Energetska efikasnost rečnih samohodnih teretnih brodova
Energy efficiency of inland waterway self-propelled cargo vessels
Abstract
Disertacija je proistekla iz višegodišnjeg istraživanja problema pogona rečnih samohodnih teretnih brodova. Hidrodinamičke pojave koje su posledica složenih uslova u kojima plove rečni samohodni teretni brodovi čine izbor adekvatnog propulzivnog kompleksa pri projektovanju veoma složenim, ali i izazovnim zadatkom. Poseban problem predstavlja nedostatak metoda za određivanje uticaja ograničenja plovnog puta na hidrodinamičku efikasnost. Odatle proističu i poteškoće pri određivanju ukupne energetske efikasnosti brodova ovog tipa. Na osnovu svih podataka prikupljenih iz literature do kojih je bilo moguće doći, ali i dostupnih izveštaja, oformljena je baza sa osnovnim dimenzijama i rezultatima merenja apsorpcije snage velikog broja različitih tipova rečnih samohotki. Formirana baza je poslužila kao osnova za istraživanja hidrodinamičkih pojava do kojih dolazi pri plovidbi. U okviru istraživanja je sproveden niz neposrednih merenja apsorpcije snage na brodovima u realnim uslovima. Ovo je om...ogućilo proširenje formirane baze, ali i ukazalo na kompleksnost postupka merenja iz čega proističu nekada i velike razlike između raspoloživih rezultata merenja apsorpcije snage na istom brodu, ali i između modelskih ispitivanja i ispitivanja brodova u prirodnoj veličini. Na osnovu rezultata modelskih ispitivanja razvijen je matematički model pomoću koga se za poznate dimenzije i nosivost broda, kao i ograničenja plovnog iv puta može proceniti snaga koju je neophodno angažovati u cilju postizanja željene brzine...
This dissertation has originated from many years of research on the issue of propulsion of inland-waterway self-propelled cargo vessels (IWV). Hydrodynamic effects stemming from complex conditions related to IWV navigation make selecting the appropriate propulsion system during the project phase a very complex and challenging task. A particularly important issue is the scarcity of methods for determining the influence of waterway restrictions on hydrodynamic efficiency. This produces difficulties when determining the overall energy efficiency of these ship types. Based on all the data collected from the available references and reports, a database was created containing basic dimensions and results of power absorption measurements of many different types of IWV. The data served as a basis for research devoted to navigation-related hydrodynamic effects. During the course of the research, numerous direct measurements of ship power absorption in realistic conditions were performed. This e...nabled the expansion of the aforementioned base, but also indicated the complexity of measurement methods, which occasionally produce considerable differences between the available results of power absorption measurements of the same ship, but also between examinations of models and corresponding full-scale IWV. Based on the available results of model-scale examinations, a mathematical model was developed that can determine the power required for achieving the desired speed, on the basis of the known ship dimensions and displacement, as well as waterway restrictions. The analysis of full-scale ships examinations and comparisons of model and full-scale measurements, along with the application of existing methods of determining the effects of external influences, led to the formulation of recommendations for estimating power vi power margin. A method was indicated, based on the examination of full-scale ships, whereby the propulsion coefficients depending on waterway restrictions can be determined...
Keywords:
veštačke neuronske mreže / spoljašnji uticaji / otpor samohotki / ograničenja plovnog puta / merenje momenta na propelerskom vratilu / matematički model / koeficijenti propulzije / indeks energetske efikasnosti / dodatak za službu / apsorpcija snage / waterway restrictions / ship resistance / propulsion coefficients / propeller-shaft torque measurements / power margine / power absorption / mathematical model / external influences / energy efficiency design index / artificial neural networkSource:
2012Publisher:
- Univerzitet u Beogradu, Mašinski fakultet
URI
http://eteze.bg.ac.rs/application/showtheses?thesesId=614https://nardus.mpn.gov.rs/handle/123456789/2309
https://fedorabg.bg.ac.rs/fedora/get/o:6783/bdef:Content/download
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https://machinery.mas.bg.ac.rs/handle/123456789/11
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Mašinski fakultetTY - THES AU - Simić, Aleksandar PY - 2012 UR - http://eteze.bg.ac.rs/application/showtheses?thesesId=614 UR - https://nardus.mpn.gov.rs/handle/123456789/2309 UR - https://fedorabg.bg.ac.rs/fedora/get/o:6783/bdef:Content/download UR - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=514016163 UR - https://machinery.mas.bg.ac.rs/handle/123456789/11 AB - Disertacija je proistekla iz višegodišnjeg istraživanja problema pogona rečnih samohodnih teretnih brodova. Hidrodinamičke pojave koje su posledica složenih uslova u kojima plove rečni samohodni teretni brodovi čine izbor adekvatnog propulzivnog kompleksa pri projektovanju veoma složenim, ali i izazovnim zadatkom. Poseban problem predstavlja nedostatak metoda za određivanje uticaja ograničenja plovnog puta na hidrodinamičku efikasnost. Odatle proističu i poteškoće pri određivanju ukupne energetske efikasnosti brodova ovog tipa. Na osnovu svih podataka prikupljenih iz literature do kojih je bilo moguće doći, ali i dostupnih izveštaja, oformljena je baza sa osnovnim dimenzijama i rezultatima merenja apsorpcije snage velikog broja različitih tipova rečnih samohotki. Formirana baza je poslužila kao osnova za istraživanja hidrodinamičkih pojava do kojih dolazi pri plovidbi. U okviru istraživanja je sproveden niz neposrednih merenja apsorpcije snage na brodovima u realnim uslovima. Ovo je omogućilo proširenje formirane baze, ali i ukazalo na kompleksnost postupka merenja iz čega proističu nekada i velike razlike između raspoloživih rezultata merenja apsorpcije snage na istom brodu, ali i između modelskih ispitivanja i ispitivanja brodova u prirodnoj veličini. Na osnovu rezultata modelskih ispitivanja razvijen je matematički model pomoću koga se za poznate dimenzije i nosivost broda, kao i ograničenja plovnog iv puta može proceniti snaga koju je neophodno angažovati u cilju postizanja željene brzine... AB - This dissertation has originated from many years of research on the issue of propulsion of inland-waterway self-propelled cargo vessels (IWV). Hydrodynamic effects stemming from complex conditions related to IWV navigation make selecting the appropriate propulsion system during the project phase a very complex and challenging task. A particularly important issue is the scarcity of methods for determining the influence of waterway restrictions on hydrodynamic efficiency. This produces difficulties when determining the overall energy efficiency of these ship types. Based on all the data collected from the available references and reports, a database was created containing basic dimensions and results of power absorption measurements of many different types of IWV. The data served as a basis for research devoted to navigation-related hydrodynamic effects. During the course of the research, numerous direct measurements of ship power absorption in realistic conditions were performed. This enabled the expansion of the aforementioned base, but also indicated the complexity of measurement methods, which occasionally produce considerable differences between the available results of power absorption measurements of the same ship, but also between examinations of models and corresponding full-scale IWV. Based on the available results of model-scale examinations, a mathematical model was developed that can determine the power required for achieving the desired speed, on the basis of the known ship dimensions and displacement, as well as waterway restrictions. The analysis of full-scale ships examinations and comparisons of model and full-scale measurements, along with the application of existing methods of determining the effects of external influences, led to the formulation of recommendations for estimating power vi power margin. A method was indicated, based on the examination of full-scale ships, whereby the propulsion coefficients depending on waterway restrictions can be determined... PB - Univerzitet u Beogradu, Mašinski fakultet T1 - Energetska efikasnost rečnih samohodnih teretnih brodova T1 - Energy efficiency of inland waterway self-propelled cargo vessels UR - https://hdl.handle.net/21.15107/rcub_nardus_2309 ER -
@phdthesis{ author = "Simić, Aleksandar", year = "2012", abstract = "Disertacija je proistekla iz višegodišnjeg istraživanja problema pogona rečnih samohodnih teretnih brodova. Hidrodinamičke pojave koje su posledica složenih uslova u kojima plove rečni samohodni teretni brodovi čine izbor adekvatnog propulzivnog kompleksa pri projektovanju veoma složenim, ali i izazovnim zadatkom. Poseban problem predstavlja nedostatak metoda za određivanje uticaja ograničenja plovnog puta na hidrodinamičku efikasnost. Odatle proističu i poteškoće pri određivanju ukupne energetske efikasnosti brodova ovog tipa. Na osnovu svih podataka prikupljenih iz literature do kojih je bilo moguće doći, ali i dostupnih izveštaja, oformljena je baza sa osnovnim dimenzijama i rezultatima merenja apsorpcije snage velikog broja različitih tipova rečnih samohotki. Formirana baza je poslužila kao osnova za istraživanja hidrodinamičkih pojava do kojih dolazi pri plovidbi. U okviru istraživanja je sproveden niz neposrednih merenja apsorpcije snage na brodovima u realnim uslovima. Ovo je omogućilo proširenje formirane baze, ali i ukazalo na kompleksnost postupka merenja iz čega proističu nekada i velike razlike između raspoloživih rezultata merenja apsorpcije snage na istom brodu, ali i između modelskih ispitivanja i ispitivanja brodova u prirodnoj veličini. Na osnovu rezultata modelskih ispitivanja razvijen je matematički model pomoću koga se za poznate dimenzije i nosivost broda, kao i ograničenja plovnog iv puta može proceniti snaga koju je neophodno angažovati u cilju postizanja željene brzine..., This dissertation has originated from many years of research on the issue of propulsion of inland-waterway self-propelled cargo vessels (IWV). Hydrodynamic effects stemming from complex conditions related to IWV navigation make selecting the appropriate propulsion system during the project phase a very complex and challenging task. A particularly important issue is the scarcity of methods for determining the influence of waterway restrictions on hydrodynamic efficiency. This produces difficulties when determining the overall energy efficiency of these ship types. Based on all the data collected from the available references and reports, a database was created containing basic dimensions and results of power absorption measurements of many different types of IWV. The data served as a basis for research devoted to navigation-related hydrodynamic effects. During the course of the research, numerous direct measurements of ship power absorption in realistic conditions were performed. This enabled the expansion of the aforementioned base, but also indicated the complexity of measurement methods, which occasionally produce considerable differences between the available results of power absorption measurements of the same ship, but also between examinations of models and corresponding full-scale IWV. Based on the available results of model-scale examinations, a mathematical model was developed that can determine the power required for achieving the desired speed, on the basis of the known ship dimensions and displacement, as well as waterway restrictions. The analysis of full-scale ships examinations and comparisons of model and full-scale measurements, along with the application of existing methods of determining the effects of external influences, led to the formulation of recommendations for estimating power vi power margin. A method was indicated, based on the examination of full-scale ships, whereby the propulsion coefficients depending on waterway restrictions can be determined...", publisher = "Univerzitet u Beogradu, Mašinski fakultet", title = "Energetska efikasnost rečnih samohodnih teretnih brodova, Energy efficiency of inland waterway self-propelled cargo vessels", url = "https://hdl.handle.net/21.15107/rcub_nardus_2309" }
Simić, A.. (2012). Energetska efikasnost rečnih samohodnih teretnih brodova. Univerzitet u Beogradu, Mašinski fakultet.. https://hdl.handle.net/21.15107/rcub_nardus_2309
Simić A. Energetska efikasnost rečnih samohodnih teretnih brodova. 2012;. https://hdl.handle.net/21.15107/rcub_nardus_2309 .
Simić, Aleksandar, "Energetska efikasnost rečnih samohodnih teretnih brodova" (2012), https://hdl.handle.net/21.15107/rcub_nardus_2309 .