1. NRBF sources: StD = 1.1
23 / 31

2. r/R
NRBF sources: StD = 1.45
2
1
0
0
5
10
15
z/R
24 / 31

3. r/R
NRBF sources: StD = 2.55
2
1
0
0
5
10
15
z/R
25 / 31

4. r/R
Qualitative validation: n = 0, StD = 1.1
DNS
6
4
2
0
r/R
0
10
20
30
40
z/R
50
60
70
LEE
6
4
2
0
0
10
20
30
40
z/R
50
60
70
26 / 31

5. Conclusion
1
Algorithm to compute the NRBF sources at multiple frequencies
2
In laminar jet: linear shear noise term is major source
NRBF decomposition and sources for a fully turbulent jet
3
wavepackets
monopole
vortex pairing
27 / 31

6. Acknowledgements
Thank you!
28 / 31

7. Part IV
Extras
29 / 31

8. Pressure in Fourier domain (ω = 1.2)
0
0.25
0.5
2
kr
1
0
1
kz
2
Pressure P1.2 (k)
30 / 31

9. Pressure in Fourier domain (ω = 1.2)
0
0.25
0
0.5
0.5
1
3
2
2
kr
kr
1
1
0
0
1
kz
2
Pressure P1.2 (k)
0
1
kz
2
3
Gaussian filter W(k)
30 / 31

10. Pressure in Fourier domain (ω = 1.2)
Decomposition
0
0.25
0.5
2
kr
1
0
1
kz
2
Radiating pressure
P1.2 = WP
31 / 31

11. Pressure in Fourier domain (ω = 1.2)
Decomposition
0
0.25
0
0.5
0.25
0.5
3
2
2
kr
kr
1
1
0
0
1
kz
2
Radiating pressure
P1.2 = WP
0
1
kz
2
3
Non-radiating pressure
P1.2 = (1 − W)P1.2
31 / 31