2.1. Direction Integration Method (DIM)

Demos related to the DIM.

2.1.1. Ultrasound field

2.1.1.1. Demo: LineSrc_DIM_Demo1.m

Calculate the axial sound field at \(x = 0\) m.

2.1.1.1.1. Example 1

See Fig. 2.1.1, where the source settings are as follows.

wav = SoundWave('freq', 40e3);
prf = SrcProfile('name', 'uniform');
src = LineSrc('radius', .1, 'prf', prf, 'wav', wav);
../../_images/LineSrc_DIM_Demo1.jpg

Fig. 2.1.1 Axial ultrasound field at 40 kHz generated by a line source with a radius of 10 cm. The source profile is uniform (piston source). The on-surface pressure amplitude \(p_0 = 50\, \mathrm{Pa}\ (125\,\mathrm{dB})\).

2.1.1.2. Demo: LineSrc_DIM_Demo2.m

Calculate the 2D sound field.

2.1.1.2.1. Example 1

See Fig. 2.1.2, where the source settings are as follows.

wav = SoundWave('freq', 40e3);
prf = SrcProfile('name', 'uniform');
src = LineSrc('radius', .1, 'prf', prf, 'wav', wav);
../../_images/LineSrc_DIM_Demo2.jpg

Fig. 2.1.2 2D ultrasound field at 40 kHz generated by a line source with a radius of 10 cm. The source profile is uniform (piston source). The on-surface pressure amplitude \(p_0 = 50\, \mathrm{Pa}\ (125\,\mathrm{dB})\).