AFT Application Topics
Stagnation vs. Static Pressure
Pressure definitions are at times ambiguous when performing calculations. AFT software is equipped to handle each definition presented for the user. Stagnation pressure is also known as total pressure and accounts for the dynamic pressure and the static pressure. This is best represented with a pitot tube pointed into the direction of flow. The static pressure does not consider any buildup of pressure resulting from local velocities and is represented with a pressure tap normal to flow. Assigned pressure junctions allow users to specify which pressure definition they would like to use. Mid-pipeline applications will use static properties, while reservoirs or similar boundary conditions are best modeled with stagnation properties.
Video – Static vs. Stagnation Pressure