This simulation of an electric motor is done in Simcenter STAR-CCM+ and shows some important features:
🧲 electromagnetic simulations, field data first in two dimensions, then mapped to 3D. This GREATLY reduces computational effort.
⚙ motion.
🔥 heat.
💧 flow through the cooling system.

With ease you can optimize electric motors, limiting peak temperatures, ensuring maximum torque and continuous power!
@cfdanalysis.ir
#simulation #simcenter #innovation #starccm #EV #emag

What kind of CFD is this? 🤔
Here we have an application of a transient liquid flow through a trifold membrane. A complex external pressure is applied to the fluid - and the mechanically modeled membrane reacts to that.

Highlights:

♥ Fluid Structure Interaction (FSI)

🖤Overset Mesh

❤ Mechanical Stress



@cfdanalysis.ir

#simulation #simcenter #innovation #cfd

When you ask a fluid mechanic engineer
"how we make babies", the answer can quickly become technical.

@cfdanalysis.ir
#siemens #cfd #baby #starccm #simcenter

⁠'Adding a turbulator will help improve droplet evaporation' - or so I thought. Perhaps that's obvious to some engineering wizards out there, but it wasn't to me. It turns out that the heavier droplets move towards the outside of the helix, coalesce upon impact and actually reduce the overall heat transfer. You can actually see tiny whisps of heated particles as they leave the turbulator. Luckily, Simulations allows you to add layers of physics to explore complex emergent phenomenon instead of relying on engineering intuition. Combined with an impossibly fast NVIDIA GPU-native solver, these simulations can be completed in minutes allowing engineers to rapidly understand the design space. LES turbulence, heat transfer, DEM particles, particle breakup and coalescence, scalar transport, reactions, heat transfer, moving bodies and did I mention heat transfer? And it continues to increase.


@cfdanalysis.ir

#engineering #cfd # #engineers #computationalfluiddynamics #nvidia #hpc #gpucomputing #turbulator #nurbulator

Rocket engine testing Rocket engines enable the generation of thrust, which propels rockets through both atmospheric and space environments. The engine operates by combining fuel and an oxidizer (a source of oxygen) within a combustion chamber. Through the combustion process, hot exhaust gases are produced. These gases are then directed through a nozzle, where the flow is accelerated, resulting in the creation of thrust. In the case of rockets, the working fluid responsible for generating thrust is the hot exhaust produced during the combustion process. This video shows the firing of the SpaceX Raptor engine, which is a cryogenic rocket engine powered by a combination of liquid methane and liquid oxygen. Towards the end of the video, there is a CFD simulation illustrating the plume generated by the engine and the temperatures it can reach during operation.


@cfdanalysis.ir



#engineering #engine #CFD #rocket #testing #space

the performance of a KCS hull equipped with our bio-inspired propulsor. A first validation study showed less than 5% error on
all crucial parameters (e.g. resistance, sinkage, trim, etc.) compared to the Tokyo 2005 and Gothenburg 2010 workshops. Below, the wave pattern of a full-scale model (Re=2.4E9) and the wake formation of the integrated fin (Q-criterion at Q=1.0). In this joint project, the focus is on the evaluation of the stern and bow vertical dynamics at the ship’s designated cruising speed (U=24 kn, Fr=0.26) under calm water conditions. Furthermore, we analyze the potential of added resistance and overall wake alterations caused by the fin motion compared to the ship equipped with a standard B-series propeller. This is especially interesting in large vessel applications, motivating us to explore areas such as wave harvesting, swarm tactics, active kinematic adaptation in real-time, etc.
@cfdanalysis.ir

#CFD #KCS
#Resistance #wave #ship_designing

Siemens Simcenter synergies!
Fluid Structure interaction of a planing hull in waves using Simcenter STAR-CCM+ and Simcenter 3D. Simcenter STAR-CCM+ is used to model the dynamic behavior of the vessel in waves. The impact of the waves result in high pressure forces. These pressure forces are applied on the structural model to investigate the structural safety of the vessel.

@cfdanalysis.ir
#cfd #marine #simulation #cae #siemens

✈️ Aerospace aerodynamics CFD will soon become faster than ever. With the coupled solver becoming GPU-native
in Simcenter STAR-CCM+ 2306 you can run faster, more cost and energy-efficient CFD for aerospace and many more applications. Fasten your seat belts because you are soon ready to take off.

@cfdanalysis.ir


#Simcenter #CFD #AerospaceEngineering

Simulation and experiment of pressure-swirl injector at 1 bar pressure difference.
The simulation was able to correctly predict the shape of the exit spray compared to the experimental work.
This type of spray is called onion-shaped spray, which is created when the pressure is very low.
#CFD
The simulation was also carried out using a volume of fluid model considering two-dimensional axisymmetric swirl conditions.
#EXPERIMENT
Fast imaging was employed based on the backlighting technique to experimentally investigate the behavior of the exit liquid sheet.
High-speed PCO camera (to capture images using an exposure time of 9 μs and Nikon macro lens (100 mm focal length)).
@cfdanalysis.ir
#Pressure#swirl#atomizer #VOF #PCO camera #Backlighting

I love CFD! his propeller surface piercing simulation, showing the formation of water
drops, is just awesome. (Here the mesh is shown on the mid-plane and the iso-surface represents a
void-fraction of 0.5.)
@cfdanalysis.ir


#Marine_cfd #cfd #Propeller#ship_propeller

⁠🌬️ Wind Turbine Wakes 💨

When the wind encounters a wind turbine, it undergoes a complex interaction. As the blades rotate, they extract energy from the wind, causing it to slow down and change direction. This alteration in wind flow creates a wake region behind the turbine. The wake consists of two main components: the near-wake and the far-wake. The near-wake is closer to the turbine and is characterized by turbulent and chaotic airflow. This region experiences significant changes in wind speed and direction, which can affect the performance of downstream turbines in a wind
farm. 🌀
Meanwhile, the far-wake extends further downwind, and its impact is less pronounced. However, it can still lead to decreased power output for turbines positioned in its path. Understanding and managing wind turbine wakes is crucial for optimizing energy production in wind farms. 🌍💡
Researchers are constantly studying wake effects to improve wind farm designs
and minimize wake losses. By carefully positioning turbines, adjusting their spacing, and implementing advanced control strategies, we can mitigate the negative impact of wakes. This helps maximize the overall energy output of a wind farm and enhance its efficiency. ⚙️🔋
Wind turbine wakes represent a fascinating interplay between renewable energy generation and fluid dynamics.💨💪


@cfdanalysis.ir



#WindPower #WindTurbineWakes #windturbines #windenergy #CFD #fluiddynamics

Simulation of an entire ship hull.

Slamming is a term that is often used in a maritime context to describe the sudden impact of the ship hull on a water surface.

@cfdanalysis.ir

#mechanical #mechanicalengineering #aerospace #automotive #cfd

⁠Siemens Simcenter STAR-CCM+!

Simulation of a mixer used in battery cell preproduction. 2% dense liquid is poured into 98% less dense. This simulation of a mixer was used to optimize
mixing process of battery electrode slurry. A dense black liquid is poured into a clear liquid, stirred thoroughly and released after reaching an equilibrium.

Simcenter STAR-CCM+ enables process engineers to ensure constant substance distribution in minimum mixing time, optimizing the process before setting them up. The visualisation shows the volume fraction of the dense substance in the whole solution. The final state would be all liquid yellow, representing a constant volume fraction of 2% dense liquid.

Eulerian Multiphase flow, VoF, Adaptive Mesh Refinement.

@cfdanalysis.ir


#cae #cfd #simulation #batteries #siemens

Check out this extended animation showing the flow of 5
micron sized evaporating droplets flowing through the nasal airways during a
respiration cycle. The air flow information is calculated using cfd

@cfdanalysis.ir

#simulation #particles
#simulationsoftware #health #healthcare #patientcare #drugdelivery #inhaler #masteringparticles

⁠CFD simulation of me, casually drifting in my business jet on my way back home from Paris Air Show🛫😂
What is this simulation about?
🌪 it is a Wall-Modelled Large Eddy Simulation (WLMES), one of the greatest turbulence fidelities commercial solvers like Simcenter STAR-CCM+ offer.

🕸 130 million cells, polyhedral mesh.

👬
coupled flow solver...

🖥 ... running on GPUs. It took 24x NVIDIA A100 6 hours runtime to simulate

⏲ ... 1s physical time.

✈️ Flight parameters are on the edge: I am no aircraft expert or hobby pilot, but this jet is literally drifting through the air,
partly stalling, traveling a bit sideways.
🤷‍♂️
If you know the correct term for this vague description please let me know!

Do you think it is appropriate to display it like that? Did you get the impression that this jet is burning and falling from the sky? 😱
The visualization shows turbulence, meaning an isosurface Q-Criterion = 500 /s colored in Mach.

🌈
The colorbar is even matching the background colors, I call it MrBlueSky 😁

@cfdanalysis.ir

#jetset #simcenter #simulation #PAS23 #cfd #gpu

modelling-anchored-boat-contacts-in-rough-seas



@cfdanalysis.ir

#jetset
#simcenter
#simulation
#PAS23
#cfd
#gpu

With #Simcenter STAR-CCM+ you can analyze a complex combustion system, in this example a pressurized annular combustion chamber, and add hydrogen to the fuel to reduce the CO2 emissions generated. This system can be analyzed using a high-fidelity LES model combined with the Flamelet Generated Manifold combustion model to accurately predict thermoacoustic behavior. And even better, all this can be done natively on GPUs to drastically accelerate the rendering time.
@cfdanalysis.ir

#starccm #cfd #combustion #burner #siemens

In this study, we conducted venting experiments in a 1m3 silo to validate our model based on CFD. Results are in excellent agreement with experiments, marking a significant milestone in establishing an effective modeling strategy for simulating dust explosions and determining optimal vent sizes to ensure industrial safety.



@cfdanalysis.ir


#CFD #dustexplosions #biomass #energy

⁠#Siemens Simcenter STAR-CCM+
✈️
User-defined Lagrangian break-up modeling will give you more flexibility to model complex break-up scenarios like in this afterburner of a jet engine Useful in many applications, for others, classical secondary breakup models (like SSD, TAB, Reitz-Diwakar, KHRT) may not always provide acceptable accuracy for the size distribution of droplets. While a high-fidelity hybrid multiphase approach offers an accurate alternative it is not always feasible due to simulation effort constraints. In Simcenter STAR-CCM+ 2210, we therefore introduce the user-defined breakup
model for Lagrangian multiphase to allow you to implement any existing breakup model in literature with maximum flexibility. The implemented solution allows you to specify an arbitrary number of the breakup outcomes and then input the breakup map using field function or table input method. The breakup map specifies the conditions for each breakup outcome. For simulating combustors in gas turbines or breakup in sprays generated by pre-filming air blast atomizers used in aero-engines, it is difficult to get sufficiently accurate predictions with standard break-up models. The new user coding option offers you full flexibility to implement any application-tailored model like for example the Madabhushi breakup for fuel jets in cross-flow.


@cfdanalysis.ir



#CFD
#dustexplosions
#biomass
#energy

#cae #simulation #cfd #engineering