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  • Modelling structures with reflecting, transmitting, and absorption properties

    Simulation of transmissive structures
  • Simulation of transmissive structures
  • Simulation of transmissive structures
  • Simulation of transmissive structures
  • Simulation of transmissive structures

Simulation of transmissive structures

We carried out a research study to examine the partial transmission of wave energy through (or over) structures and the simulation of transmissive structures within the numerical model, ARTEMIS.

ARTEMIS is part of the TELEMAC suite of models. Our study comprised two parts:

Data collation

The aim of the first part of our work was to create a database that could be quickly and easily accessed to obtain information on the transmission properties of a variety of structures. This information could be used, for example, for engineering design or within a numerical wave model study.

Transmission data are available through the database for the following types of structure:

Modelling development

The second part of our study enhanced the capability of ARTEMIS in modelling situations where a transmissive structure is involved. Previously, only solid structures (such as breakwaters or harbour walls with full, partial or no reflection) or fully transmissive structures (open piled piers, for example) could be included in ARTEMIS.

We developed a clear, practical method to model structures with specific properties of reflection, transmission and absorption. This was achieved by creating a discontinuous wall made out of ‘virtual’ rectangular blocks and gaps. This makes it possible to simulate structures with differing properties of transmission, reflection and absorption by:

The method, with clear instructions on its implementation, is described in our report IT583.

The project has increased HR Wallingford’s capacity to both:

References

Grey, SM and Alderson, JS 2009. Wave transmission through structures. Report IT 582, Release 1.0.

 

Authors  Stephen Grey; John Alderson
Keywords Wave transmission; Breakwaters; Wave modelling
Completed  2008 

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"We developed a clear, practical method to model structures with specific properties of reflection, transmission and absorption."

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