TY - GEN
T1 - Flow characteristics of air-caps for tank ventilation in ships
AU - Ergin, S.
PY - 2005
Y1 - 2005
N2 - Air-caps or tank vent check valves are employed in ships to allow tanks to breath during filling, draining and volume variations caused by thermal changes. A numerical study of flow in such a tank venting air-cap is performed to investigate turbulent flow and pressure drop characteristics. The method is based on the fully conserved control-volume representation of fully elliptic Navier-Stokes equations. The computational grid is established by employing the non-orthogonal body-fitted coordinate system and associating them with the multi-block to handle the complex geometry. Turbulence is simulated via two equation (k-ε) model. The study comprises computed velocity, the kinetic energy of turbulence and pressure drop distributions for three different sizes of air-caps. For each of these cases, the Reynolds number of the air-cap was varied from about 104 to 4.0 ×106.
AB - Air-caps or tank vent check valves are employed in ships to allow tanks to breath during filling, draining and volume variations caused by thermal changes. A numerical study of flow in such a tank venting air-cap is performed to investigate turbulent flow and pressure drop characteristics. The method is based on the fully conserved control-volume representation of fully elliptic Navier-Stokes equations. The computational grid is established by employing the non-orthogonal body-fitted coordinate system and associating them with the multi-block to handle the complex geometry. Turbulence is simulated via two equation (k-ε) model. The study comprises computed velocity, the kinetic energy of turbulence and pressure drop distributions for three different sizes of air-caps. For each of these cases, the Reynolds number of the air-cap was varied from about 104 to 4.0 ×106.
UR - http://www.scopus.com/inward/record.url?scp=60749115982&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:60749115982
SN - 9780415390361
T3 - Proceedings of the 12th International Congress of the International Maritime Association of the Mediterranean, IMAM 2005 - Maritime Transportation and Exploitation of Ocean and Coastal Resources
SP - 643
EP - 650
BT - Proceedings of the 12th International Congress of the International Maritime Association of the Mediterranean, IMAM 2005 - Maritime Transportation and Exploitation of Ocean and Coastal Resources
T2 - 12th International Congress of the International Maritime Association of the Mediterranean, IMAM 2005 - Maritime Transportation and Exploitation of Ocean and Coastal Resources
Y2 - 26 September 2005 through 30 September 2005
ER -