Hall of Fame

Best in Show 2017: Commercial

Delphi Automotive Systems

For over half a century the fuel injection engineering community has been pursuing knowledge-based nozzle design optimization for high-pressure diesel injection. A key challenge has been to understand the primary breakup process, which involves highly complex multiphase and multiscale fluid dynamics phenomena. ANSYS CFD simulation showed correlations between the vortex flow pattern and the primary spray breakup pattern, and successfully predicted the spray patterns for an innovative nozzle design.

HENN GmbH & Co KG

To produce innovative connection technology for mufflers installed between a turbocharger and an automotive pipe, engineers turned to ANSYS Mechanical and ANSYS CFD. Mechanical was used to compute structural deformations, stresses and contact pressures for the connecting mechanism, and CFD was used to compute pressure losses. The company was able to automatically generate custom muffler designs to address specific transmission loss requirements in a few days instead of a few weeks, and increased product quality while reducing production costs.

SimuLabs

Because a previous marine turbine design exhibited performance-degrading cavitation in the hub region at high rotation rate, engineers used simulation to improve the aerodynamic design of a non-cavitating marine turbine. A combination of ANSYS SpaceClaim, ANSYS CFD, ANSYS Simplorer and ANSYS optiSLang software was used. The cavitation was fully eliminated using a numerical optimization approach by updating the local geometry of the turbine’s helical blades. Full automation of all simulation processes eliminated operator error and increased simulation efficiency.

 

Best in Show 2017: Academic

Cardiff University

Tidal stream turbines can capture the energy of ocean tides as a source of renewable energy. Because they would be deployed in arrays, the wake of one turbine could affect the performance of another. Large-eddy simulation using ANSYS CFD enabled researchers to analyze the wakes using the full turbine geometry, instead of simplified geometries required by other simulation tools. These simulations could increase the reliability and reduce the costs of tidal energy.

Dartmouth College

Cosimulation using ANSYS HFSS and ANSYS Designer/Nexxim was used to design a microstrip resonator with surface mount technology (SMT). After importing the CAD designs and parametrizing the positions of the SMT elements on the PCB with Designer, HFSS tested the electromagnetic properties of hundreds of possible configurations in a short time to arrive at the optimal design.

University of California - Irvine

Hyperloop is being developed as a long-distance means of mass transportation in which people will ride at speeds up to 700 mph in pressurized capsules through reduced-pressure tubes on an air cushion driven by linear induction motors and air compressors. ANSYS structural, CFD, thermal and magnetic analysis solutions are being used by student teams to solve the challenges of carrying most of the weight of a train on low-friction air-bearings and stopping the capsules using only permanent magnetic brakes.

 

Best in Show 2017: Startup

 

 

Jacobs Analytics

To ensure that the heat in a smoker was consistent so that the food was not under- or over-cooked or dry, Jacobs employed ANSYS technology to model hundreds of concepts and optimize the design. Using simulation before building any prototypes saved tens of thousands of dollars in prototypes and testing.

 

 

 

Hall of Fame Finalists 2017

California Polytechnic State University

When your goal is to break the world land-speed record for a solar-powered vehicle, minimizing aerodynamic drag is essential. Using ANSYS CFD to simulate the airflow around a solar car with various canopy configurations resulted in a design that extended the canopy forward. This improved the aerodynamics by eliminating the necklace vortices formed by the original canopy design.

CERN

The high-energy particle beams in the Large Hadron Collider can sometimes collide with the collimators due to magnetic malfunction. Researchers performed fully coupled thermo–structural simulations to determine the temperature gradient and resultant stresses in the collimator material using ANSYS Mechanical and ANSYS LS-Dyna. The ability to predict the response of a material to particle beam impact is vital to the design of any particle beam intercepting device.

Emerson

When creating a vortex flowmeter measurement system, the main problem is ensuring the stability of vortex formation processes in a sufficiently wide velocity range — low liquid and gas flow rates present a particular challenge. Using ANSYS CFX for fluid and gas flow, along with ANSYS Mechanical and HPC, engineers concluded that the optimal turbulence model is the standard k-e model. Simulation enabled them to discover the optimal flow-part shape of a vortex flowmeter without performing physical experiments, which improved the quality of the flowmeter and reduced design time.

Marelli Motori

Producing efficient generators for hydropower, cogeneration, and oil and gas applications requires an understanding of the complex interactions of structural, thermal, flow and frequency physics. Using ANSYS Structural, CFD and modal analysis for multiphysics simulations has helped engineers to optimize the structural (frame, shield, fan and shaft), thermal (cooling efficiency and thermal exchange) and frequency response of innovative power generators. The result has been double-digit improvement in the power output/final cost ratio for many products.

 

Massachusetts Institute of Technology

Buildings on urban streets can block air flow and prevent atmospheric wind from penetrating into the streets, leading to buildup of pollutants such as automotive exhausts. Large eddy simulations run in ANSYS CFD showed that a “wind catcher” could effectively increase the wind’s near-ground velocity by a factor of 2.5 to flush out pollutants and improve air quality in the streets.

Norwegian University of Science and Technology

Researchers used ANSYS AQWA to assess the feasibility of a novel installation method (based on the inverted pendulum principle) of fully assembled offshore wind turbines. By simulating lifting processes using winches, hydrodynamic interaction, forward motion of vessels, and contact models using fenders for docking cones and grillage systems, they validated models for offshore trials or for building a 3-D training simulator.

Omnia Engineering

When liquid flows through a sensor based on the fluidic oscillator principle, the oscillating pressure can be translated into a flow rate. The challenge of including a thermocouple for temperature measurements inside the sensor without affecting the flow pattern (laminar to turbulent) required engineering simulations. ANSYS CFD simulations obtained results that matched experimental results over a large range of Reynolds numbers, leading to an on-time, on-budget release of a new, thermocouple-enhanced flow sensor.

PCKA

Efficient heat transfer is critical to aerospace vehicles constrained by weight and volume; aluminum foam can be an ideal solution in these cases. Both fluid dynamics and heat transfer were modeled in ANSYS CFD, providing high-resolution predictions of thermal/hydraulic performance in system-level aluminum foam models representing the thermal management systems of tactical aircraft. Creating performance curves prior to expensive trial-and-error fabrication and testing makes the design of innovative heat exchangers possible.

Polytechnique Montréal

Understanding the behavior of a diesel jet close to the injection nozzle is a challenge for Pratt & Whitney Canada because disintegration of the jet makes standard multifluid mixture models inaccurate. Researchers at Polytechnique Montréal used ANSYS CFD to perform two simulations, one single phase and one multiphase, resulting in calculation of the jet’s core mass, which decreased with the jet's penetration. The quantity of liquid structures removed from the jet's core can be deduced and the interfacial surface density can be estimate through the use of a user-defined function.

SpinChem

The rotating bed reactor (RBR) is a tool for chemists who perform reactions involving a liquid medium and solid particles. The flow rate through an RBR influences the performance of the reactor, so engineers needed to know the impact of different operating parameters on the throughput for product optimization purposes. ANSYS CFD was used to perform a parametric study with respect to the angular velocity of the RBR, the particle size of the solid phase and the viscosity of the fluid phase. The simulation revealed the impact of each individual parameter on the reactor performance over a wide range of values.

SUNY Maritime

Decreasing the hull structure weight of a maritime chemical tanker means that more cargo can be carried at a reduced freight rate. ANSYS Mechanical simulations were used to design a sandwich plate (a polyurethane elastomer core bonded between two outer steel facings) to replace traditionally used closely spaced steel stiffeners. The sandwich plate reduced areas of high stress concentration, eliminated the need for painting the stiffeners and decreased the weight of the stiffening structure by 25 percent.

University of Aberdeen

In an efficient boiler system, the fluid flow should be homogeneous in each branch of the boiler piping. Achieving this homogeneity is complicated by a two-phase flow of gas and ash particles in the pipes. ANSYS CFD was used to design a piping system that traps the ash by gravitational separation at the cone structure at the bottom of the piping, and distributes the gas flow homogeneously among eight pipe branches downstream.

 

 
 

University of Magdeburg

Efficient mixing of components to ensure product uniformity and quality is an essential function of stirred tank reactors. ANSYS CFD and ANSYS Meshing were used to simulate a stirred tank with four side baffles agitated by a six-blade Rushton impeller. The strong trailing edge vortices that were seen in the simulations were used to investigate power consumption, dissipation rate and macro-instabilities, as well as the small-scale turbulent structures responsible for mixing.

University of Tulsa

Solid particle erosion is of great importance in many industries, including oil and gas production, drilling, and processing and transportation of minerals including oil sands. ANSYS CFD was used along with a mechanistic erosion equation implemented as a user-defined function to simulate the steady-state flow of silica sand particles from a nozzle and their impingement on a stainless steel surface. This study makes it possible to reliably predict erosion patterns in industrial equipment subjected solid particle erosion.

 

 

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