Dorsoventral undulation, a propulsion technique widely employed by aquatic mammals, plays a significant role in their swimming abilities. Among these skilled swimmers, dolphins are particularly renowned for their high-efficiency cruising capabilities. In fact, the common dolphin (Delphinus delphis) can reach speed of up to 37mph.⛵️🚤🐠🐳
@cfdanalysis.ir

#starccm #cfd #summerholiday
#siemens #bioinspiration
#fluiddynamics

Embrace the Heat with Enhanced Design Confidence!
In the spirit of the sunny season, we bring you an exclusive revival of our most favorable blog posts. When it comes to creating products, we understand that striking a balance between safety and innovation is paramount. That's why we're excited to highlight a solution that eliminates uncertainties, allowing you to unleash your creativity while ensuring optimal safety standards.

@cfdanalysis.ir

#marine #starccm #blogsummerspecial

#Siemens Simcenter STAR-CCM+.
🌊
Water Pump Design
Multiphase simulation to get insight into cavitation behavior of a water pump!

@cfdanalysis.ir


#CAE #CFD #Simulation

⁠🚀🛬 Discover how CFD
has revolutionised the aerospace industry by enabling accurate simulation of landing gear systems. ✈️ Our advanced software empowers engineers to optimise design, enhance safety, and reduce operational costs. The landing gear of an aircraft plays a pivotal role in ensuring safe and efficient landings. Designing and analysing landing gear systems can be a complex task, as they undergo significant stress and loads during operations. This is where CFD emerges as a game-changer! With its advanced simulation capabilitiesn and user-friendly interface, it empowers engineers to accurately predict the aerodynamic behaviour of landing gear systems. Through the utilisation of CFD, we have successfully simulated various landing scenarios, including normal landings, crosswind landings, and emergencies. The software allows us to assess the impact of crucial factors such as aircraft speed, angle of attack, and wind conditions on the performance and stability of landing gear. It allows us to optimise the design of landing gear systems, achieving an ideal balance between strength, reliability, weight, and drag. As a result, this significantly enhances fuel efficiency and leads to reduced operational costs for airlines. CFD empowers us to identify potential issues and challenges in landing gear performance at the early stages of the design process. By gaining insights into aerodynamic forces, pressure distribution, and flow patterns around the landing gear, we can make informed design modifications and enhancements, ensuring the utmost safety for aircraft operations.✈️💡

@cfdanalysis.ir

#CFD #AerospaceInnovation #LandingGearSimulation #ComputationalFluidDynamics #AircraftDesign

Tunnel Pressure Signature 🚅
When designing train, compliance with the Locomotives and Passengers Technical Specification for Interoperability (Loc&Pas TSI) is crucial. This standard gives some criteria concerning the pressure signal generated when a train enters a tunnel. CFD simulations are used to analyze and optimize the external design, considering the complex interactions between the train and the surrounding air during the tunnel entry. Overset mesh is a powerful tool available in Star-CCM+ to model such unsteady rigid boy motion.
@cfdanalysis.ir
#cfd #train #starccm+ #overset

Battery Thermal CFD 🔋

This CFD simulation shows the differences between an assembly of continuously
tabbed prismatic cells and discretely tabbed cells in battery simulation.

Which effects are taken into account?
⚡️ Battery charging/discharging, modeling the State of Charge in different loadcycles. The discrete cells show significant differences due to their better spacial resolution.

🔥 Temperature in the whole setup AND single cells in great fidelity.

🌯 Unrolled view of a Single Cell Electrical Current Density! That really flashed me when I saw it first!

Do you see the value of these discretizations in Simcenter STAR-CCM+? Let me know where you will use this!
@cfdanalysis.ir

#simcenter #battery #simulation #cfd #innovation

⁠#Siemens Simcenter SPH Flow Software
The vehicle aerodynamics strongly influence water and dirt management which is a key consideration to keep the vehicle clean and ensure the best visibility for the driver. Use Simcenter SPH Flow meshless method to couple an aero-external simulation to correctly capture the jets and splashes from the water/mud puddles on the vehicle.



>Optimize cameras and sensors positions to ensure good visibility for the driver

>Optimize your vehicle design to ensure effective dirt management.

@cfdanalysis.ir

#cae #cfd #simulation #engineering

⁠CFD of an electric motor OIL cooled 🛢

If you don't rely on oil to power your car, why not use it to cool the motor? 🤷‍♂️ This CFD simulation performed in Simcenter STAR-CCM+ uses several features to model the complexity of the oil cooling:💧 Lagrangian Multiphase and Fluid Film models for smaller details,
🌊Volume of Fluid model for the larger, continuous liquid areas.
🤝combining these allows users to adjust the mesh resolution and accuracy to
whatever they can afford.
This approach uses Fluid Film model just like a "sub-grid" model for VOF, so the simulation can use a relative coarse mesh.
What is your application for liquid spray? Let me know!

@cfdanalysis.ir

#simulation #electricmotor #vof #simcenter #innovation

Simulation of oil pouring into water - performed by #simcenter STAR-CCM+.



@cfdanalysis.ir

#siemens #starccm #cfd #multiphase #oil #water

This video showcases a CFD simulation of porpoising of an F1
car.

@cfdanalysis.ir

#CFD #aerodynamics #simulation

Boat CFD for occupant safet🌊

To be honest: I just found this visualization in our internal repository and I am still wondering what we can see here. For sure, I know the simulation on the left.

💧It is a Volume of Fluid - Multiphase simulation.

🕸 sadly, you can see an interface between the
Overset Mesh region and the surrounding. Even though this is an extremely efficient approach to speed up simulation, it looks kind of unrealistic at the interface.
🚤 the use case is also clear - boat speed trial with waves.

What can we learn from this?

🙅‍♀️ these waves are too high for the speed. The boat needs dampening. The passengers might get hurt! What are your conclusions? Let me know!

@cfdanalysis.ir

#simcenter #starccm #vof #simulation #marinecfd

Let's get this show on the road! 🚚Starting with this aerodynamic simulation of a Volvo truck with CFD simulation
results.

@cfdanalysis.ir

#starccm #cfd #summerholiday #siemens

#Siemens Simcenter STAR-CCM+ & HEEDS
Drone maker uses Simcenter STAR-CCM+ and HEEDS to deliver the world’s first true ducted fan VTOL UAV.

A comprehensive digital twin to design for high hover thrust while reducing drag for cruise. Inquire to learn more about this customer success story.

@cfdanalysis.ir

#cae #cfd #engineering #aerospace

*A pressure-swirl atomizer is a
type of atomizer used in applications such as fuel injection in combustion
systems, spray coating, and aerosol generation. It's designed to produce a fine
spray of liquid by utilizing the energy of a high-pressure liquid stream and the forces generated by its swirling motion.
**In this video, a coupled volume of fluid and wall-modeled large eddy simulation (VOF-LES) approach was used to model both the internal and external flow of a pressure swirl atomizer in a single simulation. The presence of an air core in the spin chamber causes the liquid to leave the injector as a thin film. Instabilities cause disturbances to grow on this film, leading to its disintegration into ligaments, which either continue to break up or are drawn into spherical droplets by surface tension, completing the primary atomization process. The High-Resolution Interface Capturing scheme is employed in conjunction with Adaptive Mesh Refinement to efficiently resolve the liquid-gas interface. This strategy allows the air core, thin film, and ligament/droplet formation to be captured while maintaining a significantly lower cell count than a fixed grid would require.
@cfdanalysis.ir
#simcenter#combustion#simulation#hydrogen#cfd #atomizer #spray

⁠#Siemens Simcenter STAR-CCM+
🌪 🌧

Sensors provide a stream of information that is used by Advanced
Driver-Assistance Systems (ADAS) to make driving decisions. As users become
more dependent on these systems it is imperative that vehicles are not rendered
“blind and deaf” by sensor soiling through rainwater, a splatter of mud or even
a carefully aimed bird dropping.

Simcenter STAR-CCM+ enables cars to optimize their aerodynamic designs to
reduce sensor contamination for safer ADAS systems.



Shown here is the shape optimization of the fairing around side view mirror
camera for reduced soiling. The final shot shows the difference in film
thickness between baseline and optimized design.

@cfdanalysis.ir

#cae #cfd #simulation #adas

NACA 0012 Aerodynamics Animation. Angle of Attack 20
degrees. URANS SST, Slowed down about 24x.

@cfdanalysis.ir

#foil #windenergy #CFD #fluiddynamics#wake

CFD of an electric motor ⚡

To design an electric motor, CFD simulations are not enough. But still, the Simcenter portfolio got your back. Simcenter Motor-solve and Simcenter STAR-CCM+ can couple design explorations to optimize your electric motor design.
🧲 simulate the electromagnetic effects of hundreds of designs. 2D, 3D, as you wish.
🔥 Take a closer look at your losses and how you treat them: counter waste heat with efficient cooling.

There are just so many features to speed up and simplify these simulations, e.g., 2D to 3D mapping: in a blink of an eye, you simulate your 2D design and then just map that onto a volume. This way you get an initial solution for advanced 3D simulations - or just a quick estimate for your conjugate heat transfer simulation.
@cfdanalysis.ir
#electriccar #emag #cfd #simulation #simcenter

⁠Simulation of a Lawn Mowing Robot - and why you need to dampen your grass! 🚜
This simulation is NOT a CFD. It is a mesh-free DEM, Discrete Element Method simulation, performed in Simcenter STAR-CCM+. It simulates mechanical behaviour of discrete particles, interacting with the solid walls - of the mower, the floor and the blades.
🥬 The grass is modeled with a Flexible Fiber model - several capsule particles attached to each other.
🥒 These Flexible Fibers use a breaking mechanic model to split up on a certain force applied.
🕸 there is NO mesh. Thus, the air is not simulated, but the particle simulation gets sped up by some orders of magnitude.
🌬 normally, grass does not "wobble" around. It is relatively flexible, but its air drag provides swaying from impacts. As the air is not modeled, there is no dampening.
🥦 to prohibit this unphysical behaviour, a dampening force can be applied, still using fast meshless simulations.
But still, if you want to take the air into account, you can ad one-way coupling, so the air influences the particles, or even two-way coupling, so the air is also affected by the particles!
What do you think, does our agricultural machinery benefit from meshless simulations or do we always need to take particle drag into account? 🤔
@cfdanalysis.ir
#simcenter #simulation #discreteelement #agriculture #lawnmower