Blar i Fakultet for informasjonsteknologi og elektroteknikk (Uspesifisert) på forfatter "Tyvand, Peder A."
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A Non-normal-mode Marginal State of Convection in a Porous Box with Insulating End-Walls
Tyvand, Peder A.; Nøland, Jonas Kristiansen (Journal article; Peer reviewed, 2019)The 4th order Darcy-Benard eigenvalue problem for the onset of thermal convection in a 3D rectangular porous box is investigated. We start from a recent 2D model for a rectangle with hand-picked boundary conditions defying ... -
A Non-normal-Mode Marginal State of Convection in a Porous Rectangle
Tyvand, Peder A.; Nøland, Jonas Kristiansen; Storesletten, Leiv (Journal article; Peer reviewed, 2019)The fourth-order Darcy–Bénard eigenvalue problem for onset of thermal convection in a 2D rectangular porous box is investigated. The conventional type of solution has normal-mode dependency in at least one of the two spatial ... -
Onset of Convection in a Triangular Porous Prism with Robin-Type Thermal Wall Condition
Tyvand, Peder A.; Nøland, Jonas Kristiansen (Journal article; Peer reviewed, 2019)This paper investigates a peculiar case of thermal convection in a vertical porous prism with impermeable and partially conducting walls. We facilitate the analysis in the numerical finite-element environment alongside ... -
Oscillatory Non-normal-Mode Onset of Convection in a Porous Rectangle
Tyvand, Peder A.; Nøland, Jonas Kristiansen (Journal article; Peer reviewed, 2019)A special case of the fourth-order Darcy–Bénard problem in a two-dimensional (2D) rectangular porous box is investigated. The present eigenfunctions are of non-normal-mode type in the horizontal and vertical directions. ...