4 documents found, page 1 of 1
Teknova: Calciner Problem
Allwright, David; Correia, Joaquim M.C.; Fromreide, Mads; Zefreh, Masoud Ghaderi; Kavallaris, Nikos; Lacey, Andrew; Manoylov, Anton; Ockendon, JohnExpressing the properties of the exit material as a function of the potential difference and mass flux (scraping rate) and solving the mechanical problem in order to obtain a velocity field to be fed into multi-physics numerical platforms.; Dept. Mathematics, Durham University, and the Smith Institute
Improved model of an electric calciner for carbon materials
Allwright, David; Correia, Joaquim M.C.; Fromreide, Mads; Zefreh, Masoud Ghaderi; Kavallaris, Nikos; Manoylov, Anton; Please, Colin; Rooney, CaoimbeTeknova have 2D steady-state models of the calciner but wish, in the long term, to have a 3D model that can also cover unsteady conditions, and can can model the loss of axisymmetry that someties occurs. Teknova also wish to understand the processes happening around the tip of the upper electrode, in particular the formation of a lip on it and the the shape of the empty region below it. The Study Group proposed...
Gas Flow Rates through Inert and Chemically Reactive Porous Beds
Baker, Jonathan; Champneys, Alan; Correia, Joaquim; Ceseri, Maurizio; Curtis, John; Hicks, Peter D.; Hinch, John; Lacey, Andrew; Lawn, HeatherThe study group was tasked to investigate: 1. how gas ows through irregularly shaped particles, and whether the Kozeny-Carman equation (relating the Kozeny-Carman constant K, porosity \phi and specific surface area S_k), could be improved to extend the usual spherical particle geometries to account for cylindrical, tetrahedral, ellipsoid and rhombic particle geometries; 2. the critical pressure for the collapse...
Gas flow rates through inert and chemically reactive porous beds
Baker, Jonathan; Champneys, Alan; Correia, Joaquim M.C.; Ceseri, Maurizio; Curtis, John; Hicks, Peter D.; Hinch, John; Lacey, Andrew; Lawn, HeatherThe Atomic Weapons Establishment is interested in the behaviour of highly reactive chemical beds, in order to produce more reliable explosives. To improve understanding of the reaction evolution and bed mechanics the study group investigated the experiments of Goveas (1997), which involved the reaction of small beds of potassium picrate particles. The study group developed a mechanistic model and used simplifie...