Details
| Original language | German |
|---|---|
| Pages | 54-59 |
| Number of pages | 6 |
| Publication status | Published - 2000 |
Abstract
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2000. 54-59.
Research output: Contribution to conference › Paper › Research › peer review
}
TY - CONF
T1 - Spatial evolution of laboratory generated freak waves in deep water depth
AU - Schlurmann, Torsten
AU - Lengricht, Joachim
AU - Graw, Kai-Uwe
N1 - Cited By :9 Export Date: 1 February 2021
PY - 2000
Y1 - 2000
N2 - In the present paper experimental generated Freak Waves are investigated as they are defined as transient waves existing in one certain location in one definite instant in time (Kaldenhoff & Schlurmann, 1999). Freak Waves occur due to superposition of numerous wave components of a real sea state and are typically characterized by an extreme waveheight. Moreover, it is determined that Freak Waves are sometimes identified by spilling breaking (Schlurmann, 1999 or Kway et al., 1998). The characteristics of Freak Waves were investigated in spatial domain. Interestingly, laboratory generated waves with extreme waveheights show significant similarities to results from field observations from real sea states, e.g. observed by Sand et al. (1989), Yasuda et al. (1997) or Rozario et al. (1993). Furthermore, a state-of-the-art stereo-PIV system is used to analyse the flow phenomena underneath a transient wave at the very moment of breaking. Since velocities and accelerations can be recorded in the wave field particle image velocimetry can give important hints to new aspects in analysing the dynamics of Freak Waves. However, evaluations of flow fields using this technique are an immense improvement in hydrodynamics, but further studies have to be carried out.
AB - In the present paper experimental generated Freak Waves are investigated as they are defined as transient waves existing in one certain location in one definite instant in time (Kaldenhoff & Schlurmann, 1999). Freak Waves occur due to superposition of numerous wave components of a real sea state and are typically characterized by an extreme waveheight. Moreover, it is determined that Freak Waves are sometimes identified by spilling breaking (Schlurmann, 1999 or Kway et al., 1998). The characteristics of Freak Waves were investigated in spatial domain. Interestingly, laboratory generated waves with extreme waveheights show significant similarities to results from field observations from real sea states, e.g. observed by Sand et al. (1989), Yasuda et al. (1997) or Rozario et al. (1993). Furthermore, a state-of-the-art stereo-PIV system is used to analyse the flow phenomena underneath a transient wave at the very moment of breaking. Since velocities and accelerations can be recorded in the wave field particle image velocimetry can give important hints to new aspects in analysing the dynamics of Freak Waves. However, evaluations of flow fields using this technique are an immense improvement in hydrodynamics, but further studies have to be carried out.
KW - Acceleration
KW - Flow visualization
KW - Hydrodynamics
KW - Imaging systems
KW - Oceanography
KW - Velocity
KW - Velocity measurement
KW - Deep water depth
KW - Freak waves
KW - Particle image velocimetry system
KW - Spatial domain
KW - Spilling breaking
KW - Water waves
M3 - Paper
SP - 54
EP - 59
ER -