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The Lead

Research shows oceans vital for alien life

July 21, 2014 9:01 am | News | Comments

Until now, computer simulations of habitable climates on Earth-like planets have focused on their atmospheres. Mathematicians and earth sciences experts in the U.K. have recently taken the next step, creating a computer-simulated pattern of ocean circulation on a hypothetical ocean-covered Earth-like planet. They hope to learn how different planetary rotation rates would impact heat transport with the presence of oceans taken into account.

3-D nanostructure could benefit nanoelectronics, gas storage

July 15, 2014 10:57 am | by B.J. Almond, Rice Univ. | News | Comments

A 3-D porous nanostructure would have a balance of strength, toughness and ability to transfer...

Familiar yet strange: Water’s “split personality” revealed by computer model

June 18, 2014 2:01 pm | by Catherine Zandonella, Office of the Dean for Research | News | Comments

Seemingly ordinary, water has quite puzzling behavior. Why, for example, does ice float when...

Researchers find mechanism that forms cell-to-cell catch bonds

June 6, 2014 9:09 am | News | Comments

Certain bonds connecting biological cells get...

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Surprisingly strong magnetic fields challenge black holes’ pull

June 5, 2014 8:13 am | by Kate Greene, Lawrence Berkeley National Laboratory | News | Comments

A new study of supermassive black holes at the centers of galaxies has found magnetic fields play an impressive role in the systems’ dynamics. In fact, in dozens of black holes surveyed, the magnetic field strength matched the force produced by the black holes’ powerful gravitational pull, says a team of scientists.

How to Form an Engineering Simulation Plan

June 4, 2014 1:42 pm | by Nicholas M. Veikos, President, CAE Associates Inc., Middlebury, Conn. | Articles | Comments

Upon introducing engineering simulation into an organization, it’s important to formulate an implementation plan. Simply telling the engineering team to “have at it” doesn’t generally lead to positive results. Every plan will be different, but all can benefit from some basic considerations.

Safety Is Key When Planning for U.S. High-speed Rail Lines

June 4, 2014 11:46 am | by Xavier Fornari, Product Marketing Manager, ANSYS, Elancourt, France | Articles | Comments

High-speed rail is a frequently discussed topic, but one that has yet to become a reality in the U.S. A number of states and regions in the U.S. including Texas, California, the Pacific Northwest and Minnesota, to name a few, have planned projects to bring high-speed rail to fruition.

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Retaining Knowledge After an Engineer Leaves

June 4, 2014 11:31 am | by Paul Goossens, VP of Engineering Solutions, Maplesoft | Articles | Comments

If a senior engineer left an organization suddenly, how many hours would it take for the engineering team to take over his projects, confident that they understand not only the designs, but why those designs are the way they are? The typical answer is “far too many”. Widespread use of CAE and data management tools have made this task much easier than before, but these tools do little to record the thinking behind the results.

Discovery sheds light on how to control self-assembly process

June 3, 2014 8:35 am | News | Comments

Imagine a tower that builds itself into the desired structure only by choosing the appropriate bricks. Absurd, but in the nano world self-assembly is now a common practice for forming structures. Researchers in Austria have been investigating how they can control the ordering of self-assembling structures and discovered how to switch the assembly process on and off.

A cure for dry eye could be a blink away

May 29, 2014 8:37 am | by Susan Gawlowicz, Rochester Institute of Technology | News | Comments

A treatment for dry eye, a burning, gritty condition that can impair vision and damage the cornea, could someday result from computer simulations that map the way tears move across the surface of the eye. To understand dry eye, the team had to begin with the physics and chemistry of tears.

Electricity use slashed with efficiency controls for heating, cooling

May 23, 2014 1:13 pm | News | Comments

Commercial buildings could cut their heating and cooling electricity use by an average of 57% with advanced energy-efficiency controls, according to a year-long trial of the controls at malls, grocery stores and other buildings across the country. The study demonstrated higher energy savings than what was predicted in earlier computer simulations by the same researchers.

Improved computer simulations enable better calculation of interfacial tension

May 20, 2014 3:03 pm | News | Comments

Simulations in statistical physics are typically restricted to systems under 100,000 particles, many times smaller than the actual material quantities used in typical experiments. Finite-size corrections can adjust the results to the macroscopic scale. A team of researchers in Germany has now succeeded in better understanding how this technique works when it is used to assess interfacial tension, thus enabling more accurate predictions.

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Scientists study biomechanics behind amazing ant strength

May 20, 2014 2:40 pm | News | Comments

A small group of engineers at Ohio State Univ. combined laboratory testing and computational modeling conducted at the Ohio Supercomputer Center to determine the relationship between the mechanical function, structural design and material properties of the Allegheny mound ant, a creature that can lift objects many times heavier than its own body. The study could solve the mystery of how this structure actually works.

Planting the “SEEDS” of solar technology in the home

May 20, 2014 2:35 pm | News | Comments

In an effort to better understand what persuades people to buy photovoltaic systems for their homes, researchers at Sandia National Laboratories are gathering data on consumer motivations that can feed computer models and thus lead to greater use of solar energy. A primary goal of the project is to help increase the nation’s share of solar energy in the electricity market from its current share of less than .05% to at least 14% by 2030.

IBM research discovers new class of industrial polymers

May 16, 2014 2:03 pm | News | Comments

Scientists at IBM Research have used a new “computational chemistry” hybrid approach to accelerate the materials discovery process that couples laboratory experimentation with the use of high-performance computing. The new polymers are the first to demonstrate resistance to cracking, strength higher than bone, the ability to reform to their original shape (self-heal), and the ability to be completely recycled back to the starting material.

Using nature as a model for low-friction bearings

May 14, 2014 9:30 am | News | Comments

The mechanical properties of natural joints are considered unrivalled. Cartilage is coated with a special polymer layer allowing joints to move virtually friction-free, even under high pressure. Using simulations, scientists in Europe have developed a new process that technologically imitates biological lubrication and even improves it using two different types of polymers.

Physicists show unlimited heat conduction in graphene

May 8, 2014 9:22 am | News | Comments

Based on recent experiments and computer simulations, scientists at the Max Planck Institute for Polymer Research and the National Univ. of Singapore have attested that the thermal conductivity of graphene diverges with the size of the samples. This discovery challenges the fundamental laws of heat conduction for extended materials.

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Astronomers create first realistic virtual universe

May 7, 2014 2:43 pm | News | Comments

Move over, Matrix, astronomers at MIT/Harvard-Smithsonian Center for Astrophysics and the Heidelberg Institute for Theoretical Studies in Germany have done you one better. They have created the first realistic virtual universe using a computer simulation called "Illustris." Illustris can recreate 13 billion years of cosmic evolution in a cube 350 million light-years on a side with unprecedented resolution.

Sprites form at plasma irregularities in the lower ionosphere

May 7, 2014 9:46 am | News | Comments

Sprites are an optical phenomenon that occur above thunderstorms, about 37 to 56 miles above the Earth. Atmospheric sprites have been known for nearly a century, but their origins were a mystery. Now, a team of researchers has evidence that sprites form at plasma irregularities and may be useful in remote sensing of the lower ionosphere.

“Sweet spot” for salty water

April 28, 2014 7:50 am | by Morgan McCorkle, Oak Ridge National Laboratory | News | Comments

Computational modeling has given materials researchers new insight into the properties of a membrane that purifies saltwater into potable water. The resulting technology could help speed up inefficient desalination processes in use today. The research team used supercomputer simulations to explore the purification potential of a hybrid material called graphene oxide frameworks.

Computational record: Earthquake simulation tops one quadrillion flops

April 15, 2014 4:28 pm | News | Comments

A team of computer scientists, mathematicians and geophysicists in Germany have optimized the SeisSol earthquake simulation software at Leibniz Supercomputing Center to push its performance beyond the one petaflop/sec mark, which equates to one quadrillion floating point operations per second. SeisSol is used to investigate rupture processes and seismic waves.

When Physical Prototypes Fail, Simulation Provides the Answers

April 15, 2014 9:45 am | by Alexandra Foley, COMSOL Inc. | COMSOL, Inc. | Articles | Comments

In today’s fast-paced markets, engineers are continuously challenged to deliver products that meet market demand, improve operational efficiency and exceed customer expectations. Multiphysics simulation is an essential component of the product design workflow for creating innovative designs, especially when building prototypes becomes impractical or when taking actual measurements is not possible.

Oil and Gas Industry Training Requires Rich New Technology

April 15, 2014 8:06 am | by Oliver Diaz, CEO and Founder, FuelFX | Articles | Comments

The stakes are incredibly high for the safety and compliance efforts of today’s oil and gas industry. Engineers and crews must be trained for increasingly complex processes and procedures used aboard drilling rigs and production platforms. The consequences of inadequate training during oil production can be disastrous to both operator crews and the environment.

Carbon nanotubes grow in combustion flames

April 1, 2014 4:34 pm | News | Comments

Recent research in Japan, China and U.S. has revealed through theoretical simulations that the molecular mechanism of carbon nanotube growth and hydrocarbon combustion actually share many similarities. In studies using acetylene molecules as feedstock, a highly reactive molecular intermediate was found to play an important role in both processes forming CNTs and soot, which are two distinctively different structures.

Researchers develop new model of Earth’s dynamic interior

March 31, 2014 7:33 am | News | Comments

Seeking to better understand the composition of the lowermost part of Earth’s mantle, located nearly 2,900 km (1,800 miles) below the surface, a team of Arizona State Univ. researchers has developed new simulations that depict the dynamics of deep Earth. A paper published in Nature Geoscience reports the team’s findings, which could be used to explain the complex geochemistry of lava from hotspots such as Hawaii.

The rush to rain

March 17, 2014 8:31 am | by Mary Beckman, Pacific Northwest National Laboratory | News | Comments

A new analysis of satellite data reveals a link between dust in North Africa and West Asia and stronger monsoons in India. The study shows that dust in the air absorbs sunlight west of India, warming the air and strengthening the winds carrying moisture eastward. This results in more monsoon rainfall about a week later in India.

Interactive simulator takes driver behavior into account

March 10, 2014 7:43 am | News | Comments

Driving behavior is a key factor that is often insufficiently accounted for in computational models that gauge the dynamic characteristics of vehicles. Researchers in Germany have developed a new driving simulator designed to make the “human factor“ more calculable for vehicle engineers.

Freudenberg Puts FEA Seal of Approval on Gasket

March 6, 2014 12:09 pm | by Nick O'Donohoe, Science and Technology Writer, Parker Group | Articles | Comments

The wind has long been used as a metaphor for constant change, wayward and capricious. Wind turbine engineers deal with that changeability every day, along with a host of other challenging factors. Their products must operate in desert sandstorms and in corrosive salt water. The ambient temperature at the turbine site can be blisteringly high or numbingly frigid.

Offshore wind farms could tame hurricanes

February 27, 2014 1:26 pm | by Bjorn Carey, Stanford Univ. | Videos | Comments

For the past 24 years, Mark Z. Jacobson, a prof. of civil and environmental engineering at Stanford Univ., has been developing a complex computer model to study air pollution, energy, weather and climate. A recent application of the model has been to simulate the development of hurricanes. Another has been to determine how much energy wind turbines can extract from global wind currents.

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