Team for Advanced Flow Simulation and Modeling
For more information:
Flow Past the Spillway of the Olmsted Dam
We investigate the water flow in the spillway of the Olmsted Dam on the Ohio River. The dam was under the study by the U.S. Army Corps of Engineers for possible modifications of the spillway bed. Several experimental models were constructed with the aim of analyzing the candidate designs for the scour protection of the spillway bed. The geometric model represents a 48 feet wide section of the navigation pass crest and stilling basin, and includes a long upstream channel, the spillway crest, and a set of underwater obstacles designed to dissipate the energy of the flow. The mesh consists of 164,952 space-time nodes and 480,469 tetrahedral space-time elements. The top surface of the mesh is free and allowed to move in the vertical direction. A stabilized mesh surface movement mechanism is employed. In the interior of the domain, the position of the nodes is being updated based on a linear elasticity formulation. The 637,696 flow equations and the 209,008 mesh displacement equations are solved iteratively using the GMRES update technique. The figure below shows the pressure field and the free surface in the final stages of the time-dependent simulation. This problem was computed on a CM-5.
The unstructured mesh generator, flow solver, and flow visualization software (based on Ensight) were developed by T*AFSM.
1. T.E. Tezduyar, "Stabilized Finite Element Formulations for Incompressible Flow Computations", Advances in Applied Mechanics, 28 (1991) 1-44.
2. T.E. Tezduyar, M. Behr and J. Liou, "A New Strategy for Finite Element Computations Involving Moving Boundaries and Interfaces--The DSD/ST Procedure: I. The Concept and the Preliminary Numerical Tests", Computer Methods in Applied Mechanics and Engineering, 94 (1992) 339-351.
3. T.E. Tezduyar, M. Behr, S. Mittal and J. Liou, "A New Strategy for Finite Element Computations Involving Moving Boundaries and Interfaces--The DSD/ST Procedure: II. Computation of Free-surface Flows, Two-liquid Flows, and Flows with Drifting Cylinders", Computer Methods in Applied Mechanics and Engineering, 94 (1992) 353-371.
4. T. Tezduyar, "Advanced Flow Simulation and Modeling", Flow Simulation with the Finite Element Method (in Japanese), Springer-Verlag, Tokyo, Japan (1998).
5. T. Tezduyar, "CFD Methods for Three-Dimensional Computation of Complex Flow Problems", Journal of Wind Engineering and Industrial Aerodynamics, 81 (1999) 97-116.
6. I. Guler, M. Behr and T.E. Tezduyar, "Parallel Finite Element Computation of Free-Surface Flows", Computational Mechanics, 23 (1999) 117-123.
7. T. Tezduyar and Y. Osawa, "Methods for Parallel Computation of Complex Flow Problems", Parallel Computing, 25 (1999) 2039-2066.