🔍 Ever wondered how experiments with small-scale models translate to real-world applications?
We often get asked, "How do you compare model size experiments with real-life scenarios?" and even, "Why are there LEGO-men on top of your models?"
While it might seem complex to scale down both size and time for an experiment, the principles behind it are incredibly fascinating.
🎥 In this video, Morten Kramer takes us behind the scenes at Aalborg University's state-of-the-art basin to explain the magic of Froude scaling.
He'll show you how our small-scale models, complete with LEGO figures, can accurately predict real-world outcomes.
It's all about turning miniature experiments into full-scale data, bridging the gap between theory and practical application.
Don't miss this chance to gain insight into how scaling in model testing is not just possible but essential for accurate real-world simulations.
Whether you're a seasoned engineer or simply curious about how science brings models to life, this video is for you!
🔗 Watch the video and join the conversation!
#EngineeringExcellence#FroudeScaling#ModelTesting#RealWorldApplications#Innovation#AalborgUniversity#Hydrodynamics#ScaleModeling#STEM#ResearchAndDevelopment
Hello, I'm Morgan. Maybe you have seen some of the small videos from this small scale experiments and maybe you have wondered. Why is the model the size that it is? In this video I'll talk about scaling and the reasons for why the model is the size that it as it is. You may also have seen. That there are these two small Lego men on top of the platform and if I put the ruler here we can see they are exactly 3.5cm high. Why are they so small? Let me take you through a little tour to give you an impression about the scaling. The bottle you see is a scale 1 to 50 of full scale, but what does that mean? So we have. Scale. One through 50. Me myself. I am 175 centimeters high approximately. What would a modern minion be at this scale? 175 divided by the scale of 50. That is 3.5 centimeters. That's exactly the height of those two small ligament over there. So now we have the length and size scale in place. What about time, velocity and so forth? Well. For experiments like this where it's the gravity that is dominating the flow. Then it's the Fort number. It's a dimension now number. I think after William Fort which? It is defined as. The velocity divided by the square root of TL. So it's the speed length ratio. And the fraud scaling implies that the fraud number at model scale must be the same as the fraud number at full scale. And when you look into this. The period of emotion or the wave period? At, at at. Full scale is then the square root of the scale. Multiplied by the period at model scale sqrt 50, that's about 7. Times. The model scale. So if we have a wave period of one second in the tank in the wave base and then that would correspond to a period in full scale of seven seconds. In similar way for velocities, if we have a velocity at full scale, it also scales with sqrt 50. So seven times the velocity at model scale. So if we see a wave that is propagating through the basin or the response of the model in model scale experiments, then it will be 7 times faster than it is in reality. So that has to be taken into consideration when you look at the videos where the wave is propagating. Let me show you that. In the left hand side I've included a video in real time from the wave basin, says that model scale. It's for regular wave but a wave height of 10 centimeters and a wave period of 1.8 seconds. The incident wave is combined with search motion of the platform and full scale. The wave height is 50 times larger, so 5 meters. The wave period is 7 times longer, so 13 seconds. In the right hand side you see a slow motion video of the same test where the speed has been slowed down by a factor of 7 to visualize the effect of the time. Trailing by watching this video, I hope you now have an understanding of how scaling in babasin experiments is done.
