Effect of using a reflecting sheet in an air gap on the thermal performance of hollow walls and roofs

Reflection and transmission of plane aco

Reflection and transmission of plane acoustic waves in an infinite annular duct with a finite gap on the inner wall

✍ Gökhan Çınar; Hülya Öztürk; Özge Yanaz Çınar 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 353 KB

## Communicated by W. Sprößig The diffraction of acoustic waves by an infinitely long annular duct having a finite gap on the inner wall is investigated rigorously. The related boundary-value problem is formulated into a modified Wiener-Hopf equation, which is then reduced to a pair of simultaneou