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Coastal Engineering: Theory and Practice
Fig. 3.4 Radiation stress (caused by waves).
and the reduced pressure acting on a reduced area (under wave trough).
The mean value of the pressure fluctuations integrated over the depth is not
equal to zéro, but a positive. This positive value of the integrated pressure
fluctuations forms one part of the radiation stress. Another contribution is
found by the non-zero integrated velocity fluctuations.
I ig. 3.5 Wave-induced changes in horizontal momentum caused by pressure and
velocity fluctuations.
The radiation stress is found to be the wave-induced contribution of
horizontal momentum (to the mean balance of momentum). Since, a rate of
transfer of momentum is équivalent to a force [second law of Newton: F dt =
d (mv)\, the change in radiation stress is the wave-induced contribution of
Coastal Engineering: Theory and Practice
Fig. 3.4 Radiation stress (caused by waves).
and the reduced pressure acting on a reduced area (under wave trough).
The mean value of the pressure fluctuations integrated over the depth is not
equal to zéro, but a positive. This positive value of the integrated pressure
fluctuations forms one part of the radiation stress. Another contribution is
found by the non-zero integrated velocity fluctuations.
I ig. 3.5 Wave-induced changes in horizontal momentum caused by pressure and
velocity fluctuations.
The radiation stress is found to be the wave-induced contribution of
horizontal momentum (to the mean balance of momentum). Since, a rate of
transfer of momentum is équivalent to a force [second law of Newton: F dt =
d (mv)\, the change in radiation stress is the wave-induced contribution of