Sökning: "Ola Widlund"

Hittade 3 avhandlingar innehållade orden Ola Widlund.

1. 1. A Reynolds stress closure for magnetic dissipation of turbulence in liquid metals

   Författare :Ola Widlund; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

3. 2. Modeling of magnetohydrodynamic turbulence

   Författare :Ola Widlund; KTH; []
   Nyckelord :turbulence model; magnetohydrodynamic; mhd; magnetohydrodynamic turbulence; computational fluid dynamics; continuous casting;

   Sammanfattning : Conventional one-point turbulence closures have beenextended with an additional transported scalar for modeling ofmagnetohydrodynamic (MHD) turbulence. The new scalar, α ,captures the length scale anisotropy and tendency towardstwo-dimensionality, which is characteristic feature of MHDturbulence, and allows accurate modeling of the Jouledissipation of turbulence. LÄS MER

4. 3. A Numerical Investigation on VOD Nozzle Jets

   Författare :Zhili Song; Pär Jönsson; Ola Widlund; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VOD; nozzle; jet; vaccum; CFD;

   Sammanfattning : The metallurgic process, Vacuum Oxygen Decarburization (VOD) process, is used for producing stainless steels with ultra-low carbon grades. In a VOD process, an oxygen lance is equipped with a De Laval nozzle which injects high speed oxygen gas. LÄS MER