Analysis of sloshing in a cargo hold carrying liquid cargo.

FLOW-3D is a three-dimensional computational fluid dynamics (CFD) modeling software that helps solve challenging free surface flow problems. FLOW-3D provides a convenient and cost-effective way to simulate these processes.

HHULLULL D DESIGNESIGN

Flow around the hull of ships is an important focus for engineers. Many aspects of the flow past the hull need to be examined, including the resistance (drag), stern boundary layer, streamwise vortices, and velocity field at the propeller plane. FLOW-3D is a valuable tool for predicting these values. SSLOSHINGLOSHING D DYNAMICSYNAMICS

The effect of severe sloshing motion on global seagoing vessels is an important factor in the safety design of such vessels. Ships can experience significant internal pressures due to wave dynamics. The violent motion of fuel or liquid cargo in tanks may result in severe sloshing loads on the containment system and supporting structure.

683 Harkle Road, Suite A Santa Fe, NM 87505

Phone: 505-982-0088 Fax: 505-982-5551

email: cfd@flow3d.com www.flow3d.com

FLOW-3D

FLOW SCIENCE

Marine Engineers can optimize designs of:

• Hulls

• Onboard fuel tanks

• Cargo holds

• Ventilation systems FLOW-3D gives engineers powerful design capabilities by combining accurate free surface modeling with the ability to model moving objects coupled with fluid motion.

Why FLOW-3D? • Three-dimensional

simulations

• Transient, free surface problems

• Easy setup and gridding

• Accurate representation of complex geometry

• Multiple mesh blocks to increase efficiency and flexibility

Excellence in Flow Modeling

Software

AAPPLICATIONSPPLICATIONS TOTO M MARITIMEARITIME E ENGINEERINGNGINEERING

HHOWOW DOESDOES FLOWFLOW--3D3D WWORKORK??

FLOW-3D’s special numerical methods track the location of free surfaces accurately and apply the proper dynamic boundary conditions at those surfaces. Called TruVOF, FLOW-3D’s method for modeling fluids goes beyond the traditional Volume of Fluid (VOF) techniques to achieve the most accurate tracking of fluid surfaces to capture wave dynamics.

FAVORFAVORTM TM M MAKESAKES M MODELINGODELING F FLOWLOW ININ C COMPLEXOMPLEX S STRUCTURESTRUCTURES E EASYASY!!

One of the most powerful and unique features of FLOW-3D is its FAVORTM (Fractional Area/Volume Obstacle Representation) method, which permits true representation of complex geometry in a simple Cartesian mesh. As a result, FLOW-3D can be used to simulate flow in hydraulics structures accurately and efficiently.

VVENTILATIONENTILATION S SYSTEMSYSTEMS

The inside of the ship—ventilation of internal compartments, such as engine rooms where heat generation can affect both performance and comfort—must also be considered. FLOW-3D has been used to improve the efficiency of cooling systems to maintain a specified temperature differential between interior compartments and the external environment.

WWAVEAVE I IMPACTMPACT E EFFECTSFFECTS

The prediction of critical loads on marine structures such as oil production platforms in random storm waves is critical. Physical mechanisms leading to water on deck and bow flare slamming, and the resulting responses, must also be analyzed. FLOW-3D simulations can predict:

• water propagation on the deck • resulting impact load on structures • large-scale wave-propagation and its impact on columns

Evaluation of forces imparted by waves hitting sea superstructures.

Analysis of circulation of air within engine room (courtesy of XC Engineering, Italy).

A propeller is easily meshed in FLOW-3D’s graphical user interface (top left). A close-up of the mesh (top right) translates to solid geometry (lower right) for the FLOW-3D solver, after the FAVORTM method is applied.

FLOW-3D and TruVOF are registered trademarks of Flow Science, Inc.