Heat Transfer

Valerio Marra | December 21, 2012

The winter here in Boston has been very mild so far. A few days I would even have liked to have the air conditioning back on. I checked in with one my colleagues to check if he was having an equally hard time staying cool, and to my surprise, he was not. Why? He had constructed a make-shift air conditioner (A/C).

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Andrew Griesmer | December 10, 2012

The latest version of COMSOL Multiphysics features a brand new way to use COMSOL. With LiveLink™ for Excel® you can modify and run COMSOL models in Microsoft Excel® 2007 or 2010. This combines the familiarity of Excel® with the physics simulation capabilities of COMSOL. Thus, making it easy for users of Excel to run multiphysics simulation without operating COMSOL themselves. A new LiveLink™ for Excel® video tutorial demonstrates the powerful combination. In the video, the main features to help you […]

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Fanny Littmarck | October 26, 2012

Out of all metals, the most frequently extruded is aluminum. Aluminum extrusion entails using a hydraulic ram to squeeze an aluminum bar through a die. This process will form the metal into a particular shape. Extruded aluminum is used in many manufacturing applications, such as building components for example. The process of shaping metal alloys, like aluminum, can be modeled using COMSOL Multiphysics.

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Fanny Littmarck | September 10, 2012

Who loves coffee? That’s what I thought; most of you. I for one cannot go a day without fueling up on coffee. Now that fall is on its way, the cooler weather will require better insulation of my coffee when I take it to-go, in the name of a travel mug (i.e., a thermos). This leads me to wonder: how long will coffee stay warm inside a thermos if I bring it outside?

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Fanny Littmarck | August 29, 2012

The end of August marks the end of summer here in New England. Already nostalgic and unwilling to let the season go, I decided to look into some “beach physics”. In May we released a new solar radiation feature in our Heat Transfer Module that will be helpful in many solar applications — including how to avoid overheating on the beach, apparently. Here’s how engineers can stay cool on the beach.

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Fanny Littmarck | August 21, 2012

When it gets dark, you flick on the lights. If you were to model this simple example, you would need to take all forms of heat transfer within consideration; convection, conduction, and radiation are all at play when a light bulb is flicked on.

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Cinzia Iacovelli | August 17, 2012

During a recent Heat Transfer Simulations webinar we demonstrated some good examples using “everyday life” type scenarios. Heat transfer occurs in many situations indeed: potatoes cooking in the microwave, hot coffee in a cup, and on the beach, with solar radiation. And most of us have at some point boiled water to make pasta for dinner. Heat transfer is at work then too.

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Valerio Marra | July 19, 2012

Remember those retro desk ornaments of the 1960’s, those lamps filled with colorful wax that began to move when the lamp was lit? I’m talking about lava lamps, or as I like to call them, “Rayleigh–Taylor instability machines”. They may not be popular among today’s youth, but I still own one and I thought it would be interesting to look beyond the dyed blobs of wax and observe the physics involved in lava lamps.

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Fanny Littmarck | July 4, 2012

The end of July marks the beginning of a $20 million R&D project led by the Oak Ridge National Laboratory (ORNL) to produce and process plutonium-238. The U.S. space program will be using the Pu-238 that is to be produced by ORNL as fuel for future deep-space missions.

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Fanny Littmarck | May 22, 2012

Knowing the sun’s radiation and thermal effects is very important to designers within the building industry, especially in designing “green” buildings. Heat transfer also plays a vital role in designing outdoor devices in terms of maintaining temperatures in extreme hot or cold environments. To use the words of Nicolas Huc, project leader for the Heat Transfer Module development at COMSOL in France: “it makes a huge difference if you forget to take the sun’s radiation within account”.

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Phil Kinnane | March 30, 2012

A couple of days ago I blogged about the team at Lahey Clinic who are using COMSOL Multiphysics to model their neuromodulation therapy of patients. In their example, they place electrodes close to the spine and, through electric current, stimulate the area around these electrodes to relieve back pain. The reason why modeling is important for them is because it’s quite difficult to actually access these treatments to measure their effectiveness and possible detriments.

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