Computational Mechanics Research and Support for Aerodynamics ...

Table of Contents
1. Introduction and Objectives ................................................................................................................. 8
1.1. Computational Fluid Dynamics Summary ........................................................................................ 8
1.2. Computational Multiphyics Mechanics Summary ........................................................................... 9
2. Computational Fluid Dynamics for Hydraulic and Aerodynamic Research ........................................ 11
2.1. Entrainment Functions for RANS Scour Models and Tests of Alternatives ................................... 11
2.2. Initial Test of Mesh Morphing Applied to Transient Clear Water Pressure Flow Scour ................ 13
2.2.1. References .......................................................................................................................... 16
2.3. Computational Modeling and Analysis of Flow through Large Culverts for Fish Passage ............. 16
2.3.1. Model of Culvert Section with Fully Developed Flow Using Cyclic Boundary Conditions .. 18
2.3.2. Mesh Refinement Study ...................................................................................................... 19
2.3.3. Simulation Results and Discussion ...................................................................................... 22
2.3.4. Three Dimensional Model of Culvert Flume with Comparison to Experimental Results ... 30
2.3.5. Flow Conditions ................................................................................................................... 31
2.3.6. Results Using VOF Multiphase Model ................................................................................. 32
2.3.7. Comparison with the Single Phase Model .......................................................................... 33
2.3.8. Comparison with Laboratory Data ...................................................................................... 34
2.3.9. References .......................................................................................................................... 39
3. Computational Multiphysics Mechanics Applications ........................................................................ 40
3.1. Multiphysics Simulation of Salt Spray Transport ........................................................................... 40
3.1.1. Estimate for Water Content in Semi-Trailer Truck’s Wake ................................................. 40
3.1.2. Simulation of a Semi-trailer Truck Passing Through a Bridge Underpass ........................... 45
3.2. Wind Engineering ........................................................................................................................... 54
3.2.1. Vehicle Stability under High Wind Loadings ....................................................................... 55
3.2.2. Electromagnetic Shock Absorber for Vehicle Stability under High Wind Conditions ......... 65
3.3. A Coupling of CFD and CSM Codes for Scour Shape Prediction..................................................... 71
3.3.1. Introduction ........................................................................................................................ 71
3.3.2. Scour Slope Stability Based on Soil Mechanics ................................................................... 71
3.3.3. Procedure Flowchart ........................................................................................................... 72