Vukčević, Vuko and Werner, Andreja and Degiuli, Nastia (2012) SPH simulacija Poiseulleovog strujanja pri niskim Reynoldsovim brojevima. = SPH simulation of Poiseuille flow at low Reynolds numbers. In: XX. simpozij Teorija i praksa brodogradnje, in memoriam prof. Leopold Sorta = The 20th symposium Theory and practice shipbuilding, in memoriam prof. Leopold Sorta, 27-29.09.2012., Zagreb; Croatia.
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SPH SIMULACIJA POISEULLEOVOG STRUJANJA PRI NISKIM.pdf - Published Version Jezik dokumenta:Croatian Download (185kB) | Preview |
Abstract (Croatian)
U ovom radu je ukratko opisana metoda hidrodinamike izglađenih čestica (engl. “Smoothed particle hydrodynamics”) ili SPH metoda za simulaciju problema dinamike fluida koja se zasniva na sustavu čestica. SPH metoda aproksimira kontinuum s konačnim brojem čestica koje nose fizikalna svojstva te ujedno služe kao čvorovi u kojima se aproksimiraju funkcije polja. Prikazana je integralna aproksimacija funkcija polja i njenih derivacija pomoću jezgrenih funkcija, kao i aproksimacija česticama. Da bi osigurale konzistentnost određenog reda, jezgrene funkcije moraju zadovoljiti uvjete koji su u radu prikazani. Razvijen je računalni kod za simulaciju Poiseuilleovog strujanja. Pokazano je da se dobiveni rezultati vrlo dobro slažu s analitičkim rješenjem. Kao i svaka numerička metoda, SPH metoda također ima svoje prednosti i nedostatke koji su primijećeni kroz teorijska razmatranja i kroz praksu, te su ovdje ukratko navedeni.
Abstract
This paper briefly describes the smoothed particle hydrodynamics method or SPH method for simulating fluid dynamics phenomena, which is based on a system of particles. The SPH method approximates the continuum with a finite number of particles that carry the physical properties and also serve as approximation points in which the field functions are approximated. Integral approximation of the field functions and its derivatives are described using kernel functions, and particle approximations as well. To ensure the consistency of a particular order, kernel functions must satisfy the conditions presented in the paper. Computer code has been developed for simulating the Poiseuille flow. It is shown that the obtained results agree fairly well with the analytical solution. As with any numerical method, the SPH method also has its advantages and disadvantages that are observed through theoretical considerations and through practice, and are summarized here.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Uncontrolled Keywords: | hidrodinamika izglañenih čestica; jezgrene funkcije; Poiseuilleovo strujanje |
| Keywords (Croatian): | smoothed particle hydrodynamics; kernel smoothing functions; Poiseuille flow |
| Subjects: | TECHNICAL SCIENCE > Shipbuilding TECHNICAL SCIENCE > Mechanical Engineering |
| Divisions: | 500 Department of Energy, Power Engineering and Environment > 530 Chair of Turbomachinery 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: | 14 May 2015 08:08 |
| Last Modified: | 19 Sep 2017 15:23 |
| URI: | http://repozitorij.fsb.hr/id/eprint/4136 |
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