CFD Helps Design Marine Vessels to Withstand Extreme Waves

Most of Brazil’s offshore resources are in deep waters so Petrobras has fostered substantial expertise to develop these fields. One area of importance is the design of marine vessels to withstand the extreme waves. While the discovery of 50 billion barrels of oil in recent decades has been a boon to Brazil’s economic outlook, the location of the oil has produced challenging engineering problems. Lying hundreds of kilometers offshore under up to 3,000 meters of seawater, 2,000 meters of rock and 2,000 meters of salt, the oil reserves are some of the most difficult to access on Earth. Engineers are systematically using best design practices and computational fluid dynamics (CFD) to increase the safety of marine structures and vessels used to drill and produce oil from Santos Basin fields.

CFD simulation of an FPSO in extreme waves marine vesselsComputational fluid dynamics simulation of an FPSO in extreme waves.

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CFD Time Transformation Delivers Accurate Turbomachinery Unsteady Transient Flows Faster Than Conventional Methods

Unsteady methods are becoming increasingly important in turbomachinery design and optimization because they model transient flows and performance more realistically. Unfortunately, using time-accurate CFD simulations to understand these unsteady flows in compressor stages can be computationally expensive. In recent years, ANSYS has been working on methods for modelling the transient flows in turbomachinery stages that require as few as single-blade passages per row but with equivalent accuracy. As a result, engineers can drastically reduce computational time and memory resources by up to 10X. Continue reading

Digital Twin of a Motor and Pump System – Second Edition

About a year ago, my colleague, Eric Bantegnie, wrote a blog that described how we, along with our partners PTC, NI and HPE, had created a digital twin of a pump and one of its valves. We showcased this at PTC LiveWorx. I’m happy to announce that work continues with our partners on a new and expanded version of the digital twin of this pump and its valves to its motor and electric drive.

Why is this exciting and important? This enhanced digital twin demonstrates a multi-domain system including fluids, electromechanical, electromagnetics and thermal  aspects, coupled with a user friendly Human Machine Interface (HMI),  to solve a challenging problem that faces motor designers and operators — determining, monitoring and maintaining the optimal temperature at which to operate the motor and its components on a consistent basis. Why does this matter? Every 10 degree Celsius increase in operating temperature of the motor and components over their optimum temperatures decreases the life of the motor by half! Continue reading

Why Digitalization Needs Physics-Based Simulation

Digitalization, digital transformation, and digital twins have become key business initiatives at many companies. The goal of these initiatives ultimately is to accelerate revenue and profitability growth by speeding innovation, improving productivity, and increasing reliability across the enterprise. Industry leaders know that revenue and profitability both suffer when their product fails to meet design objectives, underperforms the competition or does not meet customer expectations. When your product fails, your customer is unhappy, your re-design costs will be higher than planned, your reputation may be damaged, or worse, you may go out of business.

Given the complexity of today’s products, how can companies be sure that they will deliver the most reliable and innovative products to the market? Moreover, how can they leverage their product superiority to deliver additional value to their customer and more profitability for their business? Continue reading

ANSYS HPC: On to a Million Cores!

ANSYS CFD is on the verge of a second renaissance in high-performance computing (HPC). The first, spanning more than a decade, has seen tremendous leaps in both the depth and breadth of HPC capabilities. Depth (or heights, rather) in the size of the scalable clusters — first 1000s, then 10K, and recently 100K core counts — and breadth of coverage across solvers, physics, post-processing, even file I/O, covered the gamut of high-performance simulations. The trend, in fact, is exponential, as evident in this chart, and spans many years of ANSYS Fluent software releases. While there are other impressive scientific scalability demonstrations, ANSYS Fluent set the standard for industrial HPC CFD simulations. Continue reading

Ideal Upfront Simulation Tool for Design Engineers

A few days ago someone asked me if ANSYS flagship products are appropriate for the “average” engineer, and more particularly design engineers doing upfront simulation. I believe the better question to ask is which ANSYS products are geared toward design engineers, and why.

More often than not, design engineers are quite familiar with 3-D modeling tools, which are the starting point of simulations in the product development process. But given their focus on product design, manufacturability, documentation, etc., they typically do not have time or prior experience required to learn how to use a fully featured simulation tool like ANSYS Mechanical or CFD. Continue reading

In-Flight Icing Simulation: 3-D CFD-Icing is Here to Stay

3-D computational fluid dynamics simulation of in-flight icing (3-D CFD-icing) has achieved considerable advances in the last decade , and many dynamic OEMs and second tier suppliers are using them to speed icing certification. Yet, others remain on the fence, using technologies from three decades ago.

inflight icing simulation

The different characteristics of ice, at different locations on an aircraft:
can that be done in 2-D?

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Overset Mesh and CFD Simulates a Clean Room Smoke Test

clean room environmentRecent innovations in ANSYS 18 overset mesh have made it possible to use computational fluid dynamics simulations to model the smoke tests that provide useful guidance in designing clean rooms.

Ensuring Clean Rooms are Actually Clean

In the healthcare and electronics industries, process contamination is a primary concern. They manufacture these sensitive products in clean rooms where the concentration of airborne particles is controlled to specified limits. For example, a Class 100 clean room keeps particles of 0.5 microns or larger to less than 100 per cubic foot of air. Even in these controlled environments, particles are constantly being created and can settle on and contaminate surfaces and products.   Continue reading

NVIDIA Quadro GP100 Delivers Superior Performance for Transient Electromagnetic Simulation

Nvidia Quadro GP100NVIDIA recently announced its ultra high-end Quadro GP100 graphics card in February. Comparing to previous generations of Quadro cards, the new card runs much faster and is more power efficient. The new GP100 GPU has 3,584 CUDA cores, which deliver 10.6 and 5.3 teraflops floating point performances for single- and double-precision, respectively.

The GPU is also equipped with 16 GB HBM2 (the 2nd generation high-bandwidth memory) which allows data to be transferred at a lightning fast speed of 720 GB/sec. Both factors enhance the performance for running the most demanding transient electromagnetic simulation.

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ANSYS 18 Innovations for Electronics Cooling

electronics cooling of mobile devicesAs digital electronic devices continue to shrink and put greater functionality within consumer and enterprise products, thermal management continues to grow as the bottle neck for defining next generation architectures. Significant challenges exist today because the heat being generated continues to rise while the thermal envelope remains constant for silicon devices.

While some switching power converters have moved to III-V semiconductor materials such as GaN, the overall system still contains many silicon semiconductor devices that must meet traditional thermal envelopes. The removal of this heat has become a critical aspect of the design process, often being a very significant driver of what can be delivered within an electronic product. Continue reading