Vortex Dome STEM Desk Toy - Handmade in the UK by David Fowler

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This could be called a fidget toy, or a focus toy or perhaps a physics toy, or a science toy. There are many fluid toys but this really draws you in. Lakhovsky MWO harmonisation machine with bifilar Tesla coil, scalar wave antennae and tesseract aetheric pump

This resulted in just over 4 million cells which just about maxed out my laptop memory and, with 1000 time steps resolving the 5s of Vortex Dome behaviour, took overnight to solve. The Kolmogarov scale (length scale at which the turbulent energy is dissipated due to viscous effects) for this model is ~100 times smaller than the mesh size used. So this model really really isn’t a DNS. Can it be considered an LES simulation? The mesh should be small enough to resolve the eddies down to some part of the inertial subrange of the turbulent energy cascade spectrum. Likely it does, but with no SGS as such to model the rest of the energy cascade (the Simcenter FLOEFD was modelled as Transient and Laminar), at most this simulation could be considered a type of ham-fisted monotonically integrated LES that relies on numerical diffusion as the SGS model. 3) Fat Fingers My wife got me one for Christmas and I love it! It’s so satisfying to play with and gives me a nice work distraction. Lilly, D.K. A proposed modification of the Germano subgrid-scale closure method. Phys. Fluids A-Fluid 1992, 4, 633–635. [ Google Scholar] [ CrossRef] Keep collections to yourself or inspire other shoppers! Keep in mind that anyone can view public collections - they may also appear in recommendations and other places. I have to admit to now having 6 of these in different colours…they are so beautifully fascinating. I have different colours at different times of the year next to my desk and they each have a unique ‘character’ from swirling clouds though a storm on Jupiter, through a Mediterranean whirl pool…all stimulate the imagination whilst being relaxing!

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The reason fluids are transparent is due to the interaction of the photons passing through them and their atomic (or molecular) electrons. Although the physics is quite fascinating, it is somewhat out of scope of this blog. Suffice to say that some electro-magnetic frequencies pass through a liquid with little absorption or scattering, others much less so. Lee, J.H.; Kim, Y.C.; Cheon, D.J.; Yoon, S.W. Wind pressure characteristics of elliptical retractable dome roofs. J. Asian Archit. Build. 2022, 21, 1561–1577. [ Google Scholar] [ CrossRef]Yakhot, V.S.; Orszag, S.A.; Thangam, S.; Gatski, T.B.; Speziale, C.G. Development of turbulence models for shear flows by a double expansion technique. Phys. Fluids A-Fluid 1992, 4, 1510. [ Google Scholar] [ CrossRef][ Green Version] When using CFD to simulate turbulent flows it is common to adopt a ‘Reynolds Averaged Navier-Stokes’ (RANS) approach. With RANS all the turbulent vortices are considered time-averaged by the equations that are solved. Think of it as the simulation equivalent of taking a long exposure time photo. Alternatively the turbulence can be simulated more explicitly by taking a Direct Numerical Simulation (DNS) approach. Here the computational mesh cells and time steps used are small enough to resolve all the eddies, down to the smallest scales. More like a high resolution camera with a very short time exposure taking multiple pictures over time. For reference, this is how the actual Vortex Dome behaves under these rotational conditions (apologies for the fat finger obscuring the view): Vortex Dome: 1s spin, 1s rest, 1s spin in other direction, 2s rest. X3 slo-mo Xenoo - Lead 3d Modeller. Modelled and textured the Environmental Armor, both the Death Squad armors, and the Mutant Cannibal. Also created the Disintegrator Canon, the Compact Gauss Rifle, and the VBR pistol. One way of visualising fluid flow is to introduce small particles into the fluid that themselves reflect and scatter light much more efficiently than the fluid. These particle laden fluids are called ‘Rheoscopic fluids’, derived from the Greek Rheo –‘flow’ and Skopeo –‘examine/inspect’. Rheoscopic History

Not bad. Qualitatively it’s a fair match, but there are some differences. The diffusion of momentum from the periphery to the almost stagnant central part of the dome is underpredicted slightly. You never learn anything from getting things right first time, so let’s finish off by considering ways in which the model might be improved. Reasons to be Cautious, 1 2 3 1) Newtonian or not?Kim, Y.C.; Yoon, S.W.; Cheon, D.J.; Song, J.Y. Characteristics of wind pressures on retractable dome roofs and external peak pressure coefficients for cladding design. J. Wind Eng. Ind. Aerod. 2019, 188, 294–307. [ Google Scholar] [ CrossRef] Smart Meter Protection** BRAZE WELDED Tensor Ring -6 Gauge- Sacred Cubit 144MHZ EMF Protection / Neutralizer / Heal Energy / Structure Water Rheoscopic fluid encapsulated in a high quality glass dome mounted on a stainless steel base. Colour interesting to readers, or important in the respective research area. The aim is to provide a snapshot of some of the

So, looks nice enough, but how does it compare to the real thing? Side by side comparison of the real and simulated vortex domes. X7 slo-mo We are all connected all the time, whether we realize it or not. A great example of how the systems, communities, and networks theories are being put into practice by a modern Conscious Leader is the Downtown Las Vegas Project. It is Tony Hsieh, the CEO of Zappos, and his team who are making an attempt to reshape the future of a major city by the interplay of business and community-building in which all the stakeholders win. Tony’s mindset is definitely avant-garde and in line with the 21 st.-century Conscious Leadership In Action philosophy. Tominaga, Y.; Stathopoulos, T. Numerical simulation of dispersion around an isolated cubic building: Model evaluation of RANS and LES. Build. Environ. 2010, 45, 2231–2239. [ Google Scholar] [ CrossRef][ Green Version] A horizontal plane plot, showing the transient evolution of the velocity vectors, is a good place to start to understand the overall flow behaviour: Velocity vectors on a horizontal plane ~1/3 of the way up from the bottom face. X5 slo-mo articles published under an open access Creative Common CC BY license, any part of the article may be reused withoutOnce you know your higher purpose, it cuts through a lot of the old beliefs, dissatisfaction, and limitations. Your higher purpose will give you focus and energy to make a difference in the world through genuine collaboration and service for the greater good. 5. Live your values