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It is one of the most disastrous and unpredictable weather phenomena faced by pilots. Turbulence is the sudden violent movement of air, water, or other liquids. CFD Simulation for Laminar and Turbulent Flow Once again, rather than investing in constant prototyping and physical stress testing, CFD simulation can be used to test a variety of design variables to find the most ideal construction of rotating machinery. What is essential here is to be able to determine the dynamic rotor force that creates instability.
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The gas passing through the seals often creates a driving force that leads to unstable rotor vibration. Labyrinth seals are used in various rotating types of machinery to reduce leakage flow. Rotating machinery such as compressors, steam pumps, gas turbines, and turbo-expanders have one thing in common: the cyclic load acting on the structure. They can measure at a very granular level to compare alternative products and designs to improve flexibility, durability, and safety of their projects. But most instruments are not sensitive enough to accurately measure this type of damage.Ĭavitation simulation through CFD, however, can help engineers set tiny thresholds that would be difficult to measure in the physical world. It’s very difficult to detect cavitation-caused damage to a component during physical stress testing - because the damage is gradual, and shows no obvious effects until it reaches a critical threshold.įor example, one way to measure cavitation damage to a propeller is by using instruments to measure vibrations and noise. Cavitation can cause damage to propellers, nozzles, turbines, spillways, and valves.Ĭavitation is a critical fluid dynamics problem that impacts a wide swath of engineering domains. CFD Simulation for Preventing CavitationĬavitation is the formation of vapor bubbles within a liquid, and occurs when an object (such as a propellor) moves through the liquid.
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This technology is used in areas like cavitation prevention, aerospace engineering, HVAC engineering, electronics manufacturing, and way more.īelow is a list of the most common CFD simulation applications in use today. Computational fluid dynamics (CFD) is a science that uses data structures to solve issues of fluid flow - like velocity, density, and chemical compositions.