Now showing items 1-11 of 11

  • Ayati, Anis Awal; Steiros, Konstantinos; Miller, A Mark; Duvvuri, Subrahmanyam; Hultmark, Marcus (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Abstract. We introduce an improved formulation of the double-multiple streamtube (DMST) model for the prediction of the flow quantities of vertical axis wind turbines (VAWT). The improvement of the new formulation lies in ...
  • Ayati, Anis Awal (Master thesis / Masteroppgave, 2010)
    The aerodynamic effects on a wind turbine blade's tip region are investigated using the Lifting Line Theory (LLT). The LL equation is solved using two different approaches: the Fourier Method (FM) and the Simplification ...
  • Ayati, Anis Awal; Farias, P.S.C; Azevedo, L.F.A.; de Paula, I.B. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    The evolution of interfacial waves on a stratified flow was investigated experimentally for air-water flow in a horizontal pipe. Waves were introduced in the liquid level of stratified flow near the pipe entrance using an ...
  • Chinello, Gabriele; Ayati, Anis Awal; McGlinchey, Don; Ooms, Gorik; Henkes, Ruud (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    Stratified gas–liquid flow is a flow regime typically encountered in multiphase pipelines. The understanding and modeling of this regime is of engineering importance especially for the oil and gas industry. In this work, ...
  • Ayati, Anis Awal; Vollestad, Petter; Jensen, Atle (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Stratified air-water flow in a horizontal pipe is investigated experimentally using particle image velocimetry and conductance probes. This flow regime is characterized by a complex interplay between a turbulent airflow ...
  • Ayati, Anis Awal; Vollestad, Petter; Jensen, Atle (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    Stratified air-water flow in a horizontal pipe is investigated experimentally using particle image velocimetry and conductance probes. This flow regime is characterized by a complex interplay between a turbulent airflow ...
  • Vollestad, Petter; Ayati, Anis Awal; Angheluta, Luiza; Lacasce, Joseph Henry; Jensen, Atle (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    We investigate the effect of waves on the airflow in horizontal two-phase pipe flow. Velocity fields in the gaseous phase were acquired by particle image velocimetry (PIV), while interfacial elevation was measured with ...
  • Vollestad, Petter; Jensen, Atle; Ayati, Anis Awal (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
  • Vollestad, Petter; Ayati, Anis Awal; Jensen, Atle (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    We perform an experimental analysis of two-phase stratified wavy pipe flow, with the aim to detect and quantify the effect of small scale wave breaking. Particle image velocimetry is employed to analyze the velocity fields ...
  • Ayati, Anis Awal; Kolaas, Jostein; Jensen, Atle (Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)
    Simultaneous Particle Image Velocimetry (PIV) measurements of stratified turbulent air/water flow in a horizontal pipe have been performed using water droplets as tracers in the gas-phase. The use of water droplets as ...
  • Ayati, Anis Awal; Carneiro, Joao N.E. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    This study presents a statistical analysis of interfacial waves in a turbulent stratified air-water flow inside a 10 cm diameter pipe. Wave elevation measurements were acquired using conductance probes with high sampling ...