hi:
We are trying to do heat simulation on a 700x1400 grid. However, we found that that dimension of heat simulation would require >190GB RAM. We therefore changed the fft padding in extractAmpPhase function to 1. We wonder what would that do to the heat simulation results? Also should the heat simulation be ran on p_max? Can it?
Thanks!
kWave
A MATLAB toolbox for the timedomain
simulation of acoustic wave fields
fft padding in "extractAmpPhase" function in heat simulation
(2 posts) (2 voices)
Posted 2 months ago #

Hi Hammerben1,
If you have followed the "Heating By A Focused Ultrasound Transducer" example and recorded for an integer number of points per period, you can turn off the padding and windowing, i.e., use:
% extract the pressure amplitude at each position p = extractAmpPhase(sensor_data.p, 1/kgrid.dt, freq, ... 'FFTPadding', 1, 'Window', 'Rectangular');
Does that answer your question?
Brad.
Posted 3 weeks ago #
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