General Mechanical

General Mechanical

Modeling An Ultrasound Transducer

    • Mahyar92
      Subscriber

      Hi everyone,

      I need to model a capacitive micromachined ultrasound transducer (CMUT) in ANSYS workbench. Basically, a CMUT is a clamped membrane which is electrically actuated to generate ultrasound to the fluid medium to which it is coupled. CMUTs are first biased with DC voltage, and then actuated with an AC signal to have dynamic motion.

    • peteroznewman
      Subscriber
      Does the fluid need to flow, or is it sufficient that the ultrasonic pressure waves travel through the fluid medium?
      Perhaps you can use Harmonic Acoustics to solve for the harmonic pressure in the fluid medium.
      In that way, you don't need Fluent at all.
    • Mahyar92
      Subscriber
      Hi Peter Thanks for your reply. To my understanding, Harmonic Acoustics won't take the damping effect of the fluid medium on the membrane into account. I did some search online and found out that apparently system coupling is not supported for Harmonic Analysis. So, I will perform a transient analysis instead to see how it works...
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