• Dispersive Wave Focusing on a Shear Current: Part 1—Linear Approximations 

      Ellingsen, Simen Ådnøy; Zheng, Zibo; Abid, Malek; Kharif, Christian; Li, Yan (Journal article; Peer reviewed, 2024)
      We consider the evolution and kinematics during dispersive focussing, for a group of waves propagating atop currents varying with depth. Our analysis assumes long-crested linear waves propagating at arbitrary angles relative ...
    • Dispersive Wave Focusing on a Shear Current: Part 2—Nonlinear Effects 

      Zheng, Zibo; Li, Yan; Ellingsen, Simen Ådnøy (Journal article; Peer reviewed, 2024)
      Continuing our recent work [Ellingsen et al., Water Waves (2024)] we investigate the influence of vertically sheared currents on the surface elevation as well as the kinematics of dispersively focusing wave groups up to ...
    • A Nonlinear Formulation of Radiation Stress and Applications to Cnoidal Shoaling 

      Paulsen, Martin Oen; Kalisch, Henrik (Journal article; Peer reviewed, 2021)
      In this article, we provide formulations of energy flux and radiation stress consistent with the scaling regime of the Korteweg–de Vries (KdV) equation. These quantities can be used to describe the shoaling of cnoidal waves ...
    • Wave Breaking in Undular Bores with Shear Flows 

      Bjørnestad, Maria; Kalisch, Henrik; Abid, Malek; Kharif, Christian; Brun, Mats (Journal article; Peer reviewed, 2021)
      It is well known that weak hydraulic jumps and bores develop a growing number of surface oscillations behind the bore front. Defining the bore strength as the ratio of the head of the undular bore to the undisturbed depth, ...