At low speeds and over short distances, flow with no disturbances is laminar. Laminar flow is characterized by smooth flow past surface with no motion perpendicular to surface. Imagine stretching taffy. What is happening is viscosity of the fluid (water or air) damps out minor flow variations (eddies). Boundary layer starts with zero viscosity at surface and smooth transitions to full flow a fraction of an inch from surface. It's as if the flow were thin lamina.
Wednesday, February 25, 2015
Design Workshop - Laminar Flow
This is really cool...so I couldn't not post it. In the Design Workshop we discussed flows around hulls and foils. Flows can be either laminar or turbulent. Below is a short description and video on laminar flows:
At low speeds and over short distances, flow with no disturbances is laminar. Laminar flow is characterized by smooth flow past surface with no motion perpendicular to surface. Imagine stretching taffy. What is happening is viscosity of the fluid (water or air) damps out minor flow variations (eddies). Boundary layer starts with zero viscosity at surface and smooth transitions to full flow a fraction of an inch from surface. It's as if the flow were thin lamina.
At low speeds and over short distances, flow with no disturbances is laminar. Laminar flow is characterized by smooth flow past surface with no motion perpendicular to surface. Imagine stretching taffy. What is happening is viscosity of the fluid (water or air) damps out minor flow variations (eddies). Boundary layer starts with zero viscosity at surface and smooth transitions to full flow a fraction of an inch from surface. It's as if the flow were thin lamina.
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