Assuming mass does not also increase, then density decreases if volume increases. For example, let's say Mass= 100 and Volume= 50 Density would = 2 Now, lets increase the voluâ¦me. Mass would still = 100, and let's increase the volume to 75. Density would then equal 1.333... 2 is greater than 1.333....
Definition of wind tunnel. : a tunnellike passage through which air is blown at a known velocity to investigate air flow around an object (such as an airplane part or model) placed in the passage.
The ARC Moving Ground Wind Tunnel. 1  The ARC wind tunnel is one of the world leading tools used in aerodynamic development today. Our tunnel can test up to 50% scale models replicating full scale racing, production, commercial, and military vehicles to a very high level of detail. 2  The ARC Wind Tunnel is a commercially and publicly available.