Why Is Ice Slippery Enough for Skiing and Skating?

Brianne Costa | December 2, 2016

Finding a scientific explanation for why ice is slippery seems simple enough, but it has actually been a subject of debate and confusion for centuries. As part of the world begins to bundle up for a blustery winter, let’s explore the science behind how the slipperiness of ice enables us to ski, skate, and even fall down in the parking lot.

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Magnus Ringh | November 18, 2016

One dessert that is sure to amaze your dinner guests is the baked Alaska. This classic treat consists of ice cream placed on a bed of sponge cake and covered in meringue. Although the dessert goes into a hot oven to caramelize the meringue, the ice cream inside surprisingly remains frozen. In this blog post, we use the heat transfer simulation capabilities of the COMSOL Multiphysics® software to find out how the baked Alaska works.

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Caty Fairclough | October 19, 2016

In certain food and pharmaceutical industries, different types of dryers are used to dry heat-sensitive products. Vacuum dryers offer one solution for removing water and organic solvents from these sensitive substances. For optimal vacuum dryer design performance, engineers need to balance the dual needs of a rapid drying time and high-quality end products. To achieve this, you can study the vacuum drying process with the COMSOL Multiphysics® software.

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Caty Fairclough | September 6, 2016

Refrigerated trucks must maintain a cool temperature in order to avoid damaging the products that they carry. Optimizing the insulation materials and cooling systems of these vehicles is therefore an important step in their design. To ensure that such components work effectively under open- and closed-door cycles, Air Liquide teamed up with SIMTEC, a COMSOL Certified Consultant, to perform heat transfer and CFD simulations with the COMSOL Multiphysics® software.

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Caty Fairclough | August 26, 2016

Around the world, trash is added to landfills at an increasingly rapid rate. Since these landfills take up large areas of land and can cause environmental issues, researchers are looking for safer, space-saving solutions. One option is to convert traditional anaerobic landfills into aerobic bioreactor landfills. This conversion process needs to be studied further, which could take years experimentally. For faster results, researchers at the University of Western Ontario used the COMSOL Multiphysics® software to efficiently analyze this process.

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Beatrice Carasi | August 22, 2016

The numerical analysis of fluid flow and temperature fields can offer valuable insight in many engineering applications. Efficiency, of course, is important when performing such simulations. Here, we’ll discuss the various formulations for fluid flow equations in the COMSOL Multiphysics® simulation software and when it’s best to use each option, paying particular attention to how this selection influences heat transfer analyses. We will also cover how to set up both natural and forced convection simulations using these formulations.

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Bridget Cunningham | August 16, 2016

Like many crops, the quality of dates is heavily impacted by agronomic practices. In Tunisia, for example, such elements have caused these soft edible fruits to become drier in nature. One approach to improving the quality of these dates is thermal processing, where the key unit of operation is hydration. Combining the power of experimental studies with simulation analyses, a team of researchers sought to optimize the hydration process in order to foster greater efficiency and reliability.

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Peng-Chhay Ung | August 15, 2016

The flash method, first described by W.J. Parker et. al in 1961, is a widely used technique for measuring the thermal conductivity of materials. Our Flash Method demo app, highlighted here, performs a numerical simulation of this experiment, offering a simplified approach to modifying parameters that can impact its overall accuracy. Today, we’ll take a closer look at this easy-to-use app, as well as the theory behind it.

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Abbie Weingaertner | August 1, 2016

Modern food processing techniques are constantly being analyzed and improved. To evaluate the efficiency of such techniques and the equipment that they utilize, researchers and engineers can turn to simulation tools like COMSOL Multiphysics. Numerical modeling apps are helping to bring this simulation power to a wider audience, accelerating the optimization of such processes along the way. Let’s see how this applies to the analysis of induction heating for food processing.

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Bridget Cunningham | July 20, 2016

Cryogenic techniques are used to treat a wide range of cosmetic dermatological problems as well as remove internal tumors and other damaged tissue. Shifting from the typical nitrogen-based approach, researchers at the University of Birmingham in the U.K. sought to investigate the potential of using a thermoelectric cooler, or Peltier device, to cool a cryogenic probe. Here’s a look at how COMSOL Multiphysics provided them with the tools to do so.

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Walter Frei | June 30, 2016

Thermostats are used in most homes for controlling furnaces and air conditioners to maintain a comfortable interior temperature. A simple thermostat controlling a heater will have on and off setpoints. Such a control scheme is easy to implement within COMSOL Multiphysics using the Events interface, as presented in a previous blog post. Today, we will expand this technique to include a delay, a time lag between turning the heater on or off, in a thermostat simulation.

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