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-   CFX (https://www.cfd-online.com/Forums/cfx/)
-   -   tutorial for CFD & acoustic analysis ansys workbench 11 (https://www.cfd-online.com/Forums/cfx/64786-tutorial-cfd-acoustic-analysis-ansys-workbench-11-a.html)

kkboy1 February 24, 2015 02:28
Quote:
Originally Posted by ghorrocks (Post 533135)
If my task was to find the ultrasonic frequency which cleaned best I would just get a variable frequency ultrasonic source and sweep a range of frequencies and measure which cleaned best. Sounds quick and easy to me compared to doing a simulation of it. This would be a very difficult simulation to get accurate.

There are no variable ultrasonic frequency transducer. The purpose is to determine the optimum frequency and fabricate the transducer.

ghorrocks February 24, 2015 04:22
Sure you can:
http://www.iultrasonic.com/ultrasoni...st-d700cr.html
http://www.brainpowerusa.com/shoppin...275&bestseller
http://www.mpi-ultrasonics.com/conte...sonic-cleaning

Anyway: The CFD model you describe is going to be so difficult and complex that I would recommend strongly against it. The only way I can see to practically model what you describe is with some reduced order modelling, or a model which looks at how strong the pressure waves are at the cleaning location and you infer cleaning effectiveness from that.

kenzakhan August 23, 2017 02:05
Quote:
Originally Posted by grippen (Post 425642)
I'm looking for an solution to. Did you find an satisfying way to simulate the ultrasonic waves in water flow?

grippen have you find out the solution ? I need some help

kenzakhan August 23, 2017 02:08
Quote:
Originally Posted by irina (Post 238930)
I would like to to examine the effect of flow turbulence on sound waves propagating across a velocity field inside flow meter's duct. If CFX is not a good tool maybe you know a really good tool for such investigations. Actually I want to find the way for increasing the accuracy of an ultrasonic flowmeter


have you find out the solution ? I'm doing the same need some guidance

ghorrocks August 23, 2017 02:43
If you are trying to model linear acoustic waves in a liquid then CFX does not sounds like an appropriate tool. Something like SYSNOISE or other acoustic simulation software would appear more suitable. I think ANSYS Mechanical has some new acoustic capabilities in the new release as well (V18.2).

kenzakhan August 23, 2017 06:06
which is the proper way of doing this type of analysis ? whether it involves programming or not ?

ghorrocks August 23, 2017 07:44
I do not have time to write step by step guides, I am a busy person.

If you describe what you are trying to do we can suggest whether CFX is a suitable software.

kenzakhan August 23, 2017 13:10
I am trying to find out flow rate of natural gas by passing out ultrasonic waves

kenzakhan September 14, 2017 03:34
Quote:
Originally Posted by ghorrocks (Post 238934)
This is a pretty tricky piece of modelling. CFX will be able to do it but the simulations are going to be very big and take ages to run.

Have a look at SYSNOISE. I don't know if it can do all the physics you will need but if it can it will be much faster than CFX. Also do a google search, there are lots of packages out there. But I can guarantee CFX has the necessary physics to model it - the question is whether the simulation will finish before the next millennium.

hey gorrocks!

I clamp two transducers at 45 degree to each other,how can I send and receive ultrasonic waves from them? kindly guide


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