9 papers
Variational Principle for Velocity-Pressure Formulation of Navier-Stokes Equations
Shahrdad G. Sajjadi
The work described here shows that the known variational principle for the Navier-Stokes equations and the adjoint system can be modified to produce a set of Euler-Lagrange variati…
Interaction of Tollmien-Schlichting Waves in the Air with the Sea Surface
Shahrdad G. Sajjadi, Harihar Khanal
Linear stability of fully developed flows of air over water is carried out in order to study non-linear effects in the generation of solitons by wind. A linear stability analysis o…
Stability of Fully Nonlinear Stokes Waves on Deep Water: Part 1. Perturbation Theory
Shahrdad G. Sajjadi, David L. Ross
We consider a full set of harmonics for the Stokes wave in deep water in the absence of viscosity, and examine the role that higher harmonics play in modifying the classical Benjam…
Growth of unsteady wave groups by shear flows
S. G. Sajjadi, J. C. R. Hunt, F. Drullion
A weakly nonlinear theory has been proposed and developed for calculating the energy- transfer rate to individual waves in a group. It is shown what portion of total energy- transf…
A Study of Energy Transfer of Wind and Ocean Waves
Mason Bray, Sharhdad G. Sajjadi
To develop a better understanding of energy transfer between wind and different types of waves a model was created to determine growth factors and energy transfers on breaking wave…
An asymptotic analysis for generation of unsteady surface waves on deep water by turbulence
S. G. Sajjadi
The detailed mathematical study of the recent paper by Sajjadi, Hunt and Drullion (2014) is pre- sented. The mathematical developement considered by them, for unsteady growing mono…