The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform

Richard Bamford - One of the best experts on this subject based on the ideXlab platform.

  • equivalent Design Wave approach for calculating site specific environmental loads on an fpso
    ASME 2011 30th International Conference on Ocean Offshore and Arctic Engineering, 2011
    Co-Authors: Resmi Sarala, Mohammad Hajiarab, Richard Bamford
    Abstract:

    This paper demonstrates the method used by Lloyd’s Register (LR) to derive an equivalent Design Wave from a response based analysis (RBA) to represent extreme loads on a weather-vaning FPSO [1] and proceeds to compare the results with that of the industry practice of the response amplitude operator (RAO) based approach. The responses investigated include roll, pitch, vertical Wave bending moments, vertical Wave shear forces and vertical acceleration. The RBA is based on 3 hourly hindcast metocean data and uses the results of the heading analysis directly, considering the combined effect of wind, wind-sea, current and swell. An equivalent Design Wave is then derived based on the spectral characteristics of each response instead of the common practice for ship Design [2] which uses only the characteristics of the RAOs. For each response the Design Wave for the RBA and RAO approaches is compared. Deriving equivalent Design Waves using only the RAO characteristics is found to give some non-conservative and unrealistic equivalent Design Waves in some cases.Copyright © 2011 by ASME

  • equivalent Design Wave approach for calculating site specific environmental loads on an fpso
    ASME 2011 30th International Conference on Ocean Offshore and Arctic Engineering, 2011
    Co-Authors: Resmi Sarala, Mohammad Hajiarab, Richard Bamford
    Abstract:

    This paper demonstrates the method used by Lloyd’s Register (LR) to derive an equivalent Design Wave from a response based analysis (RBA) to represent extreme loads on a weather-vaning FPSO [1] and proceeds to compare the results with that of the industry practice of the response amplitude operator (RAO) based approach. The responses investigated include roll, pitch, vertical Wave bending moments, vertical Wave shear forces and vertical acceleration. The RBA is based on 3 hourly hindcast metocean data and uses the results of the heading analysis directly, considering the combined effect of wind, wind-sea, current and swell. An equivalent Design Wave is then derived based on the spectral characteristics of each response instead of the common practice for ship Design [2] which uses only the characteristics of the RAOs. For each response the Design Wave for the RBA and RAO approaches is compared. Deriving equivalent Design Waves using only the RAO characteristics is found to give some non-conservative and unrealistic equivalent Design Waves in some cases.Copyright © 2011 by ASME

Resmi Sarala - One of the best experts on this subject based on the ideXlab platform.

  • equivalent Design Wave approach for calculating site specific environmental loads on an fpso
    ASME 2011 30th International Conference on Ocean Offshore and Arctic Engineering, 2011
    Co-Authors: Resmi Sarala, Mohammad Hajiarab, Richard Bamford
    Abstract:

    This paper demonstrates the method used by Lloyd’s Register (LR) to derive an equivalent Design Wave from a response based analysis (RBA) to represent extreme loads on a weather-vaning FPSO [1] and proceeds to compare the results with that of the industry practice of the response amplitude operator (RAO) based approach. The responses investigated include roll, pitch, vertical Wave bending moments, vertical Wave shear forces and vertical acceleration. The RBA is based on 3 hourly hindcast metocean data and uses the results of the heading analysis directly, considering the combined effect of wind, wind-sea, current and swell. An equivalent Design Wave is then derived based on the spectral characteristics of each response instead of the common practice for ship Design [2] which uses only the characteristics of the RAOs. For each response the Design Wave for the RBA and RAO approaches is compared. Deriving equivalent Design Waves using only the RAO characteristics is found to give some non-conservative and unrealistic equivalent Design Waves in some cases.Copyright © 2011 by ASME

  • equivalent Design Wave approach for calculating site specific environmental loads on an fpso
    ASME 2011 30th International Conference on Ocean Offshore and Arctic Engineering, 2011
    Co-Authors: Resmi Sarala, Mohammad Hajiarab, Richard Bamford
    Abstract:

    This paper demonstrates the method used by Lloyd’s Register (LR) to derive an equivalent Design Wave from a response based analysis (RBA) to represent extreme loads on a weather-vaning FPSO [1] and proceeds to compare the results with that of the industry practice of the response amplitude operator (RAO) based approach. The responses investigated include roll, pitch, vertical Wave bending moments, vertical Wave shear forces and vertical acceleration. The RBA is based on 3 hourly hindcast metocean data and uses the results of the heading analysis directly, considering the combined effect of wind, wind-sea, current and swell. An equivalent Design Wave is then derived based on the spectral characteristics of each response instead of the common practice for ship Design [2] which uses only the characteristics of the RAOs. For each response the Design Wave for the RBA and RAO approaches is compared. Deriving equivalent Design Waves using only the RAO characteristics is found to give some non-conservative and unrealistic equivalent Design Waves in some cases.Copyright © 2011 by ASME

Mohammad Hajiarab - One of the best experts on this subject based on the ideXlab platform.

  • equivalent Design Wave approach for calculating site specific environmental loads on an fpso
    ASME 2011 30th International Conference on Ocean Offshore and Arctic Engineering, 2011
    Co-Authors: Resmi Sarala, Mohammad Hajiarab, Richard Bamford
    Abstract:

    This paper demonstrates the method used by Lloyd’s Register (LR) to derive an equivalent Design Wave from a response based analysis (RBA) to represent extreme loads on a weather-vaning FPSO [1] and proceeds to compare the results with that of the industry practice of the response amplitude operator (RAO) based approach. The responses investigated include roll, pitch, vertical Wave bending moments, vertical Wave shear forces and vertical acceleration. The RBA is based on 3 hourly hindcast metocean data and uses the results of the heading analysis directly, considering the combined effect of wind, wind-sea, current and swell. An equivalent Design Wave is then derived based on the spectral characteristics of each response instead of the common practice for ship Design [2] which uses only the characteristics of the RAOs. For each response the Design Wave for the RBA and RAO approaches is compared. Deriving equivalent Design Waves using only the RAO characteristics is found to give some non-conservative and unrealistic equivalent Design Waves in some cases.Copyright © 2011 by ASME

  • equivalent Design Wave approach for calculating site specific environmental loads on an fpso
    ASME 2011 30th International Conference on Ocean Offshore and Arctic Engineering, 2011
    Co-Authors: Resmi Sarala, Mohammad Hajiarab, Richard Bamford
    Abstract:

    This paper demonstrates the method used by Lloyd’s Register (LR) to derive an equivalent Design Wave from a response based analysis (RBA) to represent extreme loads on a weather-vaning FPSO [1] and proceeds to compare the results with that of the industry practice of the response amplitude operator (RAO) based approach. The responses investigated include roll, pitch, vertical Wave bending moments, vertical Wave shear forces and vertical acceleration. The RBA is based on 3 hourly hindcast metocean data and uses the results of the heading analysis directly, considering the combined effect of wind, wind-sea, current and swell. An equivalent Design Wave is then derived based on the spectral characteristics of each response instead of the common practice for ship Design [2] which uses only the characteristics of the RAOs. For each response the Design Wave for the RBA and RAO approaches is compared. Deriving equivalent Design Waves using only the RAO characteristics is found to give some non-conservative and unrealistic equivalent Design Waves in some cases.Copyright © 2011 by ASME

Giulia Pellegrini - One of the best experts on this subject based on the ideXlab platform.

  • Evaluation of Design Waves along the Adriatic coast of the Venice lagoon
    Coastal Engineering, 1995
    Co-Authors: David Hurdle, Paolo De Girolamo, Giulia Pellegrini
    Abstract:

    The prevention of flooding inside the Venice lagoon requires a system to disconnect the North Adriatic sea and the lagoon hydraulically in order to control the water level. This requires the definition of extreme Design Wave conditions for the various structures. This paper describes numerical modelling using a parametric Wave prediction model to derive the Design Wave conditions outside the inlets to the lagoon. This includes a description of a verification study using buoy measurements and a sensitivity study into the effect of uncertainty in the model parameter settings.

David Hurdle - One of the best experts on this subject based on the ideXlab platform.

  • Evaluation of Design Waves along the Adriatic coast of the Venice lagoon
    Coastal Engineering, 1995
    Co-Authors: David Hurdle, Paolo De Girolamo, Giulia Pellegrini
    Abstract:

    The prevention of flooding inside the Venice lagoon requires a system to disconnect the North Adriatic sea and the lagoon hydraulically in order to control the water level. This requires the definition of extreme Design Wave conditions for the various structures. This paper describes numerical modelling using a parametric Wave prediction model to derive the Design Wave conditions outside the inlets to the lagoon. This includes a description of a verification study using buoy measurements and a sensitivity study into the effect of uncertainty in the model parameter settings.

  • EVALUATION OF Design WaveS ALONG THE COAST AND AT THE INLETS OF THE VENICE LAGOON
    1993
    Co-Authors: Paolo De Girolamo, David Hurdle, Giancarlo Passacantando, A. Noli
    Abstract:

    The prevention of flooding inside the Venice lagoon requires a system to disconnect the North Adriatic sea and the lagoon hydraulically in order to control water level. This paper describe the method followed to define Design Wave conditions to support the Design of the new storm surge barriers. The derivation of Design Waves was not straightforward because of the presence of an extended continental platform and irregular geografic boundaries.