Entry of a meteoroid into the Earth’s atmosphere Asteroids have recently hit the headlines, as NASA has announced that it wishes to relaunch its exploitation program of “16 Psyche”, an asteroid valued at 10 000 quadrillion euros by Forbes magazine. As for meteoroids, they are actually fragments of asteroids that orbit the sun and they are much smaller. Many of them are formed due to the collision of asteroids (diameter of one meter to hundreds of kilometers) which orbit the sun in a region called the asteroids belt, located between Mars and Jupiter. Those events can put the meteoroids on a collision trajectory with a planet or moon.
When a meteoroid enters the Earth’s atmosphere, generally at a speed higher than 20 km/s (72,000 km/h), it heats up with the aerodynamic resistance, creating a streak of light from the glowing object and the particles in its wake. This phenomenon is commonly called a meteor or “shooting star”. Most meteoroids that enter Earth’s atmosphere disintegrate before they reach the ground. The pieces that strike Earth's surface are called meteorites.
Numerical simulation is a great tool to study complex fluid dynamics phenomena such as the hypersonic entry of a meteoroid into Earth’s atmosphere.

@cfdanalysis.ir
@siemenssoftwar
#CFD #meteoroid #meteorite #hypersonic #science #aerodynamics #AI

An excellent 'Practical Engineering' video about spillway gates this week got me thinking about some of the hydraulic conditions that can exist around them. The CFD model here shows some of the submerged flow patterns behind a radial gate with a very small opening - the flow, though fairly quiescent, creates a potentially dangerous re-circulation zone which can drag objects from the surface down underneath. You can see this a lot more clearly in the second part of the video, where downstream particles are getting sucked towards the gate and eventually pushed downward into the rotating gyre. Water engineers out there: what other sorts of scenarios do you normally consider when designing gated structures?

@cfdanalysis.ir
@siemenssoftwar
#spillway #cfd #engineering

Airbus has presented its new propulsion system based on fuel cells for the #ZEROe demonstrators. #fuelcells are promising, because do not generate any CO2, NOx or particulate matter, releasing only water vapor in the atmosphere. ZEROe system should be based on Proton Exchange Membrane (#PEM), the most promising solution for mobile applications. Its low operating temperature makes the #thermalmanagement system bulkier due to the small temperature difference available, but the technology is already quite mature and lighter compared to Solid-Oxides Fuel Cells (#SOFC) for stationary applications.
Many funding schemes are aiming at improving fuel cells, not only Clean Aviation with its focus on demonstrators, but also Clean Hydrogen Partnership, which in 2022 dedicated significant resources to improve the basic technology specifically for #aviation.
Hydrogen-powered fuel cells are one of the two solutions proposed by Airbus for its ZEROe demonstrators, in addition to #hydrogen #combustion in a #gasturbine (already under collaboration with CFM International (CFM), the joint venture between GE Aerospace and Safran). The first flight is expected within this decade in order to achieve the world’s first zero-emission commercial aircraft by 2035.


@cfdanalysis.ir
@siemenssoftwa
#propulsion #aerospace #research #airbus

simulation process for a Gearbox? This solution provides outputs including splash patter, velocity and pressure field, resistive torque, churning and windage loses and much more.

@cfdanalysis.ir
@siemenssoftwa


#simulation #automation #automotive

A CFD analysis, a description of the working principles of the Dynamic Induction technique to promote a faster wake recovery and proposes a novel strategy to improve the vortex roll-up.


@cfdanalysis.ir
@siemenssoftwa
#aerospace

🌊 226 Million particles simulated with @DualSPHysics (SPH on GPU)🌊

The interaction of a large wave with an oil rig is simulated using the MultiGPU implementation of DualSPHysics.
@cfdanalysis.ir
#engineeredmind #science #technology #engineering #mechanicalengineering #physics #mathematics #cfd #simulation

🌀 Kármán Vortex Street - 𝘈 𝘱𝘩𝘺𝘴𝘪𝘤𝘴-𝘤𝘰𝘯𝘴𝘵𝘳𝘢𝘪𝘯𝘦𝘥 𝘥𝘢𝘯𝘤𝘦 𝘪𝘮𝘱𝘳𝘰𝘷𝘪𝘴𝘢𝘵𝘪𝘰𝘯 🌀

Although engineers often consider fluid mechanics through the lens of mathematics, that’s far from the only way to understand fluid physics. Today’s video is an alternative interpretation of a classic flow — 𝘵𝘩𝘦 𝘧𝘭𝘰𝘸 𝘢𝘳𝘰𝘶𝘯𝘥 𝘢 𝘤𝘺𝘭𝘪𝘯𝘥𝘦𝘳 — created in a collaboration between dancers and engineers.
The result is what they call a “𝗽𝗵𝘆𝘀𝗶𝗰𝘀-𝗰𝗼𝗻𝘀𝘁𝗿𝗮𝗶𝗻𝗲𝗱 𝗱𝗮𝗻𝗰𝗲 𝗶𝗺𝗽𝗿𝗼𝘃𝗶𝘀𝗮𝘁𝗶𝗼𝗻” that shows how the flow changes as its speed increases.

@cfdanalysis.ir


#engineeredmind
#science #technology #engineering #mechanicalengineering #physics #mathematics #fluidflow #cfd #fluidmechanics #turbulence #vortex

Check out this fully coupled simulation of a fluidized bed #granulation process! A liquid-solid mixture is sprayed into the granulator from a nozzle, see droplets in magenta. The liquid and solid species are deposited onto the carrier particles and, partially, onto the #granulator walls. The product quality measures the coating/granulation level of the carrier particles. Finally, the temperature field changes dynamically due to the #heating from the #fluidization air and the #cooling due to the liquid #evaporation.

@cfdanalysis.ir

#aspherix #cfdemcoupling #simulation #cfddem #particles #fluidizedbed #caesoftware #heattransfer #multiphase #phasetransition #phasechange #processengineering #spray #spraycoating #pharmaceuticalmanifacturing #pharmaceuticals #masteringparticles

🏀 The Magnus Effect 🏀

The Magnus Effect is a physical phenomenon whereby a spinning object creates a low-pressure zone on one side and a high-pressure zone on the other. This pressure difference causes a force that pushes the object in the direction of the low-pressure zone.

The Magnus Effect is named after the German physicist Gustav Magnus, who was the first person to investigate the phenomenon. The Magnus Effect explains the curving motion of a soccer ball when it is struck with a spin, as well as the unpredictable motion of a knuckleball in baseball.
@cfdanalysis.ir

#engineeredmind #science #technology #engineering #mechanicalengineering #physics #mathematics

I remind everyone that NASA has a helicopter on Mars.

🚁 Ingenuity completed its 37th flight in December, carried by Perseverance its success has changed the way we will approach exploration on Mars in the future.
@cfdanalysis.ir


#simcenter #ingenuity #nasa #floefd #marsexploration

Simulation Rising process with rudder steering and propeller rotating


@cfdanalysis.ir


#simcenter #UUV#AUV#diving_submarine #Rising_submarine

⁠Researchers at the University of California, Berkeley, first unveiled Salto’s high-flying capabilities in 2016. Now, they’ve equipped the robot with a slew of new skills, giving it the ability to bounce in place like a pogo stick and jump through obstacle courses like an agility dog. Salto can even take short jaunts around campus, powered by a radio controller.

The researchers hope Salto will propel the development of small, nimble robots that could leap through rubble to aid in search-and-rescue missions.

“Small robots are really great for a lot of things, like running around in places where larger robots or humans can’t fit. For example, in a disaster scenario, where people might be trapped under rubble, robots might be really useful at finding the people in a way that is not dangerous to rescuers and might even be faster than rescuers could have done unaided,” said UC Berkeley robotics graduate student Justin Yim. “We wanted Salto to not only be small, but also able to jump really high and really quickly so that it could navigate these difficult places.”

@cfdanalysis.ir

#simcenter #robotic# jumping_robots#Salto #Rising

⁠Multi-disciplinarity has become a buzzword. How can it be turned into a powerful operative deployment for a product design engineer? Is it possible to deploy a cross-discipline predictive tool for designers, without stacking layers of complexity?

🧠 Deep Learning empowers all engineers in your organization with an AI-based tool that can digest all your engineering data: CAD, Simulation and physical testing. Most importantly, layering of information will create more accuracy without additional efforts for the end users: one predictive tool for Production is delivered to the designers team with the convergence of Learning and Data.

Two game-changing features make data convergence possible:

📊 Transfer Learning allows the recycling of CAD and CAE data over different projects, increasing the predictive power of AI and decreasing the need for new data.
📊 Data Fusion assimilates data from very different sources: simulation, high-fidelity simulation and physical testing.

Physical testing is considered as providing the most reliable data for engineers; however, it is also considered as expensive and is not perfectly integrated with simulations. With an AI-powered tool, even sparse physical data can be leveraged; resulting is high-fidelity predictions.

@cfdanalysis.ir


#engineeringdesign #artificialintelligence #engineeringintelligence #deeplearningai

Self-Balancing Hexapod Robot. Android-based DIY Spider Robot.


Make Your Pet is using the phone's gravity sensor to keep the body level. Having an easy access to all the phone's sensors is another benefit of using smart phones in hobby robotics.

@cfdanalysis.ir

#simcenter
#robotic# jumping_robots#Salto #Rising

Structural Analysis Using Digital Augmentation

Bridging the gap between theory and the real world is a big challenge in STEM education because conceptualising phenomena such as forces, electricity and energy is very difficult due to their inherent invisibility.

The augmentation technology makes physical objects come to life with colour, meaning and insight.

@cfdanalysis.ir

#engineering #technology #structuralanalysis #computervision #visualization

In this simulation, the roughness elements are explicitly resolved from a meshing perspective, but there are other ways of doing this, using surface roughness or even porous media approaches in CFD. I am thinking of spending a bit of time investigating this more thoroughly, and was wondering if anyone out there has some use cases / or even case studies they might be able to share with me?
@cfdanalysis.ir

#riprap #waterinfrastructure #cfd

The world's first full-scale, electric amphibious seaplane will fly passengers from the Trondheim fjord to Bergen's Flesland Airport within an hour. Innovations like this are made possible thanks to rounds of testing in the towing tank at SINTEF Ocean in Trondheim ✈️🚤

@cfdanalysis.ir

#marine #ship_design #model_Test

Peeling in electroadhesion soft grippers


Electroadhesion endows robots with super-human abilities: mechanical geckoes that climb vertical walls and soft grippers that grasp the most delicate objects. Based on electrostatics, the adhesion forces are turned on and off by an electrical signal, promising extremely fast operation, from silent fully solid-state devices. Practical applications of electroadhesion have however been limited to date by two main challenges: (1) the adhesion forces can vary over 1000x by simply changing the angle between the electroadhesive tape and the object, (2) release is often slow due to residual adhesion when voltage is removed.


@cfdanalysis.ir

#simcenter
#robotic#
jumping_robots#Salto #Rising

In this simulation, in which air interference is observed due to the jet hitting the free surface vertically, the interference of air bubbles from the free surface can be observed when the jet hits the free surface, and the entrainment of air bubbles in the fluid with the effect of flow and density difference can be examined.


@cfdanalysis.ir\
#cfd #computationalfluiddynamics #flow3d #simulation #simulationsoftware #simulations #engineering #surfacemodeling #technology #fluiddynamics