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Every article tagged “CFD”.
38 articles
How stirred tank CFD handles power draw, blend time, dead zones and shear: MRF, sliding mesh and large-eddy simulation compared, why scale-up criteria fail, how agitator loads reach FEA, and where surrogates over impeller diameter, speed and clearance help without replacing a tracer test.
How aeroelastic analysis couples CFD loads to a structural model: conservative load transfer, jig shape versus flight shape, one-way versus two-way coupling, gust loads, flutter and its documented scatter on NASA benchmark cases, and where reduced-order models and surrogates help.
How transonic CFD simulation predicts wing drag, shock position and buffet onset, what the open AIAA Drag Prediction Workshops show about its scatter, how to set up mesh convergence, turbulence models and drag decomposition, and where a surrogate of the aerodynamic database must not extrapolate.
How airframe noise simulation works for landing gear and high-lift devices: tonal and broadband sources, CFD with a Ffowcs Williams-Hawkings step, mesh and record limits, array and tunnel validation, certification context and where AI surrogates help.
How wind turbine CFD handles the rotor, the wake and the atmosphere: blade-resolved versus actuator models, stability, blockage and terrain, what validation data exist, how loads reach blade FEA, and where surrogates help layout and yaw studies without replacing measurement.
How helicopter rotor CFD captures blade-vortex interaction, retreating-blade stall, rotor-fuselage wake and tail shake, how loose and tight CFD/CSD coupling work, what published validation studies show, and how a surrogate over a loads database is built without replacing flight test.
How drone aerodynamics simulation handles propeller thrust maps, propeller-airframe interaction, ground effect, gusts and low-Reynolds-number wings, when a rotating reference frame is enough, where learned residual models help flight dynamics, and what simulation leaves to flight test and the authority.
How CFD predicts downforce, drag and aero balance for race and high-performance road cars: ground effect, rolling-road and wheel boundary conditions, RANS against DES, correlation with the tunnel on open DrivAer data, and aero maps with surrogates that state their range.
How a spring-driven autoinjector and a prefilled syringe load each other: drive force, stopper break-loose and glide, viscous flow through a thin needle, impact on the glass and seal contact. What a model reports, how it is validated for a stated use, and how a surrogate screens choices.
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