Influence of basin geometry on equilibrium and stability of double inlet systems

R.L. Brouwer; H.M. Schuttelaars; Pieter C. Roos

doi:10.3990/2.175

Influence of basin geometry on equilibrium and stability of double inlet systems

R.L. Brouwer, H.M. Schuttelaars, Pieter C. Roos

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

This study investigates the influence of basin geometry on the cross-sectional stability of double inlet systems. The inlet is in equilibrium when the amplitude of the inlet velocities equals the equilibrium velocity (~1 m s-1). This equilibrium is stable when after a perturbation the cross-sections of both inlets return to their original equilibrium value. The necessary amplitudes of the inlet velocities are obtained using an idealized 2DH hydrodynamic that calculates tidal elevation and flow in a geometry consisting of several adjacent rectangular compartments. Model results suggest that regardless of the inclusion or exclusion of bottom friction in the basin, stable equilibrium states exist. Qualitatively, the influence of basin geometry does not change the presence of stable equilibrium. Quantitatively, however, taking a basin surface area of 1200 km2, equilibrium values can differ up to a factor 2 depending on the geometry of the basin.

Original language	English
Title of host publication	NCK-days 2012. Crossing borders in coastal research. Jubilee conference proceedings
Editors	W.M. Kranenburg, E.M. Horstman, K.M. Wijnberg
Place of Publication	Enschede
Publisher	University of Twente
Pages	85-89
ISBN (Print)	978-90-365-3342-3
DOIs	https://doi.org/10.3990/2.175
Publication status	Published - 13 Mar 2012
Event	NCK-Days 2012: Crossing borders in coastal research - Enschede, Netherlands Duration: 13 Mar 2012 → 16 Mar 2012

Conference

Conference	NCK-Days 2012
Country/Territory	Netherlands
City	Enschede
Period	13/03/12 → 16/03/12

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10.3990/2.175

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Jubilee Conference Proceedings NCK-days 2012: Crossing borders in coastal research
Kranenburg, W. M. (Editor), Horstman, E. M. (Editor) & Wijnberg, K. M. (Editor), 2012, Enchede: University of Twente. 256 p.
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title = "Influence of basin geometry on equilibrium and stability of double inlet systems",

abstract = "This study investigates the influence of basin geometry on the cross-sectional stability of double inlet systems. The inlet is in equilibrium when the amplitude of the inlet velocities equals the equilibrium velocity (~1 m s-1). This equilibrium is stable when after a perturbation the cross-sections of both inlets return to their original equilibrium value. The necessary amplitudes of the inlet velocities are obtained using an idealized 2DH hydrodynamic that calculates tidal elevation and flow in a geometry consisting of several adjacent rectangular compartments. Model results suggest that regardless of the inclusion or exclusion of bottom friction in the basin, stable equilibrium states exist. Qualitatively, the influence of basin geometry does not change the presence of stable equilibrium. Quantitatively, however, taking a basin surface area of 1200 km2, equilibrium values can differ up to a factor 2 depending on the geometry of the basin.",

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booktitle = "NCK-days 2012. Crossing borders in coastal research. Jubilee conference proceedings",

publisher = "University of Twente",

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note = "NCK-Days 2012 : Crossing borders in coastal research ; Conference date: 13-03-2012 Through 16-03-2012",

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Brouwer, RL, Schuttelaars, HM & Roos, PC 2012, Influence of basin geometry on equilibrium and stability of double inlet systems. in WM Kranenburg, EM Horstman & KM Wijnberg (eds), NCK-days 2012. Crossing borders in coastal research. Jubilee conference proceedings. University of Twente, Enschede, pp. 85-89, NCK-Days 2012, Enschede, Netherlands, 13/03/12. https://doi.org/10.3990/2.175

Influence of basin geometry on equilibrium and stability of double inlet systems. / Brouwer, R.L.; Schuttelaars, H.M.; Roos, Pieter C.
NCK-days 2012. Crossing borders in coastal research. Jubilee conference proceedings. ed. / W.M. Kranenburg; E.M. Horstman; K.M. Wijnberg. Enschede: University of Twente, 2012. p. 85-89.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Influence of basin geometry on equilibrium and stability of double inlet systems

AU - Brouwer, R.L.

AU - Schuttelaars, H.M.

AU - Roos, Pieter C.

PY - 2012/3/13

Y1 - 2012/3/13

N2 - This study investigates the influence of basin geometry on the cross-sectional stability of double inlet systems. The inlet is in equilibrium when the amplitude of the inlet velocities equals the equilibrium velocity (~1 m s-1). This equilibrium is stable when after a perturbation the cross-sections of both inlets return to their original equilibrium value. The necessary amplitudes of the inlet velocities are obtained using an idealized 2DH hydrodynamic that calculates tidal elevation and flow in a geometry consisting of several adjacent rectangular compartments. Model results suggest that regardless of the inclusion or exclusion of bottom friction in the basin, stable equilibrium states exist. Qualitatively, the influence of basin geometry does not change the presence of stable equilibrium. Quantitatively, however, taking a basin surface area of 1200 km2, equilibrium values can differ up to a factor 2 depending on the geometry of the basin.

AB - This study investigates the influence of basin geometry on the cross-sectional stability of double inlet systems. The inlet is in equilibrium when the amplitude of the inlet velocities equals the equilibrium velocity (~1 m s-1). This equilibrium is stable when after a perturbation the cross-sections of both inlets return to their original equilibrium value. The necessary amplitudes of the inlet velocities are obtained using an idealized 2DH hydrodynamic that calculates tidal elevation and flow in a geometry consisting of several adjacent rectangular compartments. Model results suggest that regardless of the inclusion or exclusion of bottom friction in the basin, stable equilibrium states exist. Qualitatively, the influence of basin geometry does not change the presence of stable equilibrium. Quantitatively, however, taking a basin surface area of 1200 km2, equilibrium values can differ up to a factor 2 depending on the geometry of the basin.

U2 - 10.3990/2.175

DO - 10.3990/2.175

M3 - Conference contribution

SN - 978-90-365-3342-3

SP - 85

EP - 89

BT - NCK-days 2012. Crossing borders in coastal research. Jubilee conference proceedings

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A2 - Horstman, E.M.

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PB - University of Twente

CY - Enschede

T2 - NCK-Days 2012

Y2 - 13 March 2012 through 16 March 2012

ER -

Influence of basin geometry on equilibrium and stability of double inlet systems

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Jubilee Conference Proceedings NCK-days 2012: Crossing borders in coastal research

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