Search for dissertations about: "shervin"

Showing result 1 - 5 of 16 swedish dissertations containing the word shervin.

  2. 1. Transitional and turbulent flow in porous media

    Author : Shervin Khayamyan; Carl-Erik Grip; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Abstract : Fluid flow through porous media takes place in many natural processes such as ground water flows, capillary flows in plants and flow in human organs and muscles. It is also of outmost importance to have knowledge of this flow in a number of industrial processes such as paper making, making of fibre boards, composites manufacturing, filtering, forming and sintering of iron ore pellets and drying and impregnation of wood. READ MORE

  4. 2. Turbulent and Transitional Flow in Porous Media An Experimental Investigation

    Author : Shervin Khayamyan; Wook Ryol Hwang; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Abstract : Fluid flow through porous media takes place in many natural processes such as ground water flows, capillary flows in plants and flow in human organs and muscles. It is also of outmost importance to have knowledge of this flow in a number of industrial processes such as paper making, making of fiber boards, composites manufacturing, filtering, forming and sintering of iron ore pellets and drying and impregnation of wood. READ MORE

  5. 3. Cognitive behavioral therapy for children and adolescents with dental phobia

    Author : Shervin Shahnavaz; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Background: Dental phobia is a disabling and clinically significant fear that interferes with the dental care necessary for a child’s or adolescent’s well-being. In fact, the definition of oral health in children and adolescents stresses, not only sound and well-functioning dental and oral structures, but also an absence of dental fear and anxiety. READ MORE

  6. 4. Analysis and control of transitional shear flows using global modes

    Author : Shervin Bagheri; Dan Henningson; Alessandro Bottaro; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluid mechanics; flow control; hydrodynamic stability; global modes; jet in crossflow; flat-plate boundary layer; laminar-turbulent transition; Arnoldi method; Koopman modes; balanced truncation; direct numerical simulations.; Fluid mechanics; Strömningsmekanik;

    Abstract : In this thesis direct numerical simulations are used to investigate two phenomenain shear flows: laminar-turbulent transition over a flat plate and periodicvortex shedding induced by a jet in cross flow. The emphasis is on understanding and controlling the flow dynamics using tools from dynamical systems and control theory. READ MORE

  7. 5. Stability analysis and control design of spatially developing flows

    Author : Shervin Bagheri; Dan Henningson; Martin Berggren; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Global modes; transient growth; model reduction; feedback control; Fluid mechanics; Strömningsmekanik;

    Abstract : Methods in hydrodynamic stability, systems and control theory are applied to spatially developing flows, where the flow is not required to vary slowly in the streamwise direction. A substantial part of the thesis presents a theoretical framework for the stability analysis, input-output behavior, model reduction and control design for fluid dynamical systems using examples on the linear complex Ginzburg-Landau equation. READ MORE