Morphodynamic upscaling with the MORFAC approach

Roshanka Ranasinghe; Cilia Swinkels; Arjen Luijendijk; Judith  Bosboom; Dano Roelvink; Marcel Stive; Dirkjan  Walstra

doi:10.9753/ICCE.V32.SEDIMENT.59

Morphodynamic upscaling with the MORFAC approach

Roshanka Ranasinghe, Cilia Swinkels, Arjen Luijendijk, Judith Bosboom, Dano Roelvink, Marcel Stive, Dirkjan Walstra

Coastal Engineering

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

117 Citations (Scopus)

37 Downloads (Pure)

Abstract

The Morphological Acceleration Factor (MORFAC) approach for morphodynamic upscaling enables the simulation of long term coastal evolution. However the general validity of the MORFAC concept for coastal applications has not yet been comprehensively investigated. Furthermore, a robust and objective method for the a priori determination of the highest MORFAC that is suitable for a given simulation (i.e. critical MORFAC) does not currently exist. This paper presents some initial results of an ongoing, long-term study that attempts to rigorously and methodically investigate the limitations and strengths of the MORFAC approach. Based on the results of a numerical modelling exercise using the morphodynamic model Delft3D, the main dependencies and sensitivities of the MORFAC approach are investigated. Also, a criterion is proposed for the a priori determination of the critical MORFAC, based on the CFL condition for bed form migration.

Original language	English
Title of host publication	Proceedings of 32nd Conference on Coastal Engineering, ICCE 2010
Editors	Jane McKee Smith, Patrick Lynett
Publisher	ICCE
Number of pages	7
Volume	32
DOIs	https://doi.org/10.9753/ICCE.V32.SEDIMENT.59
Publication status	Published - 2011
Event	32nd International Conference on Coastal Engineering - s.l., Shanghai, China Duration: 30 Jun 2010 → 5 Jul 2010 Conference number: 32

Conference

Conference	32nd International Conference on Coastal Engineering
Abbreviated title	ICCE 2010
Country/Territory	China
City	Shanghai
Period	30/06/10 → 5/07/10

Keywords

Delft3D
Long term coastal evolution
MORFAC
Morphodynamic modelling

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10.9753/ICCE.V32.SEDIMENT.59

Morphodynamic upscaling with the morfac approachFinal published version, 224 KB

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title = "Morphodynamic upscaling with the MORFAC approach",

abstract = "The Morphological Acceleration Factor (MORFAC) approach for morphodynamic upscaling enables the simulation of long term coastal evolution. However the general validity of the MORFAC concept for coastal applications has not yet been comprehensively investigated. Furthermore, a robust and objective method for the a priori determination of the highest MORFAC that is suitable for a given simulation (i.e. critical MORFAC) does not currently exist. This paper presents some initial results of an ongoing, long-term study that attempts to rigorously and methodically investigate the limitations and strengths of the MORFAC approach. Based on the results of a numerical modelling exercise using the morphodynamic model Delft3D, the main dependencies and sensitivities of the MORFAC approach are investigated. Also, a criterion is proposed for the a priori determination of the critical MORFAC, based on the CFL condition for bed form migration.",

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Ranasinghe, R, Swinkels, C, Luijendijk, A , Bosboom, J , Roelvink, D , Stive, M & Walstra, D 2011, Morphodynamic upscaling with the MORFAC approach. in J McKee Smith & P Lynett (eds), Proceedings of 32nd Conference on Coastal Engineering, ICCE 2010. vol. 32, 1085, ICCE, 32nd International Conference on Coastal Engineering, Shanghai, China, 30/06/10. https://doi.org/10.9753/ICCE.V32.SEDIMENT.59

Morphodynamic upscaling with the MORFAC approach. / Ranasinghe, Roshanka; Swinkels, Cilia; Luijendijk, Arjen et al.
Proceedings of 32nd Conference on Coastal Engineering, ICCE 2010. ed. / Jane McKee Smith; Patrick Lynett. Vol. 32 ICCE, 2011. 1085.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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AU - Swinkels, Cilia

AU - Luijendijk, Arjen

AU - Bosboom, Judith

AU - Roelvink, Dano

AU - Stive, Marcel

AU - Walstra, Dirkjan

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N2 - The Morphological Acceleration Factor (MORFAC) approach for morphodynamic upscaling enables the simulation of long term coastal evolution. However the general validity of the MORFAC concept for coastal applications has not yet been comprehensively investigated. Furthermore, a robust and objective method for the a priori determination of the highest MORFAC that is suitable for a given simulation (i.e. critical MORFAC) does not currently exist. This paper presents some initial results of an ongoing, long-term study that attempts to rigorously and methodically investigate the limitations and strengths of the MORFAC approach. Based on the results of a numerical modelling exercise using the morphodynamic model Delft3D, the main dependencies and sensitivities of the MORFAC approach are investigated. Also, a criterion is proposed for the a priori determination of the critical MORFAC, based on the CFL condition for bed form migration.

AB - The Morphological Acceleration Factor (MORFAC) approach for morphodynamic upscaling enables the simulation of long term coastal evolution. However the general validity of the MORFAC concept for coastal applications has not yet been comprehensively investigated. Furthermore, a robust and objective method for the a priori determination of the highest MORFAC that is suitable for a given simulation (i.e. critical MORFAC) does not currently exist. This paper presents some initial results of an ongoing, long-term study that attempts to rigorously and methodically investigate the limitations and strengths of the MORFAC approach. Based on the results of a numerical modelling exercise using the morphodynamic model Delft3D, the main dependencies and sensitivities of the MORFAC approach are investigated. Also, a criterion is proposed for the a priori determination of the critical MORFAC, based on the CFL condition for bed form migration.

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PB - ICCE

T2 - 32nd International Conference on Coastal Engineering

Y2 - 30 June 2010 through 5 July 2010

ER -

Morphodynamic upscaling with the MORFAC approach

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Keywords

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