How to Model Fluid-Structure Interaction in a Water Balloon

Phillip Oberdorfer December 15, 2017

The physics behind filling a water balloon seem simple at first glance, but involve a rather complex interplay of fluid flow and a nonlinear hyperelastic material. Fortunately, it is easy to set up and solve this type of model in the COMSOL Multiphysics® software. Let’s see how…

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Phillip Oberdorfer September 6, 2017

When simulating heat transfer in fluids with forced convection, we can often neglect the influence of temperature variations on the flow field unless the requirements on accuracy are very high. Computing the flow field independently might substantially decrease the computational cost with a negligible impact on accuracy in the solution. In this blog post, we demonstrate the advantages of using a one-way coupling in the COMSOL Multiphysics® software with a nonisothermal flow example.

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Phillip Oberdorfer November 15, 2016

At the COMSOL Conference 2016 Munich, simulation engineers and researchers from around Europe came together to share their work and achievements. Although there were many innovative and inspiring presentations on using the COMSOL Multiphysics® software in a variety of application areas, six of the conference papers and posters stood out among the rest. Learn more about the best papers and posters from the COMSOL Conference 2016 Munich below.

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Phillip Oberdorfer October 20, 2016

Last week, the COMSOL Conference 2016 Munich brought together academic and industry simulation experts from all over Europe. Now, we would like to share some photographs of the event with you. If you joined us at the conference, try to find yourself in the photo slideshow!

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Phillip Oberdorfer April 9, 2015

Stirling engines, or heat pumps, are systems that are able to work on incredibly low temperature differences. In fact, some types of Stirling engines only need human body heat in order to operate. Here, we explore the dynamics of this interesting machine that you can build at home and demonstrate how to model it using COMSOL Multiphysics.

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Phillip Oberdorfer August 18, 2014

Safe and cost-effective drilling is a major issue in the oil and gas industry. In addition to the common prospecting risk, the borehole itself provides uncertainties that are not desired, but unavoidable. Today, we would like to show how numerical simulations can help here. The goal is to predict the stability of an open-hole multilateral well for deciding if the well will need expensive mechanical stabilization — or not.

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Phillip Oberdorfer May 23, 2014

The use of geothermal heat for building climatization is a cost-effective and sustainable method. In part three of our Geothermal Energy series, we will have a closer look at shallow tubing heat collectors. An accurate prediction of their thermal performance, considering both the piping layout and local thermal properties, turns out to be an appropriate job for the Pipe Flow Module.

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Phillip Oberdorfer April 24, 2014

In the second part of our Geothermal Energy series, we focus on the coupled heat transport and subsurface flow processes that determine the thermal development of the subsurface due to geothermal heat production. The described processes are demonstrated in an example model of a hydrothermal doublet system.

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Phillip Oberdorfer March 28, 2014

In this first entry of our new Geothermal Energy series, we introduce the concept of modeling geothermal processes and the many physical phenomena involved. We also show you an example model of a borehole heat exchanger.

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