![]() Ramjets can be found in various supersonic aircraft, such as the SR-71 Blackbird featured above. ![]() By increasing the pressure, the diffuser also helps enhance the performance of the combustor, which in turn makes the aircraft more fuel efficient. The diffuser slows down the airflow in the engine to subsonic speeds so that it doesn’t extinguish the burner and also helps minimize flow losses. ![]() For instance, ramjets (also called “flying stovepipes”) are a type of air-breathing jet engine that use diffusers as inlets. These abilities are useful for various applications, including helping HVAC systems evenly distribute air, reducing pressure losses in supersonic ejectors, minimizing turbulence in centrifugal pumps, and reducing drag in race cars.ĭiffusers are important components in supersonic aircraft propulsion systems. Slowing Supersonic Speeds with Transonic Diffusers As this benchmark model illustrates, these complex phenomena can be accurately analyzed using the COMSOL® software. ![]() To design transonic diffusers for supersonic applications, engineers must account for factors like high-speed turbulent flow and shock waves. For example, diffusers are often used in supersonic aircraft like ramjets to slow down fluid flow and increase static pressure. From home HVAC systems to spacecraft ejectors, diffusers find use in all kinds of applications. ![]()
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