IH Cantabria

• INICIO
• EL INSTITUTO
• INVESTIGACIÓN
• FORMACIÓN
• TRANSFERECIA TECNOLÓGICA
• INSTALACIONES
• SOFTWARE
• COMUNICACION

SOFTWARE

• Introduction
• Harbour Oscillation Model
• Wave-Structure Interaction Model
• Integrated Coastal Management Software
• Oil Spill Transport Model

MARIFE – Modelo de Interacción Flujo Estructura

MARIFE is a numerical tool to study two-dimensional wave flow for any class of conventional or non-conventional structures, and on laboratory scales as well as at prototype scales. The model is able to simulate the flow characteristics for any class of structure: permeable or impermeable, submerged or emerged, single-layered or multi-layered, etc, for several wave characteristics, regular or irregular waves or linear or non-linear waves. There is no limitation for structure geometries or wave characteristics.

MARIFE can be used as a virtual numerical flume to complement physical experiments reducing time cost (related with the duration of the experiment programs) and economical costs. Moreover, the model can be applied to the study of prototype structures, no matter conventional or non conventional structures, in which semi-empirical formulations has not been developed.

The model allows considering numerical wave gauges to record time history of calculated magnitudes as velocity, pressure or free surface evolution. The magnitudes can be extracted in any part of the domain, even inside the rubble mound layers. Derivated magnitudes such as wave induced forces on the structure (vertical or uplift forces) or overtopping flow rates, very difficult to get in physical experiments, can be calculated. Many other magnitudes related with the functionality or stability of coastal structures can be obtained by the model.

Applications

The model can be applied to both laboratory and prototype scale. A very important effort has been developed in the last years in order to get a rigours methodology to use the model. The methodology has been successfully applied in several works focus on the stability and functionality of coastal structures.

The model has been validated for the several coastal structure typologies as follows:

• Low crested strucutres (Garcia et al. 2004, Losada et al. 2005 y Lara et al. 2006)
• Gravel beaches and rubble mound revetments (Lara et al. 2006)
• Natural beaches (Torres-Freyermuth et al. 2007)
• Vertical breakwaters (Lara et al. 2008 y Guanche et al. 2009)
• Rubble mound breakwaters (Losada et al. 2008 y Guanche et al. 2009)

Case studies

In the functional analysis of coastal structures, the model allows to study conventional magnitudes, such as overtopping flow rate time evolution or accumulated overtopping volume. Moreover, other magnitudes such as the layer thickness of the overtopped waves, the velocity of the overtopping fluid or the maximum overtopping volume can be obtained bridging a gap to more complex analysis.

A parallel analysis can be applied to stability studies. Because the model provides pressure information around the structures, pressure laws, forces and moments can be calculated. Time evolution of the variables can be used to obtain more complex and useful variables as safety coefficients.

Ejemplo de simulación a escala de prototipo de un dique rompeolas en el que se estudia la estabilidad del espaldón (figura superior) y el rebase sobre ésta en forma de caudal de rebase acumulado y de volumen instantáneo de rebase (figura inferior).