Abstract: The report describes experimental data obtained from a wind-wave flume study conducted ... more Abstract: The report describes experimental data obtained from a wind-wave flume study conducted August-September 2006 at the University of Michigan in Ann Arbor, MI. The study objectives were two-fold: to quantify wind effects on wave runup on fringing reefs of the ...
International Conference on Computers in Education, 2000
2 A coupled Boussinesq-boundary integral method is developed to simulate nonlinear water wave int... more 2 A coupled Boussinesq-boundary integral method is developed to simulate nonlinear water wave interaction with structures consisting of multiple layers with different physical and hydraulic characteristics. The flow field in the water region is modeled with a modified set of Boussinesq-type equations, with additional terms to account for the flow of water into/out of the porous region. The equations of
Real-time sea state measurements could be used to greatly enhance the safety and efficiency of of... more Real-time sea state measurements could be used to greatly enhance the safety and efficiency of offshore operations. In this paper, a variational data assimilation scheme is developed to improve ocean wave field estimates from marine navigation radars. The assimilation scheme minimizes a cost function which is defined as the difference between radar observations and predictions from a nonlinear wave evolution model over a time interval which is referred to as assimilation interval. An adjoint method is used to calculate the gradient of the cost function with respect to control variables, and the descent direction for minimization is obtained from tangent linear model. The proposed assimilation scheme is validated using synthetic and field data.
Abstract: The report describes experimental data obtained from a wind-wave flume study conducted ... more Abstract: The report describes experimental data obtained from a wind-wave flume study conducted August-September 2006 at the University of Michigan in Ann Arbor, MI. The study objectives were two-fold: to quantify wind effects on wave runup on fringing reefs of the ...
International Conference on Computers in Education, 2000
2 A coupled Boussinesq-boundary integral method is developed to simulate nonlinear water wave int... more 2 A coupled Boussinesq-boundary integral method is developed to simulate nonlinear water wave interaction with structures consisting of multiple layers with different physical and hydraulic characteristics. The flow field in the water region is modeled with a modified set of Boussinesq-type equations, with additional terms to account for the flow of water into/out of the porous region. The equations of
Real-time sea state measurements could be used to greatly enhance the safety and efficiency of of... more Real-time sea state measurements could be used to greatly enhance the safety and efficiency of offshore operations. In this paper, a variational data assimilation scheme is developed to improve ocean wave field estimates from marine navigation radars. The assimilation scheme minimizes a cost function which is defined as the difference between radar observations and predictions from a nonlinear wave evolution model over a time interval which is referred to as assimilation interval. An adjoint method is used to calculate the gradient of the cost function with respect to control variables, and the descent direction for minimization is obtained from tangent linear model. The proposed assimilation scheme is validated using synthetic and field data.
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