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In fluid dynamics, the radiation stress is the depth-integrated – and thereafter phase-averaged – excess momentum flux caused by the presence of the surface gravity waves, which is exerted on the mean flow. The radiation stresses behave as a second-order tensor. The radiation stress tensor describes the additional forcing due to the presence of the waves, which changes the mean depth-integrated horizontal momentum in the fluid layer. As a result, varying radiation stresses induce changes in the mean surface elevation (wave setup) and the mean flow (wave-induced currents).

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  • Golfspanning (nl)
  • Radiation stress (en)
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  • In fluid dynamics, the radiation stress is the depth-integrated – and thereafter phase-averaged – excess momentum flux caused by the presence of the surface gravity waves, which is exerted on the mean flow. The radiation stresses behave as a second-order tensor. The radiation stress tensor describes the additional forcing due to the presence of the waves, which changes the mean depth-integrated horizontal momentum in the fluid layer. As a result, varying radiation stresses induce changes in the mean surface elevation (wave setup) and the mean flow (wave-induced currents). (en)
  • In de vloeistofmechanica is de golfspanning (Engels: radiation stress) de diepte-geïntegreerde — en vervolgens fasegemiddelde — overmatige impulsstroom, veroorzaakt door de aanwezigheid van de oppervlaktegolven, die wordt uitgeoefend op de gemiddelde stroming. Deze verandering van deze spanning aan de kust levert een kracht op het water, die verantwoordelijk is voor de golfgedreven brandingsstroom en voor de golfopzet. De golfspanningen gedragen zich als een tweede-orde tensor. (nl)
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