Blar i forfatter Fakultet for ingeniørvitenskap og teknologi "Karzhou, Andrei"

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    • Acoustical properties of solid-liquid composites and related computational problems 

      Karzhou, Andrei (Doctoral thesis; Doktorgradsavhandling, 2023-07-05)
      The thesis provides a study of acoustical performance and characterisation of solid-liquid composites. We address both experimental and numerical aspects of fluid-solid interaction problems. In the experimental part, we perform a comparative study of the sound damping properties of perforated plates with viscoelastic inclusions, such as polyurethane and soap emulsified with oil grease lubricant, ...

    • A Feedforward Neural Network for Modeling of Average Pressure Frequency Response 

      Pettersson, Klas; Karzhou, Andrei; Pettersson, Irina (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-22)
      The Helmholtz equation has been used for modeling the sound pressure field under a harmonic load. Computing harmonic sound pressure fields by means of solving Helmholtz equation can quickly become unfeasible if one wants to study many different geometries for ranges of frequencies. We propose a machine learning approach, namely a feedforward dense neural network, for computing the average sound ...