Comparing Static and Dynamic Wall Heat Exchangers with Simulation

Bridget Paulus February 27, 2018

Due to their small size and efficiency, compact heat exchangers are used in many application areas, including HVAC, nuclear power, and electronics. To help increase heat transfer rates and reduce pressure drops in these devices, a large number of studies have been performed, exploring concepts such as incorporating a deforming wall into the design. Using the COMSOL Multiphysics® software, you can evaluate a dynamic wall heat exchanger design.

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Thomas Forrister February 20, 2018

When a car hits a pothole, the suspension system can take on major damage in a matter of seconds. Suspension systems must be able to adapt to myriad road conditions while supporting the wheels, seats, and body of the car. To study the performance of a vehicle suspension system, you can use multibody analyses and a simplified lumped model of a mechanical system.

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Bridget Paulus February 15, 2018

The interference fit between two parts has to be just right. Think of it as the Goldilocks quandary of structural mechanics: if the fit is too loose, the parts won’t hold together; if it’s too tight, the parts can’t join. For optimal performance of a structure involving joined parts, the interference fit needs to be calculated. One method is to create a simulation app, which can efficiently compute the contact pressure and surface displacement of two joined parts.

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Prashant Srivastava February 14, 2018

Bearings, specifically rolling element bearings, are some of the most commonly used industrial components. These bearings are found in gearboxes, conveyors, motors, and rolling mills due to the low friction and low starting torque compared to hydrodynamic bearings. They can also handle changes in speed, temperature, and loads. In this blog post, we will look at different bearing types and demonstrate how to model a rotor system supported on roller bearings using the COMSOL Multiphysics® software.

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Caty Fairclough February 13, 2018

To treat atherosclerosis, a cardiovascular disease in which a buildup of plaque causes an artery to narrow, doctors can insert a tiny wire mesh tube called a stent into the obstructed artery. Expanding the stent opens up the artery and helps restore blood flow. To successfully perform this operation and minimize potential health hazards, stent designs must be thoroughly studied and optimized. To do so, we can perform a nonlinear structural mechanics analysis with the COMSOL Multiphysics® software.

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Bridget Paulus February 7, 2018

Natural convection is a type of heat transport found in engineering applications of all sizes. For instance, this phenomenon helps maintain a reasonable temperature in both small electronic devices and large buildings. No matter the application area, design engineers can use the COMSOL Multiphysics® software to model natural convection in air for both 2D and 3D geometries.

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Caty Fairclough January 31, 2018

Due to their flexible fuel choice options, immovable parts, and potential for efficient power generation, thermophotovoltaic (TPV) systems have a wide variety of possible applications. For instance, these systems could help provide portable energy, advance space travel, and power automobiles. However, engineers must first improve the efficiency of TPV systems as well as reduce system costs and device temperatures. To accomplish these goals, engineers can use simulation to analyze and optimize their TPV designs.

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Caty Fairclough January 29, 2018

Micromirrors have two key benefits: low power consumption and low manufacturing costs. For this reason, many industries use micromirrors for a wide range of MEMS applications. To save time and money when designing micromirrors, engineers can accurately account for thermal and viscous damping and analyze device performance via the COMSOL Multiphysics® software.

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Claire Bost January 24, 2018

Computing laminar and turbulent moisture flows in air is both flexible and user friendly with the Moisture Flow multiphysics interfaces and coupling in the COMSOL Multiphysics® software. Available as of version 5.3a, this comprehensive set of functionality can be used to model coupled heat and moisture transport in air and building materials. Let’s learn how the Moisture Flow interface complements existing functionality, while highlighting its benefits.

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Henrik Sönnerlind January 22, 2018

All structural engineers use Saint-Venant’s principle, whether actively or subconsciously. You can find various formulations of this principle in most structural mechanics textbooks, but its exact meaning is not obvious. Saint-Venant’s principle tells us that the exact distribution of a load is not important far away from the loaded region, as long as the resultants of the load are correct. In this blog post, we will explore Saint-Venant’s principle, particularly in the context of finite element (FE) analysis.

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Edmund Dickinson January 17, 2018

As two of the greatest mathematicians to have ever lived, Leonhard Euler and Joseph-Louis Lagrange made numerous contributions to continuum mechanics. Combining their individual descriptions of the subject inspired the arbitrary Lagrangian-Eulerian (ALE) method, a technique that can be used for a multitude of simulation applications. Find out how the work of Euler and Lagrange helped create the ALE method and how it aids your simulations in the COMSOL Multiphysics® software.

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