Search for dissertations about: "Chenyang Weng"

Found 2 swedish dissertations containing the words Chenyang Weng.

  1. 1. Modeling of sound-turbulence interaction in low-Mach-number duct flows

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Chenyang Weng; KTH.; KTH.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Järnvägsgruppen - Ljud och vibrationer; Järnvägsgruppen - Ljud och vibrationer;

    Abstract : When sound waves propagate in a duct in the presence of turbulent flow, tur- bulent mixing can cause extra attenuation of the sound waves in addition to that caused by the viscothermal eects. Experiments show that compared to the vis- cothermal eects, turbulent absorption becomes the dominant contribution to the sound attenuation at suciently low frequencies. READ MORE

  2. 2. Theoretical and numerical studies of sound propagation in low-Mach-number duct flows

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Chenyang Weng; KTH.; KTH.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aeroacoustics; Acoustic wave absorption; Acoustic wave propagation; Boundary layer turbulence; DNS; Teknisk mekanik; Engineering Mechanics;

    Abstract : When sound waves propagate in a duct in the presence of turbulent flow, turbulent mixing can cause attenuation of the sound waves extra to that caused by the viscothermal effects. Experiments show that compared to the viscothermal effects, this turbulent absorption becomes the dominant contribution to the sound attenuation at sufficiently low frequencies. READ MORE