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Tutorials and Model Library

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Unsteady Laminar Flow Over a Cylinder
The unsteady laminar flow over a circular cylinder is simulated at a Reynolds number of 150. CFD-ACE+ predicted results are compared with experimental Strouhal numbers.

Steady Taylor-Couette Flow
The viscous flow between two concentric cylinders is often referred to as the Taylor-Couette flow. At low Reynolds numbers, the flow is steady and purely azimuthal and analytical solutions can be found for the velocity profile and torque experienced by the...

Flow Near an Oscillating Flat Plate
The analysis of incompressible flow near an oscillating flat plate (also identified as Stokes 2nd Problem) is a long established problem in fluid mechanics, and an analytical solution is readily available. In this example, CFD-ACE+ predicted velocity...

Flow Near an Impulsively Started Flat Plate
The analysis of incompressible flow near an impulsively started flat plate (also identified as Stokes 1st problem) is a long established problem in fluid mechanics, and an analytical solution is readily available. CFD-ACE+ Solution is compared with...

Flow Near an Infinite Rotating Disk
The steady flow resulting from an infinite disk rotating at a constant angular velocity in a Newtonian viscous fluid which would otherwise be at rest is considered. The viscous drag of the rotating surface will set up a swirling flow, with the fluid at the...

Laminar Flow in a Squeeze Bearing
Squeeze bearing is one of a variety of non-contact bearings that uses squeeze-film flow effects in order to support a given load without contact between the bearing and its underlying surfaces.  In the squeeze bearing variants analyzed here, rectangular...

Flow in a Diminishing Narrow Gap - One Cell Model
Flow within narrow gaps is common in the field of lubrication. Hydrostatic bearings support large loads by producing a thin film of fluid between two surfaces/parts in relative motion. Diminishing gap between two surfaces filled with a lubricating fluid...

Lubrication in a Narrow Gap (Slipper Bearing) - One Cell Model
Slipper bearings, also known as tilted pad thrust bearings can support large loads by setting up a pressure gradient within a narrow passage. It consists of a horizontal plate moving with a velocity U relative to another plate at a slight inclination to...

Viscous Flow in an Annular Passage
The steady state viscous flow in the passage between two concentric cylinders is considered. The inner cylinder is a solid and the outer cylinder is hollow thus creating the passage. Pressure difference between the inlet and outlet sets up a steady flow...

Laminar Flow in a Pipe
Laminar flows in pipes typically occur at Reynolds numbers less than 2000 and are also known as the Hagen-Poiseuille flow. When flow fully develops, the velocity profile across the channel would be parabolic and the pressure drops linearly along the length...