Search Results - "Stitt, Hugh"

Discrete Element Method (DEM) for Industrial Applications: Comments on Calibration and Validation for the Modelling of Cylindrical Pellets by Marigo, Michele, Stitt, Edmund Hugh

“…As a consequence of increasing computer power and more readily useable commercial and open source codes, Discrete Element Method (DEM) is becoming widely used…”
Get full text

Use of acoustic emission in combination with machine learning: monitoring of gas–liquid mixing in stirred tanks by Forte, Giuseppe, Alberini, Federico, Simmons, Mark, Stitt, Hugh E.

“…Operations involving gas–liquid agitated vessels are common in the biochemical and chemical industry; ensuring good contact between the two phases is essential…”
Get full text

Tunable gold catalysts for selective hydrocarbon oxidation under mild conditions by Griffin, Ken, Xu, Yi-Jun, Landon, Philip, Stitt, E. Hugh, Kiely, Christopher J, McMorn, Paul, Johnston, Peter, Enache, Dan I, Attard, Gary A, Jenkins, Patrick, Carley, Albert F, King, Frank, Hutchings, Graham J, Hughes, Mathew D

“…Oxidation is an important method for the synthesis of chemical intermediates in the manufacture of high-tonnage commodities, high-value fine chemicals,…”
Get full text

Comment on the paper “Improving the precision of solids velocity measurement in gas–solid fluidized beds with a hybrid machine learning model” by Hongliang Xiao, Adefarati Oloruntoba, Xiwei Ke, Kaixuan Gao, Linlin Duan, Cenfan Liu, Yongmin Zhang, Junwu Wang: Chemical Engineering Science; 285 (2024), 119579 by Jackson, Carl, Hugh Stitt, E.

“…The original paper reports that by stacking two ML regression models of R2 in the order of 20 % a combined model with an R2 of 90 % is obtained. Given that the…”
Get full text

Packing simulations of complex-shaped rigid particles using FDEM: An application to catalyst pellets by Farsi, Ado, Xiang, Jiansheng, Latham, John-Paul, Carlsson, Mikeal, Stitt, Hugh, Marigo, Michele

“…A new component of the combined finite-discrete element method (FDEM) is employed to estimate the effects of geometrical features, friction and energy…”
Get full text

Morphological transformations during drying of surfactant-nanofluid droplets by Osman, Abdulkadir, Shahidzadeh, Noushine, Stitt, Hugh, Shokri, Nima

“…The effect of surfactants with different chain length on the drying dynamics of nanosized dispersion droplets and on the final morphology of the grains formed…”
Get full text

Validation of a Discrete Element Method (DEM) Model of the Grinding Media Dynamics within an Attritor Mill Using Positron Emission Particle Tracking (PEPT) Measurements by Daraio, Domenico, Villoria, Jose, Ingram, Andrew, Alexiadis, Alessio, Hugh Stitt, E., Marigo, Michele

“…Positron emission particle tracking (PEPT) was used to investigate the grinding media dynamics in a laboratory-scale attritor mill in the absence of powder…”
Get full text

Assessing Blending of Non‐Newtonian Fluids in Static Mixers by Planar Laser‐Induced Fluorescence and Electrical Resistance Tomography by Forte, Giuseppe, Albano, Andrea, Simmons, Mark J. H., Stitt, Hugh E., Brunazzi, Elisabetta, Alberini, Federico

“…Planar laser‐induced fluorescence (PLIF) and electrical resistance tomography (ERT) were applied simultaneously to monitor the mixing performance of a KM…”
Get full text

Kinetic modelling of thermal processes using a modified Sestak-Berggren equation by Gibson, Rebecca L., Simmons, Mark J.H., Hugh Stitt, E., West, John, Wilkinson, Sam K., Gallen, Robert W.

“…•Simultaneous fitting of multiple thermal events without prior peak discretization.•Akaike weights used to determine statistically relevant number of thermal…”
Get full text

3D CFD simulations of steam reforming with resolved intraparticle reaction and gradients by Dixon, Anthony G., Ertan Taskin, M., Hugh Stitt, E., Nijemeisland, Michiel

“…Computational fluid dynamics (CFD) simulations are reported for flow, diffusion, reaction and heat transfer in a 120 ∘ segment of an N = 4 packed tube for the…”
Get full text

Catalyst design by CFD for heat transfer and reaction in steam reforming by Nijemeisland, Michiel, Dixon, Anthony G., Hugh Stitt, E.

“…A comparative study was made of the influence on heat transfer performance in the near-wall region, of internal voids in cylindrical particles, in a steam…”
Get full text

Comparison of CFD simulations to experiment under methane steam reforming reacting conditions by Behnam, Mohsen, Dixon, Anthony G, Wright, Paul M, Nijemeisland, Michiel, Stitt, E. Hugh

“…The highly endothermic commercial methane steam reforming (MSR) reaction was studied experimentally in a single-pellet-string fixed bed reactor. The…”
Get full text

Deactivation and regeneration of ruthenium on silica in the liquid-phase hydrogenation of butan-2-one by Manyar, Haresh G., Weber, Daniel, Daly, Helen, Thompson, Jillian M., Rooney, David W., Gladden, Lynn F., Hugh Stitt, E., Jose Delgado, J., Bernal, Serafin, Hardacre, Christopher

“…Deactivation of a Ru/SiO 2 catalyst for butan-2-one hydrogenation in water has been found to be associated with the formation of Ru(OH) x ; however, this…”
Get full text

CFD Method To Couple Three-Dimensional Transport and Reaction inside Catalyst Particles to the Fixed Bed Flow Field by Dixon, Anthony G, Taskin, M. Ertan, Nijemeisland, Michiel, Stitt, E. Hugh

“…A new method is presented to couple the fluid flow in a fixed bed to the transport and reaction inside a catalyst particle, using computational fluid dynamics…”
Get full text

A comparison of contact angle measurement techniques applied to highly porous catalyst supports by Nowak, Emilia, Combes, Gary, Stitt, E. Hugh, Pacek, Andrzej W.

“…The wettability of porous powders is typically described by the solid/liquid contact angle and finds importance in the fields of catalysis, pharmaceuticals and…”
Get full text

Systematic mesh development for 3D CFD simulation of fixed beds: Single sphere study by Dixon, Anthony G., Ertan Taskin, M., Nijemeisland, Michiel, Stitt, E. Hugh

“…To develop and validate meshes for computational fluid dynamics (CFD) simulations of transport in fixed beds, a single particle is often used as a test case…”
Get full text

Measuring gas hold‐up in gas–liquid/gas–solid–liquid stirred tanks with an electrical resistance tomography linear probe by Forte, Giuseppe, Alberini, Federico, Simmons, Mark J. H., Stitt, E. Hugh

“…An electrical resistance tomography (ERT) linear probe was used to measure gas hold‐up in a two‐phase (gas–liquid) and three phase (gas–solid–liquid)…”
Get full text

CFD Study of the Influence of Catalyst Particle Design on Steam Reforming Reaction Heat Effects in Narrow Packed Tubes by Taskin, M. Ertan, Dixon, Anthony G, Nijemeisland, Michiel, Stitt, E. Hugh

“…The heat effects of methane steam reforming reactions were simulated in a narrow packed tube using computational fluid dynamics (CFD) with heat sinks in the…”
Get full text

Enhanced selective glycerol oxidation in multiphase structured reactors by Pollington, Stephen D., Enache, Dan I., Landon, Philip, Meenakshisundaram, Sankar, Dimitratos, Nikolaos, Wagland, Alison, Hutchings, Graham J., Stitt, E. Hugh

“…Gold catalysis has potential for multiphase oxidation using molecular oxygen but hitherto has been evaluated only in batch autoclaves. The use of continuous…”
Get full text

Direct Comparison of a Trickle Bed and a Monolith for Hydrogenation of Pyrolysis Gasoline by Enache, Dan I, Landon, Philip, Lok, C. Martin, Pollington, Stephen D, Stitt, E. Hugh

“…The applicability of a monolith system to a retrofit application for the hydrogenation of pyrolysis gasoline (Pygas) is evaluated. A direct comparison between…”
Get full text