Sam Mallinson

 Industrial Engineering Research Fellow, University of New South Wales, Australia

 

 Expertise: Inkjet Physics, Bubble Generation, Droplet Ejection, Print-zone aerodynamics, evaporation and condensation, capillarity and wetting, ink-media interaction, ink mixture material properties, micro-electro-mechanical systems (MEMS), and microfluidics

 Field of Research: Mechanical Engineering, Fluid Mechanics, Heat Transfer,  Structural Mechanics

 Email: s.mallinson@unsw.edu.au

Dr. Sam Mallinson is an Industrial Engineering Research Fellow in the School of Mechanical and Manufacturing Engineering. He has significant expertise in computational modelling, an in particular, use of open source computer-aided engineering tools, such as OpenFOAM, FreeCAD, Gmsh, FreeFem++, SurfaceEvolver paraview and python. He is also an experienced user of the ANSYS suite of tools.

He can propose the following topics for thesis and HDR students:

1. Aerosol capture
Many industrial, medical and biological processes produce highly mobile aerosols which can have deleterious effects. For example: in inkjet printing, stray aerosols can accumulate on machine internals and drip, resulting in print defects; dental operations produce highly mobile aerosols which make sophisticated personal protective equipment necessary
when operating on at-risk patients; human sneezing can increase the spread of viruses. This project has a number of aspects: literature review of biological (eg dental) aerosol size and velocity distribution; numerical simulation of generic particle-laden jets, including generic particle extraction methods (what kinds of extraction is required for given ranges of aerosol size and velocity distributions?); experimental testing of aerosol generator: characterizing size and velocity distribution; design of aerosol extraction unit for attachment to dental drills


2. Simulating droplet deposition for 3D printing
3D printing (aka additive manufacturing) holds great promise for rapid prototyping and component manufacture. In this project, the student will investigate the fluid mechanics of droplet deposition using CFD simulations.
Reference: https://www.researchgate.net/publication/328418662_Simulation_of_Droplet_Impact_and_Spreading_using_a_Simple_Dynamic_Contact_Angle_Model


3. Conjugate heat transfer modelling
Cooling of hot components by fluid flow is widely used in a number of industries. In this project, the student will use simulation codes to model the conjugate heat transfer (ie. fluid flow plus heat) in one or more simple situations of industrial relevance, for example, flow over a heated block in a channel (mimicking electronic cooling) and flow over a
backward facing step with downstream heated wall (which is a proxy for flow in an inkjet printhead).
Reference: https://www.researchgate.net/publication/334028691_Conjugate_Heat_Transfer_in_Thermal_Inkjet_Printheads


4. Experimental and numerical investigations of thermal inkjet droplet ejection
Thermal inkjet printers generate droplets by rapidly raising the temperature of a thin metallic film adjacent to a supply of ink. This causes the ink to flash boil, and the bubble thus formed forces the ink through a nozzle, forming a droplet. In this project, students will investigate a commercial inkjet printing system: experimental testing will consist of flow visualization using high speed cameras; numerical simulations will be performed using the open-source code OpenFOAM. Post-processing and analysis will use Python.
Reference: https://www.researchgate.net/publication/334028693_Numerical_Simulation_of_Thermal_Inkjet_Droplet_Ejection

Journal Articles

Mallinson SG; Mudford NR; Gai SL, 2020, 'Leading-edge bluntness effects in hypervelocity flat plate flow', Physics of Fluids, vol. 32, pp. 046106 - 046106, http://dx.doi.org/10.1063/1.5138205

McBain GD, 2019, 'Three ways to compute multiport inertance', ANZIAM Journal, vol. 60, pp. C140 - C155, http://dx.doi.org/10.21914/anziamj.v60i0.14058

Hillier R; Boyce RR; Creighton SA; Fiala A; Jackson AP; Mallinson SG; Soltani S; Williams S, 2013, 'Development of some hypersonic benchmark flows using CFD and experiment', Shock Waves, vol. 12, pp. 375 - 384, http://dx.doi.org/10.1007/s00193-003-0179-0

Fiala A; Hillier R; Mallinson SG; Wijesinghe HS, 2006, 'Heat transfer measurement of turbulent spots in a hypersonic blunt-body boundary layer', Journal of Fluid Mechanics, vol. 555, pp. 81 - 111, http://dx.doi.org/10.1017/S0022112006009396

Mallinson SG; Reizes JA; Hong G; Westbury PS, 2004, 'Analysis of hot-wire anemometry data obtained in a synthetic jet flow', Experimental Thermal and Fluid Science, vol. 28, pp. 265 - 272, http://dx.doi.org/10.1016/j.expthermflusci.2003.05.001

Kwok CY; Mallinson SG; Reizes JA, 2003, 'Numerical Simulation of Micro-Fabricated Zero Mass-Flux Jet Actuators', Sensors and Actuators, vol. 105, pp. 229 - 236, http://dx.doi.org/10.1016/S0924-4247(03)00204-8

Mallinson SG; Reizes JA; Hillier R, 2001, 'The Interaction between a Compressible Synthetic Jet and a Laminar Hypersonic Boundary Layer', Flow, Turbulence and Combustion, vol. 66, pp. 1 - 21, http://dx.doi.org/10.1023/A:1011468910521

Mallinson SG; Reizes JA; Hong G, 2001, 'An experimental and numerical study of synthetic jet flow', Aeronautical Journal, vol. 105, pp. 41 - 49, http://dx.doi.org/10.1017/S0001924000095968

Mallinson SG; Hillier R; Jackson AP; Kirk DC; Soltani S; Zanchetta M, 2000, 'Gun tunnel flow calibration: Defining input conditions for hypersonic flow computations', Shock Waves, vol. 10, pp. 313 - 322, http://dx.doi.org/10.1007/s001930000064

Palma PC; Mallinson SG; O'Byrne SB; Danehy PM; Hillier R, 2000, 'Temperature measurements in a hypersonic boundary layer using planar laser-induced fluorescence', AIAA journal, vol. 38, pp. 1769 - 1772, http://dx.doi.org/10.2514/2.1172

Mallinson SG; Gai SL; Mudford NR, 1997, 'The boundary layer on a flat plate in hypervelocity flow (vol 100, pg 135, 1996)', AERONAUTICAL JOURNAL, vol. 101, pp. 276 - 276, http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1997XQ87000006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=891bb5ab6ba270e68a29b250adbe88d1

Mallison SG; Gai SL; Mudford NR, 1997, 'An experimental Investigation of Hypervelocity Flow in a Conical Nozzle', Journal of Applied Science Research, vol. 57, pp. 81 - 93

Mallison SG; Gai SL; Mudford NR, 1997, 'Establishment of Steady Separated Flow over a Compression Corner in a Free-Piston Shock Tunnel', Shock Waves, vol. 7, pp. 249 - 253, http://dx.doi.org/10.1007/s001930050080

Mallison SG; Gai SL; Mudford NR, 1997, 'The interaction of a shock wave with a laminar boundary layer at a compression corner in high-enthalpy flows including real gas effects.', Journal of Fluid Mechanics, vol. 342, pp. 1 - 35, http://dx.doi.org/10.1017/S0022112097005673

Mallinson SG; Gai SL; Mudford NR, 1996, 'An experimental investigation of hypervelocity flow in a conical nozzle', Flow, Turbulence and Combustion, vol. 57, pp. 81 - 93

1996, 'Leading-edge bluntness effects in high enthalpy, hypersonic compression corner flow', AIAA Journal, vol. 34, pp. 2284 - 2290, http://dx.doi.org/10.2514/3.13392

Mallinson SG; Gai SL; Mudford NR, 1996, 'The boundary layer on a flat plate in hupervelocity flow', Aeronautical Journal, vol. 100, pp. 135 - 141

Mallinson SG; Gai SL; Mudford NR, 1996, 'Upstream influence and peak heating in hypervelcotiy shock wave/Boundary layer interaction', Journal of Propulsion and Power, vol. 12, pp. 984 - 990, http://dx.doi.org/10.2514/3.24131

 
 

Conference Papers

McBain GD; Mallinson SG, 2018, 'Impulsively generated incompressible two-phase flow and the ASAI thermal ink-jet model', in Proceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018

McBain GD; Mallinson SG, 2018, 'Impulsively generated incompressible two-phase flow and the ASAI thermal ink-jet model', in Proceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018

Mallinson SG; Barber TJ; Yeoh GH; McBain GD, 2018, 'Simulation of droplet impact and spreading using a simple dynamic contact angle model', in Proceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018

 

Mallinson SG; Barber TJ; Yeoh GH; McBain GD, 2018, 'Simulation of droplet impact and spreading using a simple dynamic contact angle model', in Proceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018

 

Mallinson SG; McBain GD; Horrocks GD; North AJ; O’Mahony AP; Reichl PJ; Myers SJ; Miller JJ; Powell B; Hess J; Secker DR; Palma PC, 2016, 'Suppressing tiger stripes: Taming flow oscillations to improve print quality', in Proceedings of the 20th Australasian Fluid Mechanics Conference, AFMC 2016

 

Mallinson SG; McBain GD; Horrocks GD, 2016, 'Viscosity and surface tension of aqueous mixtures', in Proceedings of the 20th Australasian Fluid Mechanics Conference, AFMC 2016

 

Lee C; Hong G; Mallinson SG, 2004, 'Influence of synthetic jet location on boundary layer separation control', in Proceedings of SPIE - The International Society for Optical Engineering, pp. 230 - 239, http://dx.doi.org/10.1117/12.523270

 

Mallinson SG; Johnson G; Gaston M; Hong G, 2004, 'Three dimensional numerical simulations of synthetic jet actuator flows in a microchannel', in Proceedings of SPIE - The International Society for Optical Engineering, pp. 341 - 350, http://dx.doi.org/10.1117/12.521732

 

Lee C; Hong G; Ha QP; Mallinson SG, 2003, 'A piezoelectrically actuated micro synthetic jet for active flow control', in Sensors and Actuators, A: Physical, pp. 168 - 174, http://dx.doi.org/10.1016/S0924-4247(03)00267-X

 

Hong G; Lee C; Ha QP; Mack ANF; Mallinson SG, 2002, 'Effectiveness of synthetic jets enhanced by instability of Tollmien-Schlichting waves', in 1st Flow Control Conference

Mallinson S; Reizes J; Hong G; Haga H, 2000, 'The operation and application of synthetic jet actuators', in Fluids 2000 Conference and Exhibit, American Institute of Aeronautics and Astronautics, presented at Fluids 2000 Conference and Exhibit, http://dx.doi.org/10.2514/6.2000-2402

 

Mallinson SG; Reizes JA; Hong G; Buttini M, 1999, 'Synthetic jet actuators for flow control', in Proceedings of SPIE - The International Society for Optical Engineering, pp. 146 - 156

 

Hong G; Dartnall WJ; Mallinson SG, 1999, 'Preliminary analysis of a long stroke natural gas engine based on LSRM', in SAE Technical Papers, http://dx.doi.org/10.4271/1999-01-2895

 

Mallinson SG; Hong G; Reizes JA, 1999, 'Some characteristics of synthetic jets', in 30th Fluid Dynamics Conference

 

Mallinson SG; Hillier R, 1998, 'A combined experimental-numerical study of heat transfer in turbulent hypersonic flow', in Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998, pp. 55 - 58

 

Horrocks GD; Reizes JA; Mallinson SG, 1998, 'Numerical study of flow in a rotating shock tube', in Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998, pp. 563 - 566

 

Palma PC; Mallinson SG; O'Byrne SO; Danehy PM, 1998, 'Planar laser-induced fluorescence thermometry in a hypersonic boundary layer flow', in Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998, pp. 559 - 562

 

Mallinson S; Hillier R; Mallinson S; Hillier R; Zanchetta M; Soltani S; Kirk D; Zanchetta M; Soltani S; Kirk D, 1997, 'An experimental and numerical study of hypersonic turbulent boundary layer flows', in 15th Applied Aerodynamics Conference, American Institute of Aeronautics and Astronautics, presented at 15th Applied Aerodynamics Conference, http://dx.doi.org/10.2514/6.1997-2290

 

Mallinson SG; Gai SL; Mudford NR, 1995, 'High Enthalpy hypersonic compression corner flow', in AIAA American Institute of Aeronautics and Astronautics Journal, American Inst Aeronaut Astronaut, Reston, VA, USA, pp. 1130 - 1137, presented at AIAA Aerospace Sciences Meeting, Nevada, 11 January 1995 - 14 January 1995, http://dx.doi.org/10.2514/3.13203

 

Mallinson SG; Gait SL; Mudford NR, 1995, 'High enthalpy, hypersonic compression corner flow', in 33rd Aerospace Sciences Meeting and Exhibit, http://dx.doi.org/10.2514/6.1995-155

 

MALLINSON SG; GAI SL; MUDFORD NR, 1992, 'LAMINAR FLOWS OF HIGH ENTHALPY AIR IN A COMPRESSION CORNER', in Davis MR; Walker GJ (ed.), ELEVENTH AUSTRALASIAN FLUID MECHANICS CONFERENCE, VOLS 1 AND 2, UNIVERSITY TASMANIA, UNIV TASMANIA, HOBART, AUSTRALIA, pp. 275 - 278, presented at 11th Australasian Fluid Mechanics Conference, UNIV TASMANIA, HOBART, AUSTRALIA, 14 December 1992 - 18 December 1992, http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1992BB94T00066&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=891bb5ab6ba270e68a29b250adbe88d1

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