Abstract
This chapter discusses the use of hybrid grids to fit the topography and shorelines in a 3D, hydrodynamic model: LESS 3D (Lake and Estuarine Simulation System in Three Dimensions). The model solves flux-based finite difference equations in the Cartesian-coordinate system (x, y, z). The grid cells used in the model include—regular boxes with six rectangular faces and boundary cells (at least one face is the water-solid interface) whose faces are generally not rectangular. By using the bilinear interpolation, the shape of a boundary/bottom cell can be determined. The hybrid grids that include the regular rectangular boxes and multiface cells—allow the Cartesian coordinate model to fit both the topography and the boundary (shorelines) accurately. Because this method does not require any coordinate transformation, it can be used as an alternative to the curvilinear grid model. An example flow simulation of the Alafia River, FL is also presented in the chapter to demonstrate the robustness of the approach used.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
