k-Wave

1. Yosuke Miyauchi
   

   Member
   Joined: Apr '17
   Posts: 2

   Hi Brad,

   I'm studying about 2.1 MHz waves propagating in water.
   But, I can't assign best value to "dx" and "dt".

   In my study, dx = 0.3 mm, dt = 50 nsec are assigned, and these parameters meet Nyquist frequency.

   But, I think 0.3 mm and 50 nsec are tight conditions for 2.1 MHz in water.

   Could you give me some ideas ?

   Best regards
   Yosuke

   Posted 6 years ago #

2. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,643

   Hi Yosuke,

   There are some suggestions in Sec. 3.2 of the user manual. Depending on the complexity of your simulation, you could start with 3 points per wavelength, and a CFL of 0.3, and then decrease them to make sure your simulation has converged.

   Brad.

   Posted 6 years ago #

3. Yosuke Miyauchi
   

   Member
   Joined: Apr '17
   Posts: 2

   Hi Brad,

   I sincerely thank you for your polite and thorough response.

   I will improve my simulation.

   Yosuke

   Posted 6 years ago #

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