A robust multi-grid pressure-based algorithm for multi-fluid flow at all speeds

2003 ◽  
Vol 41 (11) ◽  
pp. 1221-1251 ◽  
Author(s):  
M. Darwish ◽  
F. Moukalled ◽  
B. Sekar
Keyword(s):  
Fluid Flow ◽  
All Speeds

Reducing Roll Motion by Passive Free Surface Tanks

2014 ◽  
Author(s):  
Christian S. Nielsen ◽  
Ulrik D. Nielsen
Keyword(s):  
Mathematical Model ◽  
Fluid Flow ◽  
Free Surface ◽  
Flow Model ◽  
Low Cost ◽  
Roll Motion ◽  
Numerical Example ◽  
Damping Effect ◽  
Cargo Capacity ◽  
All Speeds

Roll stabilisation of motorised vessels plays an important part in reducing passenger discomfort and increasing safety and cargo capacity. Passive free surface tanks are considered a low-cost stabilising method, which is efficient at all speeds without increasing hull resistance. In this study, a mathematical model for evaluating the performance of a passive free surface tank is established. This is done by coupling a roll model to a fluid flow model. As a numerical example, the seakeeping abilities of a container vessel are evaluated. The necessary methods for performing the simulation are presented and the design of a free surface tank is explained. The effects of the passive free surface tank are evaluated and a significant damping effect is observed, particularly in cases with resonant roll.

Unstructured Adaptive Mesh Refinement and Coarsening for Fluid Flow at All Speeds Using a Coupled Solver

2009 ◽  
Author(s):  
M. Darwish ◽  
J. Rached ◽  
F. Moukalled ◽  
Theodore E. Simos ◽  
George Psihoyios ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Adaptive Mesh Refinement ◽  
Mesh Refinement ◽  
Adaptive Mesh ◽  
All Speeds
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