Naslov
Validation of Rigid Body Motion and Computational Fluid Dynamics in Spectral Space

Autori
Filip Volarić

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, diplomski rad, diplomski

Fakultet
Fakultet strojarstva i brodogradnje

Mjesto
Zagreb

Datum
08.12

Godina
2007

Stranica
108

Mentor
Hrvoje Jasak

Ključne riječi
CFD ; Free Surface Flows ; Frequency domain ; Harmonic Balance ; Rigid Body Dynamics

Sažetak
Over the last decade the Harmonic Balance (HB) method was developed in the field of Computer Fluid Dynamics (CFD). HB method transforms a transient periodic problem into a set of coupled steady-state problems. Although the HB method was first applied to single-phase flows in the field of turbomachinery, it is also applicable to two- phase free surface flows which can be found in the field of naval hydrodynamics. In the field of naval hydrodynamic it is very important to accurately assess the drag force of the ship in waves during the design process, so it is necessary to couple fluid flow and motion of the ship. Hence, the HB method can only be used in the assessment of drag force if the corresponding spectral rigid body motion algorithm is developed. Therefore, in this thesis HB method is described first, which is used to simulate flow, and then the detailed description of spectral rigid body motion algorithm is given. The new algorithm is validated with two test cases. Results of the first case are compared to an analytical solution, and results of the second case are compared with a transient simulation.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA