k-Wave

1. bmezhou
   

   Member
   Joined: Oct '13
   Posts: 6

   I'm performing some numerical study of acoustic propagation using a k-space method. When a acoustic pulse pass through a round inclusion, the acoustic field would become very complicated in the inclusion (see attached figure), which is not observed in the FDTD results.

   http://pan.baidu.com/s/1GGlkD

   Posted 10 years ago #

2. bmezhou
   

   Member
   Joined: Oct '13
   Posts: 6

   Or use this link http://instagram.com/p/fVCVw7ulHR/

   Posted 10 years ago #

3. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,640

   Hi bmezhou,

   Are you using k-Wave or your own k-space code? Could you tell us a little more about your simulation and what you expect to see?

   Brad.

   Posted 10 years ago #

4. bmezhou
   

   Member
   Joined: Oct '13
   Posts: 6

   Hi Bradley,

   I'm using Yun's second-order k-space method (UFFC 2012). I found the backscattered wave of the k-space and the FDTD did not match when I using a cylinder inclusion with a homogeneous background.

   Do I have to smooth the object?

   Thanks.

   Posted 10 years ago #

5. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,640

   There is a comparison the 1st/2nd order k-space methods with and without smoothing here (see Fig. 5) that might be helpful.

   Posted 10 years ago #

6. bmezhou
   

   Member
   Joined: Oct '13
   Posts: 6

   Got it. Thank you!

   Posted 10 years ago #

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