boneh3ad said:There really is no significance if both flows are incompressible and at the same Reynolds number. All it really means is that the air really was incompressible. The main reason you would want to use a water tunnel would be if you need to reach a flow regime that you were simply unable to achieve for one reason or another in air or if you for some reason needed it to be incredibly easy to do PIV or various flow visualization techniques or something along those lines. Otherwise they are essentially interchangeable in most cases where they can both be used.
I don't watch Mythbusters.boneh3ad said:Do you watch Mythbusters? Have you seen them inject neutrally buoyant dye into the water tunnel and watch it flow over their models? You can't really do that with air. Nothing visible is neutrally buoyant in air like that.
A repeating water tunnel study is a scientific experiment that involves testing the aerodynamic properties of a model in a wind tunnel while simultaneously subjecting it to water flow. This method allows for the simulation of real-life conditions in a controlled laboratory setting.
Repeating water tunnel studies in wind tunnels allows researchers to accurately study the effects of both air and water flow on a model. This is crucial for understanding and predicting the behavior of objects in real-world scenarios, such as aircrafts or ships, which are subjected to both air and water forces simultaneously.
One of the main advantages of using a repeating water tunnel for aerodynamic studies is the ability to replicate and control real-life conditions. This allows for more accurate and reliable results compared to traditional wind tunnel studies. Additionally, the use of water in the tunnel can provide a higher degree of precision and resolution in the data collected.
One of the main challenges of conducting repeating water tunnel studies in wind tunnels is the complexity of the setup and instrumentation. The use of water and air together requires specialized equipment and techniques, which can be costly and time-consuming to set up. Additionally, the interaction between the two fluids can be difficult to control and may introduce unexpected variables.
Repeating water tunnel studies in wind tunnels can provide valuable insights and data for industries such as aerospace and marine engineering. The results of these studies can inform the design and development of more efficient and effective products, leading to advancements in technology and improved safety for both air and sea travel.