၊ ၊ ၊ ၊ ႕ ၊ ၊ ၊ ၊ ၊ ၊ ၊ ၊ ၊ ႕ ၊ ၊ ၊ ၊ ၊ ၊ ၊ ဂဂ ၊ ၊ ၊ ၊ ဝ ၊ ၊ ၊ ဂ ဝ ၊

` ၊

႕ ဂ ၊ ၊ ႕၊ ၊ ၊ ၊ ၊ ၊ ၊ ၃၇ ၊ ၊ ဂ

ဂ ႕

` ႕ ` ၊

၁ ၄ ` ( ဝ ၊ ၊ ၁ ၈ )]

ဝ ၇ ၄ ၁ ၊ ၈ ႕

႕ ၁၁၁၇ ဝ ႕

႕ ၊ ၊ ၊ ၊ ၊ ၊ ၊ ၊ ၊ ၊ `

` ဝ ဝ ႕ ႕ ႕ ၄ ၁, ၊ ဝ ၂ ̀ ၊

႕ ႕

` ႕ ဝ ဝ ႕ ၁ ၁ ၁ ဝ ` ` `

႕ ႕ ဝ ဝ `

` ၂၆ ႕ ၇ `

` ႕ ၄ ၂ ႕ ၂၁ `

` ၁၂၄၂ ဝ ႕ ဝ ဝ ႕ `

` ဝ ႕ ႕ ႕


႕ ဝ ၃ ၁ ၁ ၈ ၁ ႕ `

`၄ ၄၆၆ ႕ ၄၇၈၉၉ ̀

႕ ဝ ဂ ႕

႕ ႕ ဝ ႕ ဝ

၂၆၈ ဂ ႕ ဂ ႕ ႕ ဝ

႕ ႕ ႕ ဝ ႕ ဝ ၊ ၊ ၊

႕ ႕

ဝ ႕ ႕ ႕ ၊ ဝ ႕ ဝ ဝ ႕ ၊ ၊ ၊ ၊ ၊ ႕

(

( )

(ဂ)

(ဃ)

႕ ႕

( ႕

( ) ႕

(ဂ) ႕

(ဃ) ႕

၊ ` ႕ `

၃ ဝ ၁ ံ`

၆ ဝ ၁ `

ဝ ဝ ဝ ၄ `

` ႕ ၄ ႕ ၃ ႕ ၊ ဂဂ ၊ ႕ ႕ ၁၁၂၆ ႕ ႕ ႕ ဂဂ ႕ ႕ ႕

` ၊ ၁ ၁ ၊ ၁ ၁ ႕ ` ၊

` ႕ ဂ ႕ ႕ ႕ ႕ ၄

` ၁ ၁ ံ၊ ၂ ံ၊ ၁ ၁ ဝ `

[` ႕ ̀

၊

၊ ဂ

( ၁၊ ၂၊ ၁၉၆၈)]

႕

ဝ ၊ ဝ ႕၊ ၊ ၊ ႕


(၂)

` ႕ ၊ ၊ ႕ ဝ ဂ ၊ ႕ ႕ ၊ ႕ ၊ `

` ႕ ၊ ႕ ႕ ၊ ၊ ႕ ႕ ၊ ၊ ၊ ၊ ႕ `

` ႕ `

` ၊ ၊ ဝ ၊ ၊ ၊ ၊ ႕ ႕ ႕ ̀

` ႕ ႕ ၊ ၊ ႕ ၊ `

႕ ႕ ႕ ႕

႕

႕ ဂ ႕

ဂ ႕ ဝ

` ႕ ၊ ၊ ၊ ႕ ၊ ၊ ဝ ႕ ႕ ၊ ႕ ဝ ႕ ႕ ၊ ႕ `

( ) ႕ [၁၉၆၇

၊ ၊ ႕ ၊ ႕ ( ၊ ၊ ၊ ဂ ၊ ) ႕ ၊ ဝ ဝ၊ ဝ ( ၊ ၊ ) ႕ ႕ ဝ

႕ ႕ ၊ ႕ ႕ ၊ ၊ ဝ

႕ ႕ ႕ ဝ ` ` `

႕ ၊ ၊ ၊


(၃)

ဝ

ဝ

"

ဝ ၊ ၄ ၈)

၊ ၊ ဝ ၊

"( ) =

( ) = ) = "

(' ဝ '၊ ဂ ၊ ၁၊ ၂၊ ၁၉၆၈ )

႕

" ၊ "

" ၊ "

( ဝ

ဝ ဝ ႕

၊ ၊ ဝ ၊ ဝ ၊ "

ဝ

ဝ ႕ ၊ ၊ ၊ ဝ

' ၊ '

ဝ ၊ ဂ ၊ ဝ ဝ ဝ ၊

၊ ၊ ဂ ၊ ၊ ၊ ၊ ၊ ႕ ၊ ဝ

၊ ဝ

႕ " ႕ " ဝ ႕ ဝ " ႕ " ႕ "

၊ ၊ ဝ ၊ ၊ ( ႕ ) ႕ ( )

၊ ဝ ၊

႕ ဝ

( )


၊ ဝ ၊ ၊ )

ဝ ၊ ( )

( )

႕ )

႕ ႕ ႕ ႕

( )

i i u ဝ ဝ

Froude Hydrodynamics ႕ Froude ႕ ... ဝ ႕

(D.K. Brown FRINA and R. Eatock Taylor FRINA ႕ A Brief Sketch i i u ’s i n C n i u i n )

(၁)

ဝ ၁၈၁ Dartington Parsonage ႕ ႕ ဝ ဝ ဝ ႕ ႕ ဝ ႕ ဝ ႕ ဂ ဝ ၃ ၁၈၃၃ South Eastern railway ဝ ဂ H.R. Palmer ၁၈၂၄ Palmer s ႕ ႕

၁၈၃၇ Bristol – Exeter Isambard Kingdom Brunel ႕ ဝ ႕ ၃၆ ႕ ၁၈၄၆ ႕ ႕ Bath ႕ West Show ဂ ႕

၁၈ Thomas Spedding ss n i ၃ Propeller-hull interaction ဝ (Friction) ႕ ႕ ႕ ႕


(၂)

၁၈ ၆ Brunel Great Eastern ဝ Roll Launching William Bell ဂ Vertical Center of Gravity Ship Weight ႕ ဂ Naval Architect Naval Construction ႕ Barnaby ႕ Bell ၄ ႕ Great Eastern ႕ ႕ ႕

၁၈၆၃ ၁၈၆၇ qu ႕ Chelston Cross ဝ Rolling ၁၈၆၁ INA ႕ ႕ ၄ Apparent verticle Apparent verticle Stability in

ဂ

(1) All ships with the same natural period of roll will move in the same way in an identical seaway

(2) The worst roll occurs when the natural period of the ship equals that at which the waves are encountered

(3) Ships with the longest period, that is having least stability, will roll the least

i ’s C i C ns u Sir Edward Reed Roll ႕ ႕ ႕ Empirical solutions

(၃)

၁၈၇၁ Devastation ႕ Scales Rolling Resistance Velocity Squared Angular Velocity ႕ Devastation ၄ ႕ ႕ ႕ Rolling resistance Friction ဝ ` ႕ s i i n s `

(၄)

၁၉ ႕ ႕ ႕ ၁၈၃၈ ၁၈၇ British Association (BA) ႕ `Optimum` ၊ ဂ ဝ ႕

၁၈၆ ႕ ႕ Raven ) Scott-Russell waveline theory Swan ႕ Raven Low speed Swan High speed Newton ႕ BA ႕ Full Scale Single Ideal form

Swan Raven ႕ ၃ ၁၂ ၁၈၆၃ If the speeds are in the ratio of the square root of length then resistance per ton of displacement is the same Resistance ႕ in Resistance ႕ ႕

( )

၁၈၆၉ is in n ႕ full size ships ႕

` ၊ ႕ ႕ ႕ ႕ ` ႕

၁၈၇ INA Merrifield ဝ ဝ ဂၢ ႕ ဝ Scott Russell

` ဝ ႕ ႕ ႕ ႕ ႕


႕ ႕ ႕ ဝ `

႕ Sir Edward Reed ႕ ၁၈၇၁ Torquay ႕ ႕ Cu in in ႕ Carriage Swindon Great Western Railway Calibration u s i s ႕ u ’s ႕ British Association ႕ ဝ ႕ Single trial British Association ႕ Series of Trials

(Friction) ႕ The frictional resistance of a ship was the same as that of a plank of the same length and wetted area moving at the same speed

(၆)

႕ ႕ ႕ ႕ Hydrodynamics ဝ ႕ ဝ ႕ BA ဝ ႕ ၁၈၇ INA ဝ ႕ ႕ ႕ Edmund ၄

Torquay ၁၈၈၇ Haslar Edmund Froude ၊ ႕ ဝ Spezia St Petersburg Edmund Froude ႕ ႕ ႕ ႕ David Taylor Haslar William Froude ႕ ႕ ႕ Law of Comparison based on Froude number ႕ ဝ

႕ ႕

ဝ

ဝ

Naval Architect ႕ ႕ ႕ ႕ ဂ Naval Architecture and Ocean Engineering ႕ Ocean Engineering ႕ n s ႕

(Crest) ႕ (Trough) ႕ n ၁ ႕ ႕ ႕ ႕ ႕ ႕ ႕

၊ ႕ ၊ ႕ ႕ ႕ ႕ ႕ ႕ Local wind ႕ Southern California Wave breaking ( ဂ

u s nonlinear ( Nonlinear ႕ Professor Umeda ႕ ႕ ၁ ႕ ၂ ၂ ၃ ၃ linear ၁ ႕ ႕ ၁ ႕ ၁ ၁ ၉ ႕ ၈ ၉ ၁ ႕ ႕


Price = 100 quantities * 10 kyats - (discount) Nonlinear ႕ Linear ႕ ႕ ၁ ႕ ၁ ႕ (discount) Price = 100 quantities * 10 kyats ႕ Linear Non-linear ႕ ၊ ၊ ၊ ၊ .. Sinusoidal waves ႕ ႕ ႕ N n- in in N n- in Linear

Plane Progressive Wave

Wave Constant amplitude, constant wavelength Progressive wave ႕ ႕ ႕ Wave elevation ႕ ႕ Equation (1)

) (၁)

(၂)

(၃)

Wave elevation Sine function a Wave amplitude, k Wave number, frequency in radians per second, f wave frequency in Hertz, T Wave period, lambda n coordinates Plane progressive wave i i n (z) direction 2-dimension ႕ ႕ Angular frequency ႕ Period ၊ Wave number ႕ Wavelength Equation (2) ႕ (3) Dispersion Relation

Dispersion relation wave frequency (Omega) ႕ wave number (k) Equation (4) Plane progressive wave ႕ Equation (1) Velocity potential ႕ un n i i ns Dispersion relation ႕

(၄)

Equation (4) h g i i n i n Relation Shallow water ႕ Depth water appro i i ns (၁) Deep-water ႕ h wave-length h>>lambda kh>>1 n 1 dispersion relation Equation (5) ႕ h>lambda/4 deep-water

( )

(၂) Shallow-water ႕ h wave-length h<<lambda kh<<1 tanh (kh) =kh ႕ ႕ dispersion relation Equation (6) ႕ h<lambda/11 shallow-water

(၆) Phase velocity

Phase velocity Wave Propagate ( velocity ႕ Phase velocity Equation (7) deep-water ႕ shallow-water s i Equation (8) ႕ (9)

(၇)

√

(၈)

√ (၉) Deep-water s i wave-length ႕ wave-frequen - is si ႕ shallow-water phase speed ႕ non-dispersive ႕

Group Velocity

s Propagates Equation (10) Deep-water ႕ Shallow-water Equation (11) ႕ Equation (12)

(၁ )

(၁၁)

√ (၁၂) ႕ x-direction ႕ Kelvin waves Rossby waves ႕


Significant Wave-height

႕ ႕ H(1/3) ႕ ၊ ႕ ႕ i ၁၂ ႕ ႕ ၄ ၄ averaged height ၄ /၁၂ ႕ H (1/3) ႕

႕ ဂ ဂ ၁၂ ၂၄ Period

( . ၂ knots order 2 cm (amplitude Bernoulli effect, frictional drag ႕ i n

u s s ႕ ႕ Fully developed sea state ႕ u ၊ fetch (fetch u s s ႕ )၊ modal frequency (modal frequency frequency peak

) ႕ ႕ ႕ u Wave spectrum ႕ ႕ ႕ ႕ s ၊ -u i ႕ Offshore wind turbine in ႕ ႕ M in s s ၊ i i ss ႕ ႕ ႕ ႕ ႕ s u


(၁) fetch limitations: ႕ fully develop ႕ ႕ ႕

(၂)

(၃) - s u ႕

(၄) Local currents: s u

( ) Swell - Swell ႕ swell ႕

Spectrum model ႕

(၁) Pierson-Moskowitz Spectrum

(၂) Bretschneider Spectrum

(၃) JONSWAP Spectrum

(၄) Ochi Spectrum

႕ ႕ ႕ Laws of Mechanics s C ns i n Mass conservation x1 ႕ ႕ ႕ x1 x2 ႕ Domain 1

Continuity equation

႕ (Channel) x ႕ z ႕ ႕ ႕ y ႕ x ႕ y ႕ ႕ ႕ ႕ x ႕ ႕ ႕ (z=0)

Surface wave ႕ η(x,t) ႕ ႕ 2-dimensions x ႕ z components (x,z) function ႕ ႕ ႕ Equation (13) (t) function Unsteady condition

(၁၃)

(၁၄)

fluid motions Mass conservation in ssi ui Continuity equation Equation (14) (u,v,w) (x,y,z) components i C n inui qu i n ႕ ႕ Appendix ႕ Surface wave ႕ Velocity ၊ ႕ Continuity equation y-components ႕ ႕ v ႕ ႕ (u,w) Boundary Conditions

႕ Hydrodynamics Viscous term ႕ Boundary layer is us Boundary layer ႕ ႕ s ႕ Inviscid flow Inviscid flow Viscous ၊ i i n ႕ Equation (13) Velocity qu n i i s Inviscid flow Vector terms Scalar term ႕ Equation (15) (u,v,w) Scalar quantity ∅ ႕ ∅ velocity potential ႕ n is i velocity potential ႕ Potential flow method ႕ Hydrodynamics Computation fluid dynamics ႕ CFD ႕ ဂ

∅ (or) ∅

∅

∅

(၁ )

(၁၆)

∅

∅

(၁၇)

Equation (14) 2 dimensions Equation (16) Equation (15) ႕ i i i n i qu i n Equation (17) Laplace equation MMU ႕ Laplace equation Inviscid flow Boundary condition


Laplace equation ႕

Channel ႕ ႕ ႕ - n n s w velocity Boundary condition Equation (18) ႕ Domain Channel ႕ Inlet Exit Infinity ႕ ႕ x ႕ z ႕ Channel ႕ ႕ Boundary conditions ႕ ႕ Surface boundary condition Free surface Rigid ႕ Boundary condition s condition

∅

(၁၈)

Surface boundary conditions Kinematic boundary condition ႕ dynamics boundary condition Kinematic dynamics Pressure, p atmospheric pressure ႕ Equation Equation (19) & (20)

(၁၉)

∅

=0 (၂ )

႕ un n i i ns

1 (Within fluid), Laplace's equation (Equation 17)

w = 0 (Equation 18)

3 ႕ ႕ Kinematic boundary condition in Equation (19)

Pressure Atmospheric pressure ႕ dynamics boundary condition in Equation (20)


႕ ႕ knowledge

(၁) Continuity equation

(၂) Velocity potential

(၃) Velocity potential ႕

(၄ ႕

( ) Boundary condition

(၆) Kinematic boundary condition ႕

(၇) Kinematic boundary condition

(၈) Dynamic boundary condition ႕

႕ (၃)

(၁) Continuity equation

(၂) Kinematic boundary condition

(၃) Dynamic boundary condition

ဝ


ဝ ၂

႕ ဝ ႕

(၃) Series 60 (S60)

Methodical Series Single screw marchant ships ၁၉၆၃ F.H. Todd ႕ ဝ Series 60 CB = 0.6 Series CB = 0.65, 0.7, 0.75, 0.8 Series 60 ႕ Prototype

CFD ႕ Wigley Hull ႕ ႕ S60 S60 Wigley Hull ႕ ၊ un ၊ Wake ႕

(၄) Esso Osaka

Tanker ၁၉၇၃ ၁၉၈ Esso Osaka ဝ Wigley hull ႕ 0 ႕ ႕ Esso Osaka Tank Tanker ႕ Hull form, Wake ႕ n n

( ) KCS (Korean container ship)

KCS Korea Research Institute for Ships and Ocean Engineering ( MOERI) ႕ Prototype ႕ ႕ C n in s i ႕ ဝ ႕

၊ ႕ ႕ ႕

(၆) KVLCC1, KVLCC2, KVLCC2M

Hydrodynamics Researh field Tanker ႕ MOERI KVLCC1 ဂ KVLCC2 CFD Tokyo Workshop 2005 Prof. Hino KVLCC2 ႕ KVLCC2M ႕ ns i u s NMRI (National Maritime Research Institute, Tokyo), MOERI, INSEAN, NTNU ႕ s ni si 2010 CFD Gothenburg C s ၊ Grid ၊ ႕ ႕ ႕ n ၊ ႕ Flow Solver ႕ ၊ M ၊ ႕ Experiment ns i u s ႕ CFD ႕ Seakeeping ႕ CC ႕ in ႕ ႕

(၇) DTMB 5415

၁၉၈ u n ႕ ႕ ဝ Sonar dome ႕ Transom stern Propulsion u s ႕ Shaft ႕ in n- s ႕

KCS ( ) ၊ DTMB 5415 ( ) ၊ CC )

the myanmar na vol1 no4

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