dimensional analysis / similarity analysis help


by victor_123
Tags: analysis, dimensional, similarity
victor_123
victor_123 is offline
#1
Dec24-10, 12:28 AM
P: 2
Iím currently investigation the fluid motion (diffusion) of gas's so see how well they can ventilate in an enclosure.

I would like to simulate this using a (1/10) scale model. The enclosure has already been built, and smoke pellets are going to be placed inside to help visualize fluid motion.

If I add a fan to simulate wind, will there have to be any scaling on its velocity to account for the 1-10 scale model and smoke pellets being used??

Any help or opinions are greatly appreciated

Thanks
Phys.Org News Partner Science news on Phys.org
NASA's space station Robonaut finally getting legs
Free the seed: OSSI nurtures growing plants without patent barriers
Going nuts? Turkey looks to pistachios to heat new eco-city
mrmiller1
mrmiller1 is offline
#2
Dec24-10, 03:28 AM
P: 51
I think so. If you have a model race track then a car traveling normal speeds on your scaled down track would be way too fast, right?

The mass transfer differential equation...
∂CA/∂t + v.∇CA = DAB2CA

Where v.∇CA is your convective mass transfer term and, as you can see, is entirely dependent on velocity.
victor_123
victor_123 is offline
#3
Dec30-10, 08:34 PM
P: 2
Thanks, thatís what I thought too. But Iím unsure of what parameters to use in the analysis. Any ideas people?

Thanks again


Register to reply

Related Discussions
Dimensional Analysis Introductory Physics Homework 5
Fluid Mechanics::Understanding Dim Analysis & Similarity Mechanical Engineering 5
Dimensional Analysis General Physics 26
Need help with this(dimensional analysis) Advanced Physics Homework 2
Help on Dimensional Analysis General Math 2