Definitions

1. Boundary layers are thinner at the leading edge of an aircraft wing and thicker toward the trailing edge. (Web site)
2. Boundary layers are laminar or turbulent, or somewhere in between. (Web site)
3. Boundary layers are present in problems from physics, engineering, mechanics, and fluid mechanics and typically appear for problems with small diffusion.
4. Laminar boundary layers are normally very desirable because they reduce drag on most shapes.
5. Flow in boundary layers is more easily described mathematically than is flow in the free stream. (Web site)

Types

1. In general there are two types of boundary layers: the laminar and the turbulent. (Web site)

Trailing

1. The flow in such boundary layers is generally laminar at the leading or upstream portion and turbulent in the trailing or downstream portion.

Leading Edge

1. The high fluid pressure near the leading edge impels flow about the cylinder as boundary layers develop about both sides.

Prandtl Number

1. If the Prandtl number is 1, the two boundary layers are the same thickness.

Surface

1. Multiple types of boundary layers can coexist near a surface simultaneously.

Airflow

1. Turbulent Boundary Layer: In the turbulent state, the airflow in the boundary layers interacts or mixes at the surface of the vehicle. (Web site)

Viscous

1. Boundary layers appear on the surface of bodies in viscous flow because the fluid seems to "stick" to the surface (*see note).

Drag

1. The wake is very small, and the drag is dominated by the viscous friction inside the boundary layers. (Web site)

Airfoils

1. The behavior of boundary layers, especially on the suction sides of the airfoils, strongly influences airfoil performance. (Web site)

Compressible

1. Major topics include: Incompressible non-viscous flow, Compressible flow, and Viscous flow (including an introduction to boundary layers).

Reynolds Number

1. This friction is associated with the development of boundary layers, and it scales with Reynolds number as we have seen above. (Web site)

Fluid Mechanics

1. In fluid mechanics, external flow is such a flow that boundary layers develop freely, without constraints imposed by adjacent surfaces.

Trailing Edge

1. At the trailing edge, the boundary layers from the two sides meet and form the wake. (Web site)

Boundary

1. Boundary layers The concept of a boundary layer is important in many aerodynamic problems.
2. Boundary layer control refers to methods of controlling the behaviour of fluid flow boundary layers. (Web site)

Skin Friction

1. One must observe the phenomena of skin friction and boundary layers to understand flow. (Web site)

Turbulence

1. As boundary layers move downstream, they tend to grow naturally and undergo transition to turbulence. (Web site)
2. Boundary layers, gas dynamics, and theories of turbulence are covered in relation to the latest theories and practices. (Web site)

Laminar

1. All boundary layers begin as laminar boundary layers. (Web site)
2. Unfortunately, laminar boundary layers, which have the lowest drag are also the most susceptible to separation. (Web site)
3. Four final chapters deal at some length with creeping flow, laminar boundary layers, hydrodynamic instability, and turbulent flow.

Turbulent Boundary Layers

1. A practical technique is needed for reducing the friction effects of turbulent boundary layers while not simultaneously contributing to other types of drag. (Web site)
2. Riblets are small v-grooves aligned with the flow that are designed to reduce the skin friction of turbulent boundary layers.
3. The reason lies in different effects laminar and turbulent boundary layers have on flow separation. (Web site)

Turbulent

1. The main areas covered are laws of motion for a viscous fluid, laminar boundary layers, transition and turbulence, and turbulent boundary layers. (Web site)
2. Turbulent boundary layers have a laminar sub-layer next to the surface, but are mainly characterized by swirling random eddies throughout the boundary layer. (Web site)
3. It is shown that the kinetic boundary layers on the top- and bottom plate have some features of both laminar and turbulent boundary layers. (Web site)

Boundary Layers

1. Boundary layers may be either laminar (layered), or turbulent (disordered) depending on the value of the Reynolds number.
2. Sessions include areas in vortex dynamics, low and high speed flows, boundary layers, instability, transition, and turbulence.
3. Associated terminology The incompressible and compressible flow regimes produce many associated phenomena, such as boundary layers and turbulence. (Web site)

Categories

1. Turbulent
2. Laminar
3. Information > Science > Physics > Turbulence
4. Incompressible
5. Boundary

Subcategories

Transition Point

1. Books about "Boundary Layers" in Amazon.com
   

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