Tomić, Denis and Degiuli, Nastia (2014) Približna metoda proračuna ukupnog otpora glisera. = An approximate method for total resistance calculation of the planing hulls. In: XXI. simpozij Teorija i praksa brodogradnje, in memoriam prof. Leopold Sorta = The 21st symposium Theory and practice shipbuilding, in memoriam prof. Leopold Sorta, 02-04.10.2014., Baška; Croatia.
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Približna metoda proračuna otpora glisera.pdf - Published Version Jezik dokumenta:Croatian Download (397kB) | Preview |
Abstract (Croatian)
U radu su opisani problemi određivanja ukupnog otpora glisirajućih formi u mirnoj vodi te načini određivanja ukupnog otpora istih. Pored rezultata modelskih ispitivanja najčešći načini su upotreba približnih proračuna ukupnog otpora glisera. Izrađen je programski alat za proračun ukupnog otpora i trima glisirajućih formi u programu excel. Programski alat se temelji na matematičkom modelu koji je razvio profesor Radojčić za proračun otpora, trima, oplakane površine i duljine oplakane površine glisirajućih formi primjenom regresijske analize na rezultate ispitivanja sistematskih Serija 62. Matematički model je funkcija četiri parametra trupa i opterećenja (parametar opterećenja, omjer duljine i širine zgiba, uzdužni položaj težišta mase i kut nagiba dna). Alat omogućuje brzi proračun ukupnog otpora i trima na osnovu ulaznih parametara glisirajućih formi u svrhu odabira najboljeg projekta u fazi predprojekta. Izrađeni alat je testiran na dostupnim eksperimentalnim podacima iz literature.
Abstract
The paper describes the problems and approaches to determining the total resistance of planing hulls in calm water. In addition to the results of model tests the most common ways for predicting the total resistance are approximate calculations of the total resistance of a planning hull. For this purpose the software tool for calculation of the total resistance and trim of planing hulls has been made in excel program. The software tool is based on a mathematical model developed by professor Radojčić for calculation of the total resistance, trim, wetted surface and the length of wetted surface of planing hulls established by regression analysis of data of systematic Series 62. The mathematical model is a function of four hull form and loading parameters (loading coefficient, ratio of length to beam, longitudinal center of gravity location and deadrise angle). The tool allows fast calculation of the total resistance and trim on the basis of input parameters of planing hulls in order to select the best project in the early stage of ship design. The software tool has been tested on available experimental data from the literature.
| Item Type: | Conference or Workshop Item (Lecture) |
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| Uncontrolled Keywords: | gliser; ukupni otpor; trim; oplakana površina; regresijska analiza |
| Keywords (Croatian): | planing hull; total resistance; trim; wetted surface; regression analysis |
| Subjects: | TECHNICAL SCIENCE > Shipbuilding |
| Divisions: | 600 Department of Naval Engineering and Marine Technology > 610 Chair of Hydromechanics of Marine Structures |
| Indexed in Web of Science: | No |
| Indexed in Current Contents: | No |
| Date Deposited: | 15 May 2015 08:57 |
| Last Modified: | 02 Oct 2017 11:29 |
| URI: | http://repozitorij.fsb.hr/id/eprint/4155 |
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