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Bulk Viscosity of Methane

Posted 27 avr. 2023, 00:59 UTC−4 Acoustics & Vibrations, Materials, Physics Interfaces Version 6.0 0 Replies

Aditya Bansal
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Hello,

I want to use the Thermoviscous Acoustic interface with methane gas, but it requires me to enter its Bulk viscosity(BV).

I tried searching on the internet but didn't find anything. Can someone help me to find either its value or its dependece on the dynamic viscocity(DV)?

I found the relation of dynamic viscosity and bulk viscosity for air (BV = 0.6DV [https://doc.comsol.com/5.5/doc/com.comsol.help.aco/aco_ug_properties_fluids.16.2.html] ). Will this be a valid relation in case of methane or other gas as well?

Thanks

0 Replies Last Post 27 avr. 2023, 00:59 UTC−4
COMSOL Moderator

Hello Aditya Bansal

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