Dr Ingo Jahn

Lecturer in Mechanical Engineering

School of Mechanical and Mining Engineering
Faculty of Engineering, Architecture and Information Technology
i.jahn@uq.edu.au
+61 7 334 68733
0450 676 606

Overview

Ingo Jahn's research interests are radial inflow turbomachinery for advanced working fluids (supercritical Carbon Dioxide (sCO2), refrigerants) that allow more efficient power conversion; enabling technologies for efficient power conversion systems (gas film riding bearings and seals); and the design and optimisation of hypersonic vehicles and scramjet engines.

Ingo Jahn joined UQ in 2012 as a lecturer in Mechanical Engineering within the School of Mechanical and Mining Engineering. He obtained a Master of Engineering Degree from the University of Oxford, UK in 2003, which was followed by a DPhil at the Turbomachinery laboratory at the University of Oxford. Between 2007 and 2012 Dr. Jahn was working for Rolls-Royce plc in the United Kingdom as a Specialist in Advanced Seals and as Research Technology Leader for Oil Systems.

Since 2014 Ingo has been leading turbomachinery research at UQ with the aim of delivering sCO2 turbine technology for the Australian Solar Thermal Research Initiative (ASTRI). His research to deliver an small and efficient power conversion concept is integral to delivering environmentally friendly and low cost electricity to rural communities.

His research interests are:

  • Design, testing and optimisation of radial inflow turbines for small and medium power applications.
  • Power conversion system for concentrated solar thermal and waste heat recovery applications.
  • Design and optimisation of scramjet engines. Specifically the use of vortices to enhance fuel mixing and fuel trasnport, thus improving overall combustion efficiency.
  • Computational Design engineering. The development of automated design tools to imporve the vehicle design and subsystem integration in hypersonic vehicles.
  • Air-Riding thrust bearings and dry gas seals for operation with supercritical CO2

Research Interests

  • Gas Turbine Oil System
    Inefficient management of the oil flow within gearboxes and bearing chambers in gas turbines and other high speed turbo machinery can have multiple adverse effects such as increased heat generation, oil degradation, localised overheating and oil fires. To eliminate these effects, research in the following fields is ongoing: - Characterisation of physical effects controlling oil flow - Modelling of 2-phase flow under bearing chamber representative conditions - Analysis and characterisation of oil flow and structure interactions - Integration of oil flow and structural requirements
  • Advanced Seals / Air-Riding Seals
    Improving the performance and durability of air-air and air-oil seals is essential to increasing gas turbine efficiencies. This is due to the high secondary air system losses associated with conventional seals. These are due to increase with the arrival of even higher overall pressure ratio cycles. Air-riding seals are a technology that gives a step improvement in seal performance while at the same time ensuring long term performance retention. Key aspects of the seal development are: - Modelling of air-riding film - Analysis of unsteady operation - Investigate effects of misalignments and swash - Demonstrate air-riding seal operation in supercritical CO2
  • Hypersonic Propulsion
    The design of efficient scramjet engines is one of the major challenges in the field of hypersonics. To improve fuel mixing, combustion efficiency and thus overall thrust research is ongoing in the following areas: - Investigate interaction between stream-wise vortices and fuel jets - Optimize geometry of porthole fuel injectors - Study flow of liquid hydrocarbon fuel injection - Development of flow analysis and visualization techniques
  • System Design and Integration for Flight Vehicles
    The ability of a flight vehicle to complete a given task is a function of the fundamental design decisions, choice of control actuators, controller inputs and the interaction between these. By investigating these relationships and interactions and optimising the choices made during the design process, the optimum vehicle design for a given requirement can be defined. This goal will be attained through ongoing research in these fields: - System design and vehicle integration - Flight dynamic analysis - Inverse simulation of hypersonic vehicle dynamics - Design optimisation
  • Transverse Control Jets in Hypersonic Flow
    Transverse jets are an efficient way to control high speed and high altitude vehicles. Their key advantage is that no extra drag is created during straight flight when the jet is not used and that the control force acting on the vehicle can be magnified due to jet to free-stream interactions. - Experimental characterisation of jet to free-stream interaction - Modelling of Jet - Improving understanding of control force magnification - Further control force magnification through intentional interactions with surrounding structures (e.g. fences, wings)

Research Impacts

Supercritical Carbon Dioxide allows the development of highly efficient power conversion systems that have the potential to displace steam as the most common medium for power conversion systems. Especially at small scale supercritical Carbon Dioxide cycles allow the development of more effective power conversion than alternatives. This is due to high efficiency and due to high power densities that can be achieved with the supercritical Carbon Dioxide. Together this allows the deveopment of efficient and economical power conversion solutions.

Combining this cycle with concentrated solar and thermal storage systems or waste heat recovery applications is an enabler for efficient decentralised electricty production. This is a key requirement for the development of future energy networks with a high penetration of renewables.

Qualifications

  • Master of Engineering, Oxf.
  • Doctor of Philosophy, Oxf.

Publications

  • Jahn, Ingo H. J. (2014) Design approach for maximising contacting filament seal performance retention. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, OnlineFirst . doi:10.1177/0954406214541433

  • Forbes-Spyratos, S., Jahn, I. H., Preller, D. and Smart, M. (2014). Inverse simulation for hypersonic vehicle analysis. In: 19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference. 19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, Atlanta, GA, United States, (1-19). 16-20 June 2014. doi:10.2514/6.2014-2954

  • Jahn, Ingo H. J., Franceschini, Gervas, Owen, Andrew K. and Gillespie, David R. H. (2008). Experimental characterisation of the stiffness and leakage of a prototype leaf seal for turbine applications. In: Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air (GT2008). ASME Turbo Expo 2008, Berlin, Germany, (1657-1666). June 9-13, 2008. doi:10.1115/GT2008-51206

View all Publications

Supervision

  • Doctor Philosophy

  • Doctor Philosophy

  • Doctor Philosophy

View all Supervision

Available Projects

  • Final Year Thesis.

    Pre-requisites: MECH4480, MECH3410, CAD experience, MECH2305

    Tasks:

    • design of moving flat plate test rig. Including simpel CFD calcs to quantify loading. (These will be conducted using Eilmer)

    • manufacture of components. This will require programming CNC machines used in MECH2305

    • verify operation of test rig. (E.g. by bench top experiments)

    • time permitting, perform testing in USQ gun tunnel.

  • Final Year Thesis.

    Pre-requisites: MECH4480, MECH3410, MECH2700

    Tasks:

    • verify moving mesh implementation in Eilmer

    • numerically investigate the flow field surrounding 2-D and 3-D object pitching/rotating relative to the free-stream flow

    • validate against test cases from literature

    This is a follow up from Matthew Trudgian's thesis, which is available from the school webpage.

  • Final Year Thesis.

    Pre-requisites: MECH3410, CAD experience, design experience

    Tasks:

    • Propose a rear wing design for the UQ FSAE car. This should be designed, based on classical wing theory

    • Design and manufacture mounting mechanism.

    • Complete manufacture of wing by Feb/March 2015

    • Test Prototype wing on current car.

    • Verify operation and proceed to design 2nd wing for 2015 FSAE car.

    This is a follow up of Coonor Duxbury's, Heather McNeil thesis, which are available from the school webpage.

    Requires prior coordination with UQR.

    Requires Pre-semester start.

View all Available Projects

Publications

Featured Publications

  • Jahn, Ingo H. J. (2014) Design approach for maximising contacting filament seal performance retention. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, OnlineFirst . doi:10.1177/0954406214541433

  • Forbes-Spyratos, S., Jahn, I. H., Preller, D. and Smart, M. (2014). Inverse simulation for hypersonic vehicle analysis. In: 19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference. 19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, Atlanta, GA, United States, (1-19). 16-20 June 2014. doi:10.2514/6.2014-2954

  • Jahn, Ingo H. J., Franceschini, Gervas, Owen, Andrew K. and Gillespie, David R. H. (2008). Experimental characterisation of the stiffness and leakage of a prototype leaf seal for turbine applications. In: Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air (GT2008). ASME Turbo Expo 2008, Berlin, Germany, (1657-1666). June 9-13, 2008. doi:10.1115/GT2008-51206

Book

Journal Article

Conference Publication

  • Qin, Kan , Jacobs, Peter A., Keep, Joshua and Jahn, Ingo (2017). A three-dimensional fluid-structure-thermal simulation of bump-type foil thrust bearings. In: Proceedings of the 1st Global Power and Propulsion Forum. The 1st Global Power and Propulsion Forum, Zurich, Switzerland, (). 16-18 January 2017.

  • Llobet, Juan R., Gollan, Rowan J. and Jahn, Ingo H. (2017). Effect of Vortex-injection Interaction on Wall Heat Transfer in a Flat Plate and Fin Corner Geometry. In: Proceedings of the 8th Asia-Pacific International Symposium on Aerospace Technology (APISAT). Asia-Pacific International Symposium on Aerospace Technology, Toyama, Japan, (). 25-27 October 2016.

  • Swann, Phillip B., Russell, Hugh and Jahn, Ingo (2017). Rotating shaft thermal analysis for supercritical carbon dioxide radial inflow turbines. In: 15th International Energy Conversion Engineering Conference. AIAA Propulsion and Energy Forum and Exhibition, Atlanta, GA, United States, (). 10 - 12 July 2017. doi:10.2514/6.2017-4864

  • Forbes-Spyratos, Sholto O., Kearney, Michael P., Smart, Michael K. and Jahn, Ingo H. (2017). Trajectory design of a rocket-scramjet-rocket multi-stage launch system. In: 21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017. 21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017, Xiamen, China, (). 6 - 9 March 2017.

  • Russell, Hugh, Rowlands, Andrew, De Miranda Ventura, Carlos and Jahn, Ingo (2016). Design and testing process fora 7kw radial inflow refrigerant turbine at the University of Queensland. In: Proceedings of ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, Seoul, Korea, (). 13-17 June 2016.

  • Keep, J. A. and Jahn, I. J. (2016). Design method and performance comparison of plenum and volute delivery systems for radial inflow turbines. In: 20th Australasian Fluid Mechanics Conference. Australasian Fluid Mechanics Conference, Perth, Australia, (). 5-8 December 2016.

  • Keep, Joshua A., Head, Adam J. and Jahn, Ingo H. (2016). Design of an efficient space constrained diffuser for supercritical CO2 turbines. In: IOP Journal of Physics: Conference Series. NICFD 2016 for propulsion and power, Varenna, Italy, (). 20-21 October 2016. doi:10.1088/1742-6596/821/1/012026

  • Keep, Joshua A. and Jahn, Ingo H. (2016). Development of a space marching throughflow code for radial inflow turbines. In: ASME Turbo Expo 2016: Turbine Technical Conference and Exposition, Seoul, South Korea, (). 13-17 June 2016.

  • Qin, Kan, Jahn, Ingo and Jacobs, Peter (2016). Effect of operating conditions on the elasto-hydrodynamic performance of foil thrust bearings for supercritical CO2 cycles. In: Proceedings of ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, Seoul, South Korea, (). 13-17 June 2016. doi:10.1115/GT2016-56524

  • Moura, A. F., Wheatley, V., McIntyre, T. J. and Jahn, I. (2016). On the development of a Mach 10 scramjet engine for investigation of supersonic combustion regimes. In: The Proceedings of the 20th Australasian Fluid Mechanics Conference. 20th Australasian Fluid Mechanics Conference, Perth, Western Australia, (). 5-8 December 2016.

  • Zakariya, Mohd Fairuz and Jahn, Ingo H. J. (2016). Performance of supercritical CO2 dry gas seals near the critical point. In: Proceedings of ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. ASME Turbo Expo 2016, Seoul, South Korea, (56537.1-56537.10). June 13-17, 2016. doi:10.1115/GT2016-56537

  • Qin, K., Jahn, I. H. and Jacobs, P. A. (2016). Prediction of dynamic characteristics of foil thrust bearings using computational fluid dynamics. In: 20th Australasian Fluid Mechanics Conference. Australasian Fluid Mechanics Conference, Perth, WA, Australia, (). 5-8 December 2016.

  • Qi, Jianhui, Reddell, Thomas, Qin, Kan, Hooman, Kamel and Jahn, Ingo H. J. (2016). Supercritical CO2 radial turbine design performance as a function of turbine size parameters. In: Proceedings of ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, Seoul, South Korea, (58137.1-58137.14). June 13-17, 2016. doi:10.1115/GT2016-58137

  • Twomey, Braden, Nagy, Andras, Russell, Hugh, Rowlands, Andrew, Czapla, Jason, Singh, Rajinesh, Ventura, Carlos A de M and Jahn, Ingo (2016). The University of Queensland refrigerant and supercritical CO2 test loop. In: Proceedings of ASME Turbo Expo 2016: Power for Land, Sea and Air. ASME Turbo Expo 2016, Seoul, South Korea, (58110.1-58110.11). June 13-17, 2016. doi:10.1115/GT2016-58110

  • Farmer, N., Lederhose,, Olszewski, G., Jahn, I. and Heitzmann, M. (2015). Composites Training through Development of a Formula SAE Race Car. In: Australasian Composites Conference, Sanctuary Cove, QLD Australia, (). 21-23 April, 2015.

  • Ingo Jahn, Duniam, Sam and Veeraragavan, Ananthanarayanan (2015). Cooling issues for small-scale sCO2 powerplants. In: Kamel Hooman, Hal Gurgenci, Zhiqiang Guan, Yuanshen Lu and Manuel Lucas, Proceedings of the 17th IAHR International Conference on Cooling Tower and Heat Exchanger. IAHR International Conference on Cooling Tower and Heat, Gold Coast, QLD, Australia, (253-261). 7-11 September 2015.

  • Gomez, Juan Ramon Llobet, Jahn, Ingo H. and Gollan, Rowan (2015). Effect of Streamwise Vortices on Scramjets Porthole Injection Mixing. In: International Space Planes and Hypersonic Systems and Technologies Conferences. 20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, Glasgow, Scotland, (). 6-9 July 2015. doi:10.2514/6.2015-3597

  • Pekris, Michael J., Franceschini, Gervas, Jahn, Ingo H. J. and Gillespie, David R. H. (2015). Experimental investigation of a leaf seal prototype at engine-representative speeds and pressures. In: ASME Turbo Expo 2015: Turbine Technical Conference and Exposition (GT2015). ASME Turbo Expo 2015, Montreal, Canada, (). 15-19 June 2015. doi:10.1115/GT2015-43231

  • Pekris, Michael J., Nasti, Adele, Jahn, Ingo H. J. and Franceschini, Gervas (2015). High speed characterization of a prototype leaf seal on an advanced seal test facility. In: ASME Turbo Expo 2015: Turbine Technical Conference and Exposition (GT2015). ASME Turbo Expo 2015: Power for Land, Sea and Air, Montreal, Canada, (). 15-19 June 2015. doi:10.1115/GT2015-43465

  • Sadafi, M. H., Sara, G. R., Maria Rosaria, V., Jeroen, V. B., Jahn, Ingo, Jean-Marie, B. and Hooman, Kamel (2015). On the influence of low-power laser source on the evaporation of single droplets: experimental and numerical approaches. In: 7th International Exergy, Energy and Environment Symposium. International Exergy, Energy and Environment Symposium, Valenciennes, France, (). 27-30 April 2015.

  • Alkhedhair, Abdullah, Guan, Zhiqiang, Jahn, Ingo and Gurgenci, Hal (2015). Parametric study on spray cooling systems in natural draft dry cooling towers with a new nozzle representation approach. In: Kamel Hooman, Hal Gurgenci, Zhiqiang Guan, Yuanshen Lu and Manuel Lucas, Proceedings of the 17th IAHR International Conference on Cooling Tower and Heat Exchanger. IAHR International Conference on Cooling Tower and Heat, Gold Coast, QLD, Australia, (1-12). 7-11 September 2015.

  • Sadafi, M. H., Jahn, I., Stilgoe, A. B. and Hooman, K. (2014). An investigation of evaporation from single saline water droplets: experimental and theoretical approaches. In: Harun Chowdhury and Firoz Alam, Proceedings of the 19th Australasian Fluid Mechanics Conference. 19th Australasian Fluid Mechanics Conference, Melbourne, VIC, Australia, (216.1-216.4). 8-11 December 2014.

  • Van Puyenbroeck, T., Brieschenk, S. and Jahn, I. H. (2014). Development of a 2-phase flow nozzle for fine droplet generation. In: Harun Chowdhury and Firoz Alam, Proceedings of the 19th Australasian Fluid Mechanics Conference. 19th Australasian Fluid Mechanics Conference, Melbourne, VIC, Australia, (422.1-422.4). 8-11 December 2014.

  • Alkhedhair, A., Guan, Z., Gurgenci, H., Jahn, I. and He, S. (2014). Experimental study on inlet air cooling by water spray for natural draft dry cooling towers enhancement. In: Harun Chowdhury and Firoz Alam, Proceedings of the 19th Australasian Fluid Mechanics Conference. 19th Australasian Fluid Mechanics Conference, Melbourne, VIC, Australia, (71.1-71.4). 8-11 December 2014.

  • Forbes-Spyratos, S., Jahn, I. H., Preller, D. and Smart, M. (2014). Inverse simulation for hypersonic vehicle analysis. In: 19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference. 19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, Atlanta, GA, United States, (1-19). 16-20 June 2014. doi:10.2514/6.2014-2954

  • Qin, K., Jahn, I. H. and Jacobs, P. A. (2014). Validation of a three-dimensional CFD analysis of foil bearings with supercritical CO2. In: Harun Chowdhury and Firoz Alam, Proceedings of the 19th Australasian Fluid Mechanics Conference. 19th Australasian Fluid Mechanics Conference, Melbourne, VIC, Australia, (136.1-136.4). 8-11 December 2014.

  • Llobet, J. R., Barth, J. E. and Jahn, I. H. (2014). Vortex tracking algorithm for hypersonic flow in scramjets. In: Harun Chowdhury and Firoz Alam, Proceedings of the 19th Australasian Fluid Mechanics Conference. 19th Australasian Fluid Mechanics Conference, Melbourne, VIC, Australia, (525.1-525.4). 8-11 December 2014.

  • Jahn, Ingo H. J., Gillespie, David and Cooper, Paul (2013). Hydrodynamic air-riding in leaf seals. In: Proceedings of ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. GT2013: Heat Transfer. ASME Turbo Expo 2013: Turbine Technical Conference and Exposition, San Antonio, TX, USA, (1-10). 3-7 June, 2013. doi:10.1115/GT2013-95585

  • Jahn, Ingo H. J. (2013). Maximizing contacting filament seal performance retention. In: Proceedings of ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. GT2013: Heat Transfer. ASME Turbo Expo 2013: Turbine Technical Conference and Exposition, San Antonio, TX, USA, (1-12). 3-7 June, 2013. doi:10.1115/GT2013-94261

  • Alkhedhair, A, Gurgenci, H., Jahn, I. and Guan, Z. (2013). Numerical simulation of water injection for pre-cooling inlet air in dry cooling towers. In: Proceedings of the 16th IAHR Cooling Tower and Air-cooled Heat Exchanger Conference. 16th IAHR Cooling Tower and Air-cooled Heat Exchanger Conference (IAHR 16), Minsk, Belarus, (1-16). 30 September-2 October 2013.

  • Franceschini, Gervas, Jahn, Ingo H. J., Owen, Andrew K., Jones, Terry V. and Gillespie, David R. H . (2012). Improved understanding of negative stiffness in filament seals. In: Proceedings of ASME Turbo Expo 2012: GT2012. ASME Turbo Expo 2012: Power for Land, Sea and Air, Copenhagen, Denmark, (1-9). 11-15 June 2012.

  • Jahn, I. H. (2012). Shear driven films inside cylinders. In: P. A. Brandner and B. W. Pearce, Proceedings of the 18th Australasian Fluid Mechanics Conference. 18th Australasian Fluid Mechanics Conference, Launceston, Australia, (). 3 - 7 December 2012.

  • Jahn, Ingo H. J., Franceschini, Gervas, Owen, Andrew K. and Gillespie, David R. H. (2011). Negative stiffness in gas turbine leaf seals. In: Proceedings of ASME Turbo Expo 2011. ASME Turbo Expo (ASME TE, 2011), Vancouver, BC, Canada, (993-998). 6-10 June 2011. doi:10.1115/GT2011-46483

  • Jahn, Ingo H. J., Franceschini, Gervas, Owen, Andrew K. and Gillespie, David R. H. (2008). Experimental characterisation of the stiffness and leakage of a prototype leaf seal for turbine applications. In: Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air (GT2008). ASME Turbo Expo 2008, Berlin, Germany, (1657-1666). June 9-13, 2008. doi:10.1115/GT2008-51206

Other Outputs

Grants (Administered at UQ)

PhD and MPhil Supervision

Current Supervision

  • Doctor Philosophy — Principal Advisor

    Other advisors:

  • Doctor Philosophy — Principal Advisor

  • Doctor Philosophy — Principal Advisor

    Other advisors:

  • Doctor Philosophy — Principal Advisor

  • Doctor Philosophy — Principal Advisor

  • Doctor Philosophy — Principal Advisor

  • Doctor Philosophy — Principal Advisor

  • Doctor Philosophy — Principal Advisor

  • Doctor Philosophy — Associate Advisor

  • Doctor Philosophy — Associate Advisor

    Other advisors:

Possible Research Projects

Note for students: The possible research projects listed on this page may not be comprehensive or up to date. Always feel free to contact the staff for more information, and also with your own research ideas.

  • Final Year Thesis.

    Pre-requisites: MECH4480, MECH3410, CAD experience, MECH2305

    Tasks:

    • design of moving flat plate test rig. Including simpel CFD calcs to quantify loading. (These will be conducted using Eilmer)

    • manufacture of components. This will require programming CNC machines used in MECH2305

    • verify operation of test rig. (E.g. by bench top experiments)

    • time permitting, perform testing in USQ gun tunnel.

  • Final Year Thesis.

    Pre-requisites: MECH4480, MECH3410, MECH2700

    Tasks:

    • verify moving mesh implementation in Eilmer

    • numerically investigate the flow field surrounding 2-D and 3-D object pitching/rotating relative to the free-stream flow

    • validate against test cases from literature

    This is a follow up from Matthew Trudgian's thesis, which is available from the school webpage.

  • Final Year Thesis.

    Pre-requisites: MECH3410, CAD experience, design experience

    Tasks:

    • Propose a rear wing design for the UQ FSAE car. This should be designed, based on classical wing theory

    • Design and manufacture mounting mechanism.

    • Complete manufacture of wing by Feb/March 2015

    • Test Prototype wing on current car.

    • Verify operation and proceed to design 2nd wing for 2015 FSAE car.

    This is a follow up of Coonor Duxbury's, Heather McNeil thesis, which are available from the school webpage.

    Requires prior coordination with UQR.

    Requires Pre-semester start.

  • Final Year Thesis.

    Pre-requisites: MECH3410, MECH2700, MECH4480 or MECH3750

    Tasks:

    • Develop 2-D Finite Volume code, designed for simualtion of flow in flat channels (hieght < 100micron)

    • Code uses momentum source/sink terms to account for viscous effects (friction)

    • Verification and Validation against dat from literature.

    Code will be programmed in python, some programming knowledge is essential.

  • Research higher Degree or Final year Thesis

    Porthole injection through circular holes is a method for delivering fuel to scramjet combustors. The first step of this project is to characterise how single porthole injectors interact with the flow structures present in the 2D and 3D inlet and specifically how the jet-vortex and jet-shockwave interaction enhance fuel mixing performance. The second step is to extend the work to multiple injector arrangements (e.g. axially staged) and to identify injector arrangements that lead to improved fuel mixing and scramjet combustor performance. For all cases the results will be compared to corresponding computer simulations.

    Tasks:

    • Simulation of free-stream flow - jet interaction using Eilmer

    • Investigate range of jet orifice geometries with respect to optimising jet performance (maximum penetration, maximum mixing, minimum enthalpy increase)

    This is a follow up from Antonia Flocco's thesis, which is available from the school webpage.

  • Research higher Degree or Final year Thesis

    Tasks:

    • investigate methods to perform molecualr flow-tagging of gases typically present in hypersonic flows

    • device proof-of-concept experiment

    • test method in Drummond tunnel at UQ.

  • Final year Thesis

    Tasks:

    • Review experimentation data and simulation data completed at UQ for 2-phase flow injectors/vaporizer.

    • Design a 2nd generation nozzle to enhance jet break-up performance

    • Conduct experimental characterisation tests

    This is a follow up of Sean Krisanski's and Thomas van Puyenbroeck theses, which are available from the school webpage.

  • Final Year ThesisTasks:

    • Continue development of liquid injection CFD model and run simulations for supersonic cross flow
    • Simualte flow in OpenFOAM

    This is a follow on from Jake Vanderline's thesis, which is available from the school webpage.