Multilayer Downskin Surface Optimization

Uploaded April 2026 | Updated September 2026, 1 week ago

Printing overhanging features in laser powder bed fusion presents challenges for surface quality, as downskin layers are built on loose powder rather than solidified material. This FLOW-3D AM simulation demonstrates multilayer IN718 LPBF printing at a 45-degree angle, used to optimize downskin surface roughness. CFD modeling helps engineers identify process parameters that improve as-printed surface finish on overhanging features. Learn more at flow3d.com/products/flow3d-am

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$Air Entrainment at a Labyrinth Spillway | FLOW-3D HYDRO This example of a labyrinth weir spillway illustrates FLOW-3D HYDROs air entrainment physics in a one-fluid volume of fluid model. The air entrainment physics estimate the rate at which gas (represented by void regions) is entrained into the flow using a balance of stabilizing forces (gravity and surface tension) and destabilizing forces (turbulence). Although the primary focus of the model is to compute the air entrainment resulting from turbulent disturbances at a free surface, the model also contains logic for handling entrainment resulting from laminar jets impinging on a free surface. In this video, the fluid is colored by the entrained air volume fraction calculated by the air entrainment physics. Learn more about FLOW-3D HYDRO, an industry leader in free-surface flow modeling and is used by dam professionals to address a wide range of design problems. https://www.flow3d.com/products/flow-3d-hydro/dams-and-spillways/$