Hall of Fame

Best in Show 2018: Commercial

Delphi Technologies

Lucy Electric

PerasoTechnology

Delphi Technologies

Gasoline direct injection engine exhaust emissions strongly rely on the fuel injector design and spray performance. A major challenge is to avoid injector tip coking, which causes high emissions and impacts engine performance over time. Using ANSYS CFD for high resolution large-eddy-simulation in combination with the volume of fluid method for interface tracking, engineers were able to better understand nozzle flow and the spray formation process, leading to an improved nozzle design.

Lucy Electric

Turning off a high electric current, especially at high voltages, requires special arc extinguishing devices called splitter plates, because the current makes the insulating gas between the separating contacts conductive, resulting in an electric arc. Using ANSYS Mechanical and electromagnetic simulations to simulate the motion of the arc, engineers determined the behavior of the arc chute and optimized the splitter plate arrangement.

Peraso Technology

Conflicting requirements for high power transmitters and small, compact enclosures for consumer electronics products are creating thermal challenges. Engineers used ANSYS SIwave to balance the thermal conductivity between the top and bottom sides of the PCB, and ANSYS Icepak for thermal analysis and optimization. They determined the optimal enclosure structure and openings for maximum heat flow, reducing the system temperature by 20 percent.

 

Best in Show 2018: Academic

FTGM

Lucerne University of Applied Sciences and Arts

University of Florence

FTGM

In clinical practice is difficult to follow the growth of an aneurysm in an aorta. Using ANSYS CFD and RBF Morph, researchers created a virtual statistical patient to analyze the blood flow and blood pressure alterations during the transition of the aorta from a healthy to an aneurysmatic state. Using patient-specific data in the future could lead to better diagnoses of aneurysms and improved clinical outcomes.

Lucerne University of Applied Sciences and Arts

Skis are quasi-symmetrical multilayer composites bonded by an adhesive through heat pressing. The adhesive curing process gives the ski its shape and corresponding stiffness and thus determines the physical characteristics and the quality of a ski. Researchers used ANSYS Mechanical to perform thermal-transient simulations of the heat press process to determine the effects of heat and pressure on the final shape and performance of the ski.

University of Florence

Lean burn technology is a promising solution for the next generation of low-emission aeroengine combustors. Limiting NOx emissions demands a careful design of the injection system, where the control of fuel breakup and mixing process is of paramount importance. ANSYS CFD simulations accurately described the fuel breakup process, and reproduced the swirling flow and its interaction with the combustor liners, improving prediction of heat loads and metal temperature.

 

Best in Show 2018: Startup

Volute, Inc.

 

 

Volute, Inc.

Conformable hydrogen tanks are composite pressure vessels with a maximum safe operating temperature of 85 C, beyond which they might catastrophically rupture. Hence, thermal relief end valves that automatically vent the contents when the temperature exceeds 110 C — which occurs rapidly during a fire — are required. Engineers created a virtual version of a pressurized tank using ANSYS Mechanical and used it to determine that the temperature limit is reached in 8 minutes, so a timed release could be made of the pressurized gas.

 

 

 

Hall of Fame Finalists 2018

Arcelik AS

Dartmouth College

FAA

Fraunhofer IZM

Arcelik A.S.

Reducing friction losses by optimizing lubrication is crucial to improving the performance of reciprocating hermetic compressors in refrigerators. ANSYS CFD was used in the transient simulation of reciprocating hermetic compressor lubrication. The result was a better understanding of the behavior of oil motion in a refrigerant environment and significantly reduced friction losses in an improved compressor design.

Dartmouth College

Measuring the effects of the absorption of radio-frequency (RF) radiation produced by implanted medical devices on the tissues of patients is difficult and time-consuming to do in vivo. Researchers used ANSYS HFSS to parametrically simulate an implantable resonator — a wire loop with an extended wire handle — in the body of a laboratory rat. The simulation enabled them to determine the specific absorption rate of RF energy in the tissue surrounding the resonator.

The Boeing Company and FAA

The devastating explosion and crash of a Boeing 747-100 during TWA Flight 800 near East Moriches, New York, on July 17, 1996, caused the deaths of 230 people. Using ANSYS finite-element analysis (FEA), Boeing and FAA investigators reconstructed the airplane from its fragments and simulated numerous scenarios to determine what took place in the last milliseconds before the catastrophic event. The simulation results pinpointed the location of the faulty ignition of the fuel/air mixture in the airplane center tank.

Fraunhofer IZM

Wire bonds connect the topside of integrated chips with the rest of the circuit. During operation, the chip repeatedly heats up and cools down. The wire expands and contracts at a different rate from the semiconductor, leading to stresses that can cause fatigue cracks and wire breakage. Using ANSYS Mechanical to analyze a cohesive zone model, researchers calculated the crack growth for each load cycle and predicted time to failure.

King Abdullah University of Science and Technology

LandiRenzo SpA 

Lappeenranta University of Technology

Lawrence Berkeley National Laboratory

King Abdullah University of Science and Technology

Spiral-wound membrane modules are used in membrane filtration processes for water treatment. Feed spacers are essential to keep membrane sheets apart and to generate feed unsteadiness/turbulence to enhance pure water recovery. Using ANSYS CFD, researchers performed simulations that provided a fundamental understanding of spacer design and hydrodynamics.

LandiRenzo SpA

In a dual fuel engine, diesel fuel must spark to ignite premixed compressed natural gas (CNG), so the two combustion modes must coexist. Engineers used ANSYS CFD to investigate the fluid dynamics of the engine to set the right quantity of CNG and diesel fuel, along with the correct injection timing of both fuels. They optimized the timing of the fuel injections, avoided an excessive temperature increase and determined the correct position of the CNG injectors on the intake manifold.

Lappeenranta University of Technology

Improving compressor and turbine performance in supercritical CO2 radial turbines is a major route to increasing the efficiency of the whole process. Combining ANSYS CFD transient simulations with external real gas property tables, researchers simulated the operation of the compressor and turbine near the critical point with high accuracy and good agreement with experimental measurements.

Lawrence Berkeley National Laboratory

The Advanced Light Source (ALS) is a specialized particle accelerator that generates bright beams of x-ray light for scientific research. Mirrors are used to deliver the beam to the sample under study, but vibrations of the mirrors create beam instability. Scientists used ANSYS Mechanical to design stiffer support structures to ensure a steadier x-ray beam.

Reliance Industries Limited

Safran Landing Systems

SimuLabs

University of Perugia

Reliance Industries Limited

A shell and tube (U-tube) heat exchanger is used to preheat oxygen in the gasification plant of a petrochemical refinery. A proposal to add three stiffeners to support a horizontal perforated plate in the preheater had to be tested virtually before implementation. Using ANSYS CFD and ANSYS Mechanical, engineers were able to verify that the design was compatible with strength and flow requirements.

Safran Landing Systems

An airplane wheel manufacturer must precisely determine the loads applied to its equipment so that the wheel size yields the specified tire-to-ground interface of the tire manufacturers. To increase their knowledge of the behavior of tires, engineers ran simulations using ANSYS Mechanical, ANSYS ACT and ANSYS DesignXplorer. They were able to precisely study the loads applied to a wheel through the tire to ensure that their wheels would meet the specifications for a wide variety of airplane tire manufacturers.

SimuLabs

To transform a traditional crossflow water turbine into a wind turbine, engineers proposed adding a wing-shaped element as an integral part of the system. Combining ANSYS CFD with an ANSYS ACT extension and then optimizing the design with ANSYS optiSLang, they increased simulation efficiency, saving approximately $21,000 per project in engineering labor costs.

University of Perugia

To analyze the suitability of a material as a safety guard on a milling machine, ISO 23128 requires experimental tests based on impact between a standardized projectile and a flat plate. But these experiments are only valid for a limited type and thickness of material under perpendicular impact conditions. Using ANSYS Mechanical, researchers simulated the impact of an asymmetrical projectile hitting the flate plate at an angle with both translational and rotational speed, which better replicates real-world conditions.

Uppsala University and Vasa Museum

Zurich University of Applied Sciences

Uppsala University and Vasa Museum

The Vasa ship, the best-preserved 17th century ship in the world, is deforming in its museum setting in Sweden. Researchers used ANSYS Mechanical to simulate the time-dependent deformation of the wooden structure and its center of mass distribution. This enabled them to improve the load distribution and slow the ship’s deformation by designing an improved support structure.

Zurich University of Applied Sciences

Postoperative pain and functional limitations following knee replacement surgery are usually due to insufficient ligament balancing, resulting in unequal tension in the inner and outer ligaments on the side of the knee joint. Using ANSYS Mechanical in a preoperative analysis of forces acting on the ligaments can result in biomechanically correct alignment of the components to equalize ligament tension and minimize postoperative pain.

 

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