Ayres Knowledge Center Computational Fluid Dynamics

Computational Fluid Dynamics Computational fluid dynamics (CFD), also known as three-dimensional (3D) hydraulic modeling, is a practical way to predict and visualize how water flows in real-world conditions. CFD solves fundamental flow equations that describe how physical laws govern fluid motion. CFD provides detail and insight that one-dimensional (1D) and two-dimensional (2D) hydraulic models cannot deliver by resolving the flow in three directions. Using CFD, we can deliver the practical benefits of physical modeling in a reasonable time and budget. WHAT BENEFITS DOES CFD DELIVER? 1D and 2D hydraulic models are effective tools for large- scale, hydraulically straightforward applications. Ayres has pioneered and championed 2D hydraulic modeling’s practical implementation, and it has become the method of choice for many design applications. However, 2D modeling is not the best solution for certain complex hydraulic problems. CFD IS VERSATILE FOR USE IN MANY APPLICATIONS, INCLUDING: • Dam structures • Aquatic Organism Passage (AOP) In these cases, designers have historically either accepted undefined hydraulic uncertainly or have used physical modeling. High uncertainty requires conservative (potentially overbuilt) designs or it could result in underperforming solutions. Physical models can be reliable, but are often prohibitively expensive and time-consuming. • River features CFD puts another tool in the Ayres hydraulic modeling toolbox that reduces risk and uncertainty while allowing us to deliver effective design solutions and cost savings for these complex hydraulic problems. • Wastewater treatment systems Risk Mitigation – Cost Savings – Reduced Uncertainty • Stormwater structures • Sediment transport and scour • Stormwater best management practice devices • Water treatment tanks and processes • Decision-making demonstrations 800.666.3103 www.AyresAssociates.com