Fluid Mechanics Demo - Help choose dye

Thread starter gpavanb
Start date Apr 8, 2011
Tags

Fluid Fluid mechanics Mechanics

In summary, the purpose of dye in fluid mechanics demos is to visualize the flow of fluids and demonstrate various principles. Food coloring is the most commonly used dye, as it is accessible, non-toxic, and provides strong contrast. The addition of dye does not significantly affect the properties of the fluid being studied, but it may slightly increase viscosity and density. Not all types of dye are suitable for these demos, and it is important to choose a highly visible and non-toxic option. When adding dye, it should be done slowly and carefully to ensure an even distribution and avoid creating air bubbles.

Apr 8, 2011

gpavanb

Hi,

I am planning to do this as a demo in my fluid mechanics class.

I've used glycerine as corn syrup isn't available. It seems to be transparent and viscous enough. Can anyone please suggest a dye? The video seems to be using coloured corn syrup for flow visualization. How can I colour my glycerine?

Please reply ASAP.

Last edited by a moderator: Sep 25, 2014

Engineering news on Phys.org

Apr 8, 2011

boneh3ad

Science Advisor

Insights Author

Gold Member

Food coloring?

Related to Fluid Mechanics Demo - Help choose dye

1. What is the purpose of the dye in fluid mechanics demos?

The dye is used to visualize the flow of fluids and to demonstrate various principles of fluid mechanics, such as laminar and turbulent flow, viscosity, and mixing. It allows for a more tangible and visual understanding of the concepts being taught.

2. Which type of dye is commonly used in fluid mechanics demos?

The most commonly used dye in fluid mechanics demos is food coloring. It is easily accessible, non-toxic, and provides a strong contrast against most fluids.

3. How does the addition of dye affect the properties of the fluid being studied?

The addition of dye does not significantly affect the properties of the fluid being studied. However, it may slightly increase the viscosity and density of the fluid, depending on the type and amount of dye used.

4. Can any type of dye be used in fluid mechanics demos?

No, not all types of dye are suitable for fluid mechanics demos. It is important to choose a dye that is highly visible, non-toxic, and does not significantly alter the properties of the fluid being studied. Food coloring is the most commonly used dye for this purpose.

5. How should the dye be added to the fluid for the most accurate results?

The dye should be added in small amounts and mixed thoroughly with the fluid before starting the experiment. This ensures an even distribution of dye and minimizes any potential disturbances in the fluid flow. It is also important to add the dye slowly and carefully to avoid creating air bubbles in the fluid.