Figure 9. Transmission loss versus frequency at M = (0 – 0.2), c=565 m/s, T=800 ˚K at L2= L5= L8= L11 =123 mm, t=1mm, dh=1mm, σ=2%, r1=28.5 mm, and r2=75 mm

From

Numerical Assessment and Shape Optimization of Dissipative Muffler and Its Effect on I.C. Engine Acoustic Performance

Sabry Allam

American Journal of Vehicle Design. 2014, 2(1), 22-31