Umthwalo wamaza kunye nombane akufuneki uthathwe njengemithwalo emibini ezimeleyo ebalwa ngokwahlukeneyo ize yongezwe kunye.Kuhlalutyo lolwakhiwo lwaselwandle, indlela echanekileyo kukuqala ngokuchonga intshukumo yamanzi namasuntswana asekuhlaleni ebangelwa ngamaza kunye nemisinga kwindawo efanayo nexesha elifanayo, ukudibanisa iinxalenye zesantya sazo kwinkqubo ehambelanayo yokulungelelanisa, uze ubale amandla e-hydrodynamic aphumayo.

Olu mahluko lubaluleke kakhulu kwizakhiwo ezikude nolwandle ezivezwe kumaza amakhulu, imisinga enamandla, kunye neeprofayili zamandla ezintsonkothileyo. Oku kunokuchaphazela kakhulu amandla okutsala abaliweyo, ingakumbi xa i-Morison equation isetyenziselwa amalungu etyhubhu amancinci.

Eli nqaku lichaza imigaqo yobunjineli esemvaukusebenzisana kwamaza-umbane, ukolula iprofayili yangoku, indibaniselwano yevektha yesantya, amandla okutsala eMorison, kunye nomzekelo womthwalo wamaza-umbane kwi-SACS.

1. Kutheni Amaza kunye neMithwalo yangoku ingenakongezwa ngokuthe ngqo rhoqo

Indlela eqhelekileyo kuhlalutyo lwesakhiwo olukude nolwandle kukubala imithwalo yamaza kunye nemithwalo yamandla ngokuzimeleyo uze wongeze amandla avelayo kunye.

Nangona kunjalo, oku akuthethi ukuba kufuneka kubonakaliswe umthwalo we-hydrodynamic kwisakhiwo.

Umbuzo osisiseko ngulo:

Ingakanani isantya samanzi esijikeleze ilungu lesakhiwo kwindawo enye nangexesha elifanayo?

Isantya esibangelwa ngamaza kunye nesantya sangoku zikhona ngaxeshanye emanzini. Ke ngoko, isantya samanzi sendawo kufuneka siqale simiselwe ngokudibanisa iivektha zesantya sazo. Isantya esiphumayo emva koko sisetyenziselwa ukubala amandla e-hydrodynamic.

Oku kubaluleke kakhulu kwiicandelo lokutsala le-equation kaMorison, kuba amandla okutsala ahambelana nesikwere sesantya esihambelanayo.

Ke ngoko:

Ukudibanisa isantya sokusingqongileyo kuqala uze emva koko ubale amandla e-hydrodynamic ngokubanzi akufani nokubala amandla amaza kunye namandla angoku ngokuzimeleyo uze wongeze iziphumo emva koko.

2. Uvela phi uMsinga Ngaphezulu Komda Wamanzi Angashukumiyo?

Cinga ngesakhiwo esiselunxwemeni esikwimeko yesiphepho apho:

• Inqanaba lamanzi angashukumiyo lichazwa ngolu hlobou-z = 0
• Ubunzulu bamanzi80 m
• Iprofayili yangoku yokufaka ichazwa kuphela ukuya kwinqanaba lamanzi angashukumiyo
• Incopho yamaza ifikelelaη = +8 m

Xa i-wave crest idlula isakhiwo, umphezulu okhululekileyo okhawulezileyo unyuka uye kwi-+8 m.

Ilungu lesakhiwo elise-z = +4 mngoko ke intywiliselwa emanzini okwethutyana.

Kodwa iprofayili yamandla okuqala ayiboneleli ngokuthe ngqo ngesantya samandla kwi +4 m kuba iprofayili yamandla yokuqala yayichazwe kuphela ukuya kwinqanaba lamanzi angashukumiyo.

Ingxaki yobunjineli ke ngoko asikokufumanisa okwangokungaphezulu kwe-wave crestEndaweni yoko, kukufumanisa isantya sangoku kummandla esithi:

ngaphezulu komgangatho wamanzi angashukumiyo kodwa ngaphantsi komphezulu wamaza akhawulezileyo.

Enye indlela yobunjineli kukuguqula iprofayili yangoku ngokwendlela ephuma ngayo ngokukhawuleza. Iprofayili yangoku yoluliwe okanye icinezelwe ngempumelelo ukuze:

• Intsalela esecaleni kolwandle enxulunyaniswa nesiseko solwandle
• Umphezulu wamaza okhawulezileyo uhambelana nomda ongaphezulu weprofayili yangoku yokuqala

Oku kubonelela ngokusasazwa kwesantya samandla ombane rhoqo kulo lonke ummandla omanzi ngokukhawuleza.

3. Ukwelula iProfayili yangoku: Ukumapha iMephu yokuphakama kwendawo

Ukolula iprofayili yangoku akufuneki kuthathwe njengokuphindaphinda nje isantya ngasinye sangoku nge-scaling factor.

Umsebenzi ophambili kukwenzaimaphu yokuphakama kwesakhiwo sangoku ukuya kwindawo ehambelanayo yokuphakama kwiprofayili yangoku yokuqala, uze ufumane isantya sangoku kuloo ndawo ikwimephu.

Kwindlela elula yokwelula umgca, ubudlelwane bungabonakaliswa ngolu hlobo:

z' = -d + (z + d) × d / (d + η)

apho:

• d= ubunzulu bamanzi esiphepho
• η= ukuphakama kwamaza ngoko nangoko
• z= ukuphakama kwangoku kwindawo yolwakhiwo
• z'= ukuphakama okumephiweyo kwiprofayili yangoku yokuqala

Inkqubo efanayo yokubhekisa ethe nkqo kufuneka isetyenziswez, z' kunye no-η, kunye namaxabiso amahle anyukayo.

Umzekelo, cinga:

• Ubunzulu bamanzi:d = 80 m
• Ukuphakama kwamaza:η = +8 m

Imephu ingaboniswa ngolu hlobo lulandelayo:

Oku kuthetha ukuba isantya sangoku kwiz = +4 mifunyanwa ngokuvavanya iprofayili yangoku yokuqala malungaz' = −3.64 m.

Umzekelo woNxibelelwano lweVelocity yangoku

Masithi iprofayili yangoku yokuqala inayo:

• Isantya sangoku ku-z = 0 m:1.5 m/s
• Isantya sangoku ku-z = −20 m:1.2 m/s

Ukuba kusetyenziswa i-linear interpolation, isantya esimaphu esimalunga ne-−3.64 m sinokufunyanwa kwezi xabiso zimbini.

Ingongoma ebalulekileyo yile:

Ukusolula kutshintsha indawo apho isantya sangoku sifunyenwe khona. Akuphindaphindi nje zonke iisantya zangoku nge-88/80.

Olu mahluko lubalulekile xa kutolikwa utshintsho lweprofayili yangoku kuhlalutyo lwe-hydrodynamic lwaselwandle.

4. Ukolula iProfayili yangoku ethe tye vs. engeyiyo ethe tye

Ukusolula iprofayili okwangoku akunyanzelekanga ukuba kusetyenziswe indlela enye yezibalo.

I-API RP 2A-WSD, Uhlelo lwama-22, Icandelo 5.3.1.2.6ichonga ukolula okungengomgca njengendlela ekhethwayo phantsi kweemeko ezichazwe ngumgangatho, ngelixa ikwaxoxa ngeendlela eziqikelelweyo zeempawu ezithile zeprofayili yangoku.

Kwislabhu ebanzi enomlinganiselo ofanayo wokusasazwa kwesantya, ulwandiso olulula oluthe nkqo lunokubonelela ngomlinganiselo ofanelekileyo wolwandiso olungelulo olungqameneyo.

Kwezinye iintlobo zeeprofayili zangoku,ukolula okuthe tye kunokusetyenziswa njengoqikelelo lobunjineli, kuxhomekeke kwiimeko ezifanelekileyo kunye nendlela yokuhlalutya.

Ke ngoko, izigqibo ezibini kufuneka ziphetshwe:

• Akulunganga ukucinga ukuba yonke iprofayili yangoku inokwandiswa nje phezulu ngaphandle kokuqwalaselwa.
• Akulunganga kananjalo ukucinga ukuba ukolula okuthe tye akuvumelekanga ngokubanzi.

Ukhetho kufuneka lusekelwe kwiimpawu zeprofayili yangoku, umgangatho woyilo ofanelekileyo, kunye neemfuno zohlalutyo.

Iprofayili yangoku xa ithelekiswa neWave Kinematics

Omnye umahluko obalulekileyo kukubaukolula iprofayili yangoku kunye ne-wave kinematics aziyonkqubo efanayo yomzimba.

Ukolula kwamandla ombane kumisela indlela iprofayili yesantya samandla ombane echazwe ngayo kwindawo emanzi ngokukhawuleza.

Iindlela ezinjeUkolula ivilizinxulunyaniswa nonyango lwe-wave kinematics.

Nangona iingcamango ezifanayo zokubonisa ukuphakama zinokuvela kwiifomyula ezahlukeneyo, akufuneki zitolikwe ngokuzenzekelayo njengesetingi yesoftware efanayo okanye ukulungiswa okufanayo komzimba.

5. Amaza kunye nesantya samandla kufuneka zidityaniswe njengeeVektha

Xa isantya sangoku sendawo sifunyenwe, sinokudityaniswa nesantya esibangelwa yiza.

Nangona kunjalo, isantya kufuneka zidityaniswe njengeiivektha, endaweni yokongeza nje ubukhulu bazo.

Umzekelo, ngexesha elithile:

• Isantya samaza =3 m/s ukuya empuma
• Isantya sangoku =1 m/s ukuya emantla

Isantya esithe tye esiphumelayo sisi:

U = √(3² + 1²) ≈ 3.16 m/s

Ngoko ke ayisiyo-4 m/s.

Ukuba isantya segagasi kunye nesangoku sihamba nge-collinear kwaye sikwicala elinye, isantya sazo esisayiniweyo singongezwa ngokuthe ngqo.

Umzekelo:

3 m/s + 1 m/s = 4 m/s

Kodwa xa imiyalelo yahlukile, kufuneka kongezwe i-vector.

6. Isantya Esifanelekileyo kwiLungu leSakhiwo yiCandelo eliqhelekileyo

Kwizakhiwo zeetyhubhu zaselwandle, enye into ebalulekileyo ekufuneka iqwalaselwe yindlela amandla e-hydrodynamic asebenza ngayo xa ethelekiswa nelungu.

Isantya esisetyenziswa kwicandelo lokutsala kufuneka siqwalaselwe ngokubanzi ngokunxulumeneinxalenye yokuhamba okuqhelekileyo kwilungu lesakhiwo.

Oku kuthetha ukuba ubukhulu besantya sokusingqongileyo ngokubanzi akufuneki busetyenziswe ngokuzenzekelayo kuwo onke amalungu etyhubhu athambekileyo okanye ajonge ngokwahlukileyo.

Kwilungu elinendlela engaqhelekanga:

1. Misela isantya segagasi lendawo.
2. Misela isantya sangoku sendawo.
3. Zidibanise kwinkqubo ehambelanayo yokulungelelanisa.
4. Misela isantya sokuhamba kwamanzi esihambelanayo.
5. Sombulula isantya sibe yinto eqhelekileyo kwilungu.
6. Sebenzisa ifomula efanelekileyo ye-hydrodynamic.

Ukuba ilungu lesakhiwo ngokwalo liyashukuma, ubungakanani obufanelekileyo bukwafanele buqwalaseleisantya esiphakathi kwamanzi kunye nelungu.

7. Kutheni umahluko uba yinto ebalulekileyo kwiMorison Drag Term

Ukubaluleka kokudibanisa ngokuchanekileyo isantya samaza kunye nomsinga kuyacaca xa kujongwa i-Morison equation.

Kwisilinda esijikelezileyo esizinzileyo esiphantsi kokuhamba okunqamlezileyo okunemilinganiselo enye, amandla okutsala ngobude beyunithi nganye angabonakaliswa ngendlela elula ngolu hlobo:

Fᴅ = ½ ρ Cᴅ DU |U|

apho:

• Fᴅ= amandla okurhuqa ngobude beyunithi nganye
• ρ= ubuninzi bamanzi
• Cᴅ= i-coefficient yokutsala
• D= ububanzi belungu
• U= isantya sokuhamba esihambelanayo esiqhelekileyo kwilungu

Uphawu olubalulekileyo leli gama:

U |U|

Ngoko ke, amandla okutsala awangqamani ngokubhekiselele kwisantya.

8. Umzekelo: Amaza ahlukeneyo kunye nemithwalo yangoku xa kuthelekiswa nesantya esidibeneyo

Cinga ngemeko elula apho:

• Isantya samaza =3 m/s
• Isantya sangoku =1 m/s
• Zombini zisebenza kwicala elinye

Ukuba amandla okutsala amaza kunye namandla okutsala angoku abalwa ngokwahlukeneyo aze ongezwe, amagama esantya-isikwere ngala:

3² + 1² = 10

Ukuba isantya siqala ngokudityaniswa kwaye amandla okutsala abalwa:

(3 + 1)² = 16

Umahluko uvela kwigama elithi cross:

2 × 3 × 1 = 6

AmaxabisoI-10 kunye ne-16 ziimigama eziphindwe kabini zesantya, ngeeyunithi ze-m²/s². Azizo amandla kwi-kN kwaye azimeli umthwalo we-hydrodynamic iyonke ngokwazo.

Lo mzekelo ulula ubonisa isizathu:

Ukubala i-wave kunye ne-current drag ngokuzimeleyo uze wongeze iziphumo ngokubanzi akufani nokubala i-drag ukusuka kwi-condensed local velocity.

Umahluko ubaluleke kakhulu xa isantya samaza kunye nombane sikhulu kwaye sisebenza kwicala elinye.

9. Kwenzeka ntoni xa iWave kunye neCurrent zisebenza ngendlela eyahlukileyo?

Umgaqo ofanayo uyasebenza xa isantya samaza kunye nesamandla ombane zisebenza kwicala elahlukileyo, kodwa isantya esisayiniweyo kufuneka sigcinwe.

Umzekelo:

• Isantya samaza = +3 m/s
• Isantya sangoku = −1 m/s

Isantya esidibeneyo yile:

U = +3 − 1 = +2 m/s

Ixesha lokurhuqa elihambelanayo lesantya-esikwere lisekelwe ku:

U |U| = 2 × 2 = 4

Oku kubonisa isizathu sokuba kungachanekanga ukugqiba kwelokuba ukubala ngokwahlukileyo kuya kuhlala kuvelisa umthwalo omncinci.

Ngokuxhomekeke kwicala elihambelanayo kunye nesigaba segagasi kunye nesantya sangoku, umahluko ungatshintsha ngobukhulu kunye necala.

10. I-Morison Equation ikwaquka ne-Inertia Term

Umzekelo olula ongentla ugxile kuphela kwinxalenye yokutsala.

Ifomyula epheleleyo yeMorison ikwaqulatheigama elithi inertia elinxulunyaniswa nokukhawuleziswa kwamanzi kunye namasuntswana.

Ngoko ke, umthwalo we-hydrodynamic opheleleyo we-wave-current awunakubonakaliswa nje ngokuthi umthwalo wonke ulingana nesantya esiphindwe kabini.

Icandelo lokutsala libonisa ngokucacileyo isiphumo esingelulo ulayini, ngelixa icandelo le-inertia kufuneka liphathwe ngokwendlela efanelekileyo yokwenziwa kwe-hydrodynamic kunye ne-wave kinematics.

Olu mahluko lubalulekile xa kutolikwa iziphumo zohlalutyo lwesakhiwo oluselunxwemeni.

11. Ukusebenzisana phakathi kwamaza namaxesha kwi-SACS: Yintoni ekufuneka iinjineli ziyijonge?

Xa kuqhutywa imodeli yamaza kunye neziphumo zangoku kwiI-SACS, injineli kufuneka ijonge ngaphaya kwegama lebhokisi yomthwalo.

Ibhokisi yomthwalo ebizwa ngokuba“Igagasi + Umsinga”ayibonisi ukuba inkqubo yomzimba esisiseko yenziwe ngendlela eyiyo.

Iinkalo ezininzi kufuneka zihlolwe:

1. Isalathiso seNqanaba laManzi

Qinisekisa ukuba oku kulandelayo kuchazwa ngendlela efanayo:

• Inqanaba lamanzi angashukumiyo
• Inqanaba lamanzi esiphepho
• Ukuphakama kwamaza
• Ukuphakama kwesakhiwo
• Ukuphakama kwesalathiso seprofayili yangoku

Isalathiso esingaguqukiyo esithe nkqo sinokubangela ukuba imephu yangoku ingachanekanga.

2. Ukolula iProfayili yangoku

Jonga ukuba iprofayili yangoku yile:

• Yoluliwe
• Yandisiwe
• I-Interpolated
• Iguqulwe ngolunye utshintsho

Indlela ekhethiweyo kufuneka ihambelane nendlela yoyilo efanelekileyo.

3. I-Wave Kinematics

Jonga indlela isoftware evelisa ngayo isantya kunye nokukhawulezisa amaza kunye neenxalenye.

Ukuguqulwa kweprofayili yangoku kunye nokolulwa kwe-wave-kinematic akufanele kuthathwe ngokuzenzekelayo njengenkqubo efanayo.

4. Isikhokelo seWave-Current

Jonga i-engile ehambelanayo phakathi kokusasazwa kwamaza kunye necala langoku.

Kwiimeko zamaza angengo-collinear kunye nangoku, zombini izinto ezibhekiselele kwicala zinokuchaphazela uhlalutyo.

5. Isantya Esiqhelekileyo Selungu

Kwilungu ngalinye lesakhiwo, qinisekisa ukuba kusetyenziswa icandelo elifanelekileyo lokuhamba kwamanzi ngokumalunga nokujongwa kwelungu.

6. Isantya esilinganiselweyo

Ukuba intshukumo yesakhiwo ibalulekile, qinisekisa ukuba i-hydrodynamic formulation isebenzisa isantya esifanelekileyo samanzi ukuya kwilungu.

7. Iinxalenye zokutsalwa kunye ne-Inertia

Hlaziya igalelo elahlukileyo le:

• Tsala amandla
• Amandla okuxinezeleka
• Amandla e-hydrodynamic iyonke

Musa ukutolika umzekelo wokutsalwa kuphela njengomele umthwalo opheleleyo weMorison.

12. Ixesha Elibonakalayo Legagasi kunye Nesantya Sangoku Akufanele Kudideke

Enye ingxaki ebalulekileyo kuhlalutyo lwaselwandle yisantya sangoku esisetyenziselwa ukuqikelelaixesha elibonakalayo lamaza.

I-current esetyenziselwa le njongo ayifani ngokuyimfuneko nexabiso langoku esele litshintshiwe ngenxa yokuvaleka kwesakhiwo okanye iziphumo zasekuhlaleni.

Phantsi kwendlela ye-API exoxwe ngayo apha ngasentla, ixesha elibonakalayo lamaza kufuneka livavanywe kusetyenziswaumsinga wasimahla ongaphazanyiswayo, endaweni yomsinga osele uncitshisiwe kukuxinana kwesakhiwo.

Kwiimeko zamaza angengo-collinear kunye nangoku, icandelo langoku kwicala lamaza libalulekile kuqikelelo olubonakalayo lwexesha lamaza.

Kwangaxeshanye, iprofayili yangoku esetyenziswa ekubalweni komthwalo we-hydrodynamic ingafuna imephu yeprofayili efanelekileyo kunye nonyango oluya kwicala.

Ke ngoko:

Ixabiso langoku eliguqulwe ngenjongo enye yokuhlalutya akufuneki lisetyenziswe ngokuzenzekelayo kuyo yonke inyathelo lokubala.

13. Ukubekwa koMthwalo weSakhiwo akufani nokuVeliswa koMthwalo weNdalo

Ingcamango ebalulekileyo kuhlalutyo lwesakhiwo olukude nolwandle ngumahluko phakathiukuvelisa umthwalokwayeindawo engaphezulu kwempendulo yolwakhiwo.

Phantsi kweemeko ezifanelekileyo zesakhiwo esithe ngqo, iimpendulo zesakhiwo zinokufakwa endaweni yazo.

Nangona kunjalo, oku akuthethi ukuba amandla e-hydrodynamic okusingqongileyo avelise ezo mpendulo anokusoloko ebalwa ngokuzimeleyo aze ongezwe ngokulandelelana.

Umzekelo:

Isantya samaza + isantya sangoku → isantya esidibeneyo sendawo → amandla e-hydrodynamic → impendulo yesakhiwo

yahlukile ngokupheleleyo ku:

Amandla amaza + amandla angoku → impendulo yolwakhiwo

xa amandla e-hydrodynamic ngokwawo engangqalanga ngokubhekiselele kwisantya.

Olu mahluko lubaluleke kakhulu ekutsaleni kweMorison.

14. Indlela Esebenzayo Yokuhlalutya Umthwalo Wamaza-Wangoku

Ngoko ke, indlela yokusebenza yobunjineli esebenzayo ingashwankathelwa ngolu hlobo lulandelayo:

Inyathelo 1 — Misela iNqanaba laManzi

Chaza inqanaba elifanelekileyo lereferensi yamanzi angashukumiyo okanye amanzi emvula kwaye uqinisekise ukuba zonke iindawo eziphakamileyo zisebenzisa idatha efanayo.

Inyathelo lesi-2 — Chaza umphezulu wamaza

Misela ukuphakama kwamaza ngoko nangoko kwindawo kunye nesigaba esivavanywayo.

Inyathelo lesi-3 — Imaphu yeProfayili yangoku

Misela isantya sangoku esihambelana nokuphakama okumanzi ngokukhawuleza usebenzisa utshintsho olusebenzayo lweprofayili yangoku.

Inyathelo lesi-4 — Chonga i-Wave Kinematics

Bala isantya kunye nokukhawulezisa okubangelwa liza lendawo kwindawo efanayo nakwisigaba esifanayo.

Inyathelo lesi-5 — Hlanganisa i-Wave kunye ne-Current Velocities

Yenza ukongezwa kwevektha kwinkqubo ehambelanayo yokulungelelanisa.

Inyathelo 6 — Chonga ukuhamba kobudlelwane

Xela ulwalathiso lwamalungu, kwaye apho kufanelekileyo, intshukumo yolwakhiwo.

Inyathelo lesi-7 — Bala Amandla eHydrodynamic

Faka iMorison efanelekileyo okanye enye indlela yokwenza i-hydrodynamic.

Inyathelo 8 — Jonga iinxalenye zemiyalelo

Qinisekisa ukuba iinxalenye zesantya esiqhelekileyo nesithe nkqo zisetyenzisiwe kwilungu ngalinye lesakhiwo.

Inyathelo 9 — Hlaziya isiphumo seSACS

Jonga izinto ezisisiseko kunye nobungakanani bemveliso endaweni yokuxhomekeka kuphela kumagama ee-load-case.

Inyathelo le-10 — Qinisekisa ngokuchasene neMigangatho eSebenzayo

Hlaziya iimfuno ze-API ezifanelekileyo, iinkcukacha zeprojekthi, uxwebhu lwesoftware, kunye neengcamango zohlalutyo.

15. Izinto ezibalulekileyo ekufuneka ziqwalaselwe

Unyango oluchanekileyo lomthwalo wamaza kunye nombane ngokusisisekoingxaki ye-water-kinematics ngaphambi kokuba ibe yingxaki yomthwalo wesakhiwo.

Imigaqo ephambili yile:

• Isantya samaza kunye nesantya sangoku kufuneka sivavanywe kwindawo efanayo nangexesha elifanayo.
• Iiprofayili zangoku zisenokufuna ukuguqulwa xa umphezulu okhululekileyo ngoko nangoko wahlukile kwinqanaba lamanzi asetyenzisiweyo.
• Ukolulwa kweprofayili yangoku kutshintsha indawo yokuthathwa kwesampulu yesantya; akusiyo nje into yokuphindaphinda isantya esifanayo.
• Isantya samaza kunye nombane kufuneka zidityaniswe njengeevektha.
• Inxalenye yesantya eqhelekileyo kwilungu lesakhiwo ibalulekile kwi-Morison drag.
• Isantya esihambelanayo phakathi kwamanzi nelungu kufuneka siqwalaselwe xa intshukumo yesakhiwo ibalulekile.
• Ukutsalwa kweMorison akuhambelani nomgca kuba kuxhomekeke kwi-U|U|.
• Ukubala i-wave kunye ne-current drag ngokwahlukeneyo kunye nokongeza iziphumo ngokubanzi akufani nokubala i-drag ukusuka kwi-contense velocity.
• Igama elithi Morison inertia lifuna ukuqwalaselwa ngokwahlukileyo kwaye alimelwanga ngumzekelo olula we-velocity-squared.
• Amaxabiso angoku asetyenziselwa uqikelelo lwexesha elibonakalayo akufuneki adideke ngokuzenzekelayo namaxabiso angoku avaliweyo okanye aguqulweyo asetyenziswa kwenye indawo.
• Ukubekwa kwempendulo yolwakhiwo akuthethi ukuba imithwalo ye-hydrodynamic yokusingqongileyo inokuhlala iveliswa ngokuzimeleyo kwaye yongezwe ngokuthe ngqo.
• Amagama ee-load-case ze-SACS zodwa awanele ukuqinisekisa ukuchaneka ngokwasemzimbeni kohlalutyo lwe-wave-current.

Isiphelo

Ingxaki ephambili ekudibaneni komthwalo wamaza-amandla angoku ayikokuba nje kunokongezwa amandla amabini.

Umbuzo obaluleke ngakumbi ngulo:

Amanzi ahamba njani ngokwenene ejikeleze ilungu lesakhiwo kwindawo enye nangexesha elifanayo?

Ukolula kweprofayili yangoku kumiselaapho isantya sangoku kufuneka sifumaneke khona.

Indibaniselwano yevektha imiselaindlela amaza kunye nesantya sangoku ezisebenzisana ngayo.

I-equation kaMorison imiselaindlela intshukumo yamanzi ephumayo eguqulwa ngayo ibe ngamandla e-hydrodynamic.

La manyathelo adibene ngokwasemzimbeni kwaye, ngokubanzi, awanakuthathelwa indawo ngokongeza nje iziphumo ezimbini zomthwalo wendalo ezibalwe ngokuzimeleyo.

Ukuze kuhlalutywe ulwakhiwo oluthembekileyo lwaselwandle, iinjineli kufuneka zihlolisise uthotho olupheleleyo:

Inqanaba lamanzi → Iprofayili yangoku → I-kinematics yamaza → Indibaniselwano yesantya samaza-sangoku → Isantya selungu elihambelanayo → Amandla e-hydrodynamic → Impendulo yolwakhiwo

Le ndlela ibonelela ngesiseko esihambelanayo ngokwasemzimbeni sokuhlalutya izakhiwo zeetyhubhu zaselunxwemeni eziphantsi komthwalo odibeneyo wamaza kunye nomsinga.

Imibuzo ebuzwa qho

Ngaba imithwalo yamaza kunye neyamandla ombane inokongezwa kunye?

Akunjalo kuzo zonke iimeko. Kwi-Morison drag loading, isantya samaza kunye nesamandla kufuneka zidityaniswe ngaphambi kokubala i-hydrodynamic drag kuba amandla okutsala axhomekeke kwisantya esingangqalanga.

Yintoni ukolula iprofayili yangoku?

Ukolula iprofayili yangoku yindlela yokubonisa iprofayili yesantya sangoku sokuqala kwikholamu yamanzi emanzi ngokukhawuleza xa ukuphakama komphezulu okhululekileyo kutshintsha ngenxa yamaza.

Ngaba ukolula kwangoku kuthetha ukuphindaphinda isantya nge-scale factor?

Hayi. Ngokubanzi, ukolula kutshintsha ukuphakama apho isantya sangoku sifunyanwa khona kwiprofayili yokuqala. Akufanele kuthathwe njengokuphindaphinda isantya ngasinye ngento efanayo.

Yintoni umahluko phakathi kwe-wave kinematics kunye ne-current-profile stretching?

Ii-kinematics zamaza zichaza isantya kunye nokukhawulezisa okunxulunyaniswa nokuhamba kwamaza. Ukolula i-current-profile kuguqula indlela i-current profile ethile emelwe ngayo ngaphakathi kwikholamu yamanzi ekhawulezileyo. Zinxulumene neenkqubo ezahlukeneyo zomzimba.

Kutheni amandla okutsala eMorison etshintsha kakhulu xa amaza kunye nomsinga zidityanisiwe?

Kuba ixesha lokutsala lixhomekeke kwisantya esihambelanayo esisayiniweyo nge-U|U|. Ke ngoko, isantya esidibeneyo sinokuvelisa amagama anqamlezileyo angekhoyo xa amandla okutsala amaza kunye namandla okutsala abalwa ngokuzimeleyo.

Ngaba indlela eya kumaza kunye nomsinga ibalulekile?

Ewe. Isantya samaza kunye nombane kufuneka ziphathwe njengeevektha. Icala lazo elihambelanayo lichaphazela isantya esiphumayo kwaye ke ngoko amandla e-hydrodynamic.

Ngaba isantya samanzi sisonke sifanele sisetyenziswe kwilungu ngalinye lesakhiwo?

Akunjalo ngokuyimfuneko. Kumalungu abhityileyo aneetyhubhu, i-velocity component eqhelekileyo kwilungu ibaluleke kakhulu ekutsaleni okunqamlezileyo. Ulwalathiso lwelungu kufuneka luqwalaselwe.

Ngaba i-SACS ingaphatha ngokuzenzekelayo ukusebenzisana kwamaza kunye namanje?

Unyango oluchanekileyo luxhomekeke kwinguqulelo ye-SACS, useto lohlalutyo, iinkcazo zokufaka, kunye nendlela ekhethiweyo. Iinjineli kufuneka ziqinisekise amaxwebhu esoftware afanelekileyo kunye nemveliso endaweni yokuxhomekeka kuphela kwigama letyala lomthwalo.

Ngaba indibaniselwano yomthwalo we-wave-current iyafana ne-structural load superposition?

Hayi. Impendulo yolwakhiwo isenokufakwa endaweni yayo phantsi kweengcamango ezifanelekileyo ezithe ngqo, kodwa ukuveliswa kwamandla e-hydrodynamic kunokuba yinto engeyoyomgca. Ke ngoko, ukuveliswa komthwalo wokusingqongileyo kunye nokubekwa kwempendulo yolwakhiwo kufuneka kuthathwe njengeengcamango ezahlukeneyo.