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Faculty of Engineering
 

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Kathy Johnson

Associate Professor, Faculty of Engineering

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Biography

Following her graduation from Manchester University with a BSc in Mechanical Engineering Kathy (Simmons) worked for Thorn EMI Flow Measurement (subsequently Schlumberger Flow Measurement) for 3 years as a research engineer and senior research engineer developing a new domestic gas meter based around a fluidic oscillator. Following a career break when her children were small, Kathy undertook a PhD at Nottingham University, graduating in 1998 and progressing to a post-doctoral position in the newly formed Rolls Royce University Technology Centre in Gas Turbine Transmissions where she developed CFD modelling of an aeroengine HPIP bearing chamber.

Kathy became a member of academic staff at Nottingham University in 2001 continuing her research within the Transmissions UTC and contributing to a number of EU and UK funded research consortia. In 2007 Kathy moved to Rolls Royce in Derby as Global Chief of R&T in Transmissions Structures and Drives, a post she held for 2 years before returning to Nottingham University in 2009.

In 2015 Kathy was given the role of course director for a new course in Aerospace Engineering at Nottingham and was a key member of the team who developed and delivered the new course, which has its first intake in 2016. 2018 saw Kathy become Head of Department for Mechanical, Materials and Manufacturing Engineering, a role she held for 18 months.

Kathy is currently an associate professor in the department holding a number of departmental roles including Admissions tutor. She is an active member of the (G2TRC), home to the Transmissions UTC. (Her surname changed from Simmons to Johnson in 2019.)

Expertise Summary

Experimental Fluids

Kathy has always had an interest in experimental fluids and through the Transmissions UTC has had the opportunity to work with Rolls Royce and G2TRC engineering colleagues to develop some increasingly complex test rigs and test facilities. These rigs have been used yield improved understanding and design capabilty for aeroengine bearing chambers including the internal gearbox. Optical methods including high speed imaging are using alongside other measurement techniques.

Computational Fluid Dynamics

Throughout her industry and university research career Kahty has worked on projects where CFD has been applied to enhance understanding of industrially relevant flow situations. The CFD and experimental strands of research are closely interlinked with experimental work providing validation data for CFD. Her primary research activity is linked to aerospace transmissions where, through the University Technology Centre in Gas Turbine Transmission Systems, she have supervised a number of projects that have enhanced the ability of engineers to model the two-phase flow within aeroengine bearing chambers and gearboxes. Many of these projects have applied commercial CFD packages, primarily Fluent and some open source and in-house codes for specialist applications (thin film motion within bearing chambers, droplet impact on thin films) have been developed.

Applications

In terms of engineering applications, Kathy's current research is all aeroengine focussed, primarily on bearing chambers (two-phase highly rotating flow, film droplet and jet interactions etc). Recent research has investigated intershaft seals and oil scoops. In the past some interesting work on gear windage (mostly the spiral bevel gear of an aeroengine internal gearbox, but some spur gear work too) has been done.

Teaching Summary

Kathy enjoys teaching and has taught Thermofluids, CFD, Introduction to Aerospace and Management related modules. She currently convenes the 3rd year Aerospace Management module and the first year… read more

Research Summary

My current research is focussed around two main themes. Firstly the application of optical and other investigative techniques to multiphase flow in aeroengine bearing chamber geometries and secondly… read more

Recent Publications

  • PALEO CAGEAO, P., SIMMONS, K., PRABHAKAR, A. and CHANDRA, B., 2019. Journal of Engineering for Gas Turbines and Power. 141(1),
  • KRUISBRINK, A., PALEO CAGEAO, P., MORVAN, H. P. and SIMMONS, K., 2019. International Journal of Heat and Fluid Flow. 76, 296-308
  • HEE, J. L., SIMMONS, K., HANN, D. and WALSH, M., 2019.
  • VASQUES, J., IBRAHIM, A., HANN, D., SIMMONS, K. and WALSH, M., 2019.

Kathy enjoys teaching and has taught Thermofluids, CFD, Introduction to Aerospace and Management related modules. She currently convenes the 3rd year Aerospace Management module and the first year Aerospace module that includes Maths, Matlab and the design activity of the 3 project weeks.

Kathy was part of the team that developed and implemented the Aerospace Engineering course at Nottingham, holding the role of course director for a few years.

Current Research

My current research is focussed around two main themes. Firstly the application of optical and other investigative techniques to multiphase flow in aeroengine bearing chamber geometries and secondly the development and application of CFD to model flow and heat transfer in aeroengine transmissions systems, primarily bearing chambers.

The vast majority of my research takes place within the Gas Turbines and Transmissions Research Group (G2TRC) and is closely linked to capability acquisition at Rolls Royce Aerospace.

Past Research

The majority of my research career has been associated with CFD and experimental approaches to understanding, modelling and improving aeroengine transmissions systems with particular focus on bearing chambers.

In my early career I worked on Vortex shedding and fluidic oscillators using PIV, CFD and optical techniques.

My PhD invovled the application of CFD and PIV to ceramic candle filters for clean coal technology.

Future Research

I hope and plan to continue to research collaboratively within G2TRC and with Rolls Royce Aerospace colleagues.

  • PALEO CAGEAO, P., SIMMONS, K., PRABHAKAR, A. and CHANDRA, B., 2019. Journal of Engineering for Gas Turbines and Power. 141(1),
  • KRUISBRINK, A., PALEO CAGEAO, P., MORVAN, H. P. and SIMMONS, K., 2019. International Journal of Heat and Fluid Flow. 76, 296-308
  • HEE, J. L., SIMMONS, K., HANN, D. and WALSH, M., 2019.
  • VASQUES, J., IBRAHIM, A., HANN, D., SIMMONS, K. and WALSH, M., 2019.
  • CHANDRA, B. and SIMMONS, K., 2019.
  • NICOLI, A., JEFFERSON-LOVEDAY, R. and SIMMONS, K., 2019.
  • ARCILA, D. G., MORVAN, H., SIMMONS, K., AMBROSE, S., WALSH, M. and KAKIMPA, B., 2019.
  • AKINOLA A ADENIYI, HERVE MORVAN and KATHY SIMMONS, 2018. A coupled Euler-Lagrange CFD Modelling of Droplets-to-film The Aeronautical journal. (In Press.)
  • BUDI CHANDRA, KATHY SIMMONS and ANDREW MURPHY, 2018. Mechanisms for residence volume reduction in shallow sump Journal of Engineering for Gas Turbines and Power. (In Press.)
  • PALOMA PALEO CAGEAO, KATHY SIMMONS, ARUN PRABHAKAR and BUDI CHANDRA, 2018. Journal of Engineering for Gas Turbines and Power. 14
  • AMBROSE, S., MORVAN, H. and SIMMONS, K., 2018.
  • PRABHAKAR, A., ABAKR, Y. A. and SIMMONS, K., 2018.
  • SIMMONS, K., HARRISON, L., KORSUKOVA, E. and CAGEAO, P. P., 2018.
  • HEE, J. L., SIMMONS, K., KAKIMPA, B. and HANN, D., 2018.
  • ADENIYI, A. A., MORVAN, H. and SIMMONS, K., 2017. Journal of Engineering for Gas Turbines and Power. 139(1),
  • P. ZACHARZEWSKI, K. SIMMONS, R. J. JEFFERSON-LOVEDAY and L. CAPONE, 2016. Evaluation of the SST-SAS model for prediction of separated flow inside turbine internal cooling passages In: ASME Turbo Expo GT2016 Seoul.
  • EVGENIA KORSUKOVA, ARNO KRUISBRINK, HERVE MORVAN, PALOMA PALEO CAGEAO and KATHY SIMMONS, 2016. Oil Scoop simulation and analysis using CFD and SPH In: ASME Turbo Expo 2016. 8
  • BUDI CHANDRA and KATHY SIMMONS, 2016. Innovatie shallow sump customizations for aero-engine bearing chambers In: ASME Turbo Expo 2016. 12
  • ANDREA BRISTOT, HERVE MORVAN and KATHY SIMMONS, 2016. Evaluation of a volume of fluid CFD methodology for the oil film thickness estimation in an aero-engine bearing chamber In: ASME Turbo Expo 2016.
  • AKINOLA ADENIYI, HERVE MORVAN and KATHY SIMMONS, 2016. Oil-air flow between the cage and inner race of an aeroengine bearing In: ASME Turbo Expo 2016. 10
  • HANN, D. B., CHERDANTSEV, A. V., MITCHELL, A., MCCARTHY, I. N., HEWAKANDAMBY, B. N. and SIMMONS, K., 2016. Experiments in Fluids. 57(4),
  • CHANDRA, B. and SIMMONS, K., 2016.
  • ADENIYI, A. A., MORVAN, H. P. and SIMMONS, K. A., 2015.
  • AL, BAYDU C., SIMMONS, KATHY and MORVAN, HERVE P., 2015. TWO-PHASE COMPUTATIONAL MODELLING OF A SPIRAL BEVEL GEAR USING A EULERIAN MULTIPHASE MODEL PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 5C.
  • SIMMONS, K. and JOHNSON, G., 2015.
  • CHANDRA, B. and SIMMONS, K., 2014.
  • ADENIYI, AKINOLA A., MORVAN, HERVE P. and SIMMONS, KATHY A., 2014. A TRANSIENT CFD SIMULATION OF THE FLOW IN A TEST RIG OF AN AEROENGINE BEARING CHAMBER PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2014, VOL 5C.
  • TURNER, A., MORVAN, H. P. and SIMMONS, K., 2014. TWO PHASE COMPUTATIONAL STUDY OF FLOW BEHAVIOUR IN A REGION WITHIN AN AEROENGINE GEARBOX PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2014, VOL 5C.
  • SIMMONS, KATHY, GUYMER, DAN and TURNER, ADAM, 2014. CFD INVESTIGATION INTO OIL/AIR BEHAVIOUR NEAR A SHROUDED SPIRAL BEVEL GEAR PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2014, VOL 5C.
  • SIMMONS, KATHY and CHANDRA, BUDI, 2014. EXPERIMENTAL INVESTIGATION INTO THE PERFORMANCE OF SHALLOW AEROENGINE OFF-TAKES PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2014, VOL 5C.
  • AL, BAYDU C., SIMMONS, KATHY and MORVAN, HERVE P., 2014. PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2014, VOL 5C.
  • TURNER A., MORVAN H.P. and SIMMONS K., 2013. Proceedings of the ASME Turbo Expo. GT2013-94735
  • CHANDRA, B., SIMMONS, K. and KEELER, B., 2013.
  • CHANDRA, B., SIMMONS, K., PICKERING, S., COLLICOTT, S. H. and WIEDEMANN, N., 2013. Journal of Engineering for Gas Turbines and Power. 135(5),
  • CHANDRA, B., SIMMONS, K., PICKERING, S., COLLICOTT, S. H. and WIEDEMANN, N., 2013. Journal of Engineering for Gas Turbines and Power. 135(5),
  • SIMMONS, K., JOHNSON, G. and WIEDEMANN, N., 2012. Journal of Engineering for Gas Turbines and Power. 134(8), 081202
  • CHANDRA, B, SIMMONS, K, PICKERING, S and TITTEL, M, 2011. Liquid and gas behaviour in a highly rotating environment: GT2011-46430 In: ASME Turbo Expo 2011. 9
  • CHANDRA, B., SIMMONS, K., PICKERING, S. and TITTEL, M., 2010.
  • JOHNSON, G., CHANDRA, B., FOORD, C. and SIMMONS, K., 2009. Journal of Turbomachinery. 131(4), 041019
  • FARRALL, M., HIBBERD, S. and SIMMONS, K., 2008. Journal of Engineering for Gas Turbines and Power. 130(1), 012501
  • RAPLEY, S., EASTWICK, C. and SIMMONS, K., 2008. Journal of Fluids Engineering. 130(6), 061102
  • JOHNSON, G, CHANDRA, B, FOORD, C and SIMMONS, K, 2008. Windage Power Losses From Spiral Bevel Gears With Varying Oil Flows And Shroud Configurations
  • RAPLEY, S, EASTWICK, C and SIMMONS, K, 2008. Effect Of Variations In Shroud Geometry On Single Phase Flow Over A Shrouded Single Spiral Gear
  • EASTWICK, CN, SIMMONS, K, JOHNSON, G, PICKERING, S and FARRALL, M, 2008. US 2008/0029167 A1 02/07/2008 00:00:00
  • AL-SHIBL, K., SIMMONS, K. and EASTWICK, C.N., 2007. Proceedings of the Institution of Mechanical Engineers. Part A, Journal of Power and Energy. 221(3), 331-341
  • RAPLEY, S, EASTWICK, C and SIMMONS, K, 2007. The Application Of Cfd To Model Windage Power Loss From A Spiral Bevel Gear
  • JOHNSON, G, SIMMONS, K and FOORD, C, 2007. Experimental Investigation Into Windage Power Loss From A Shrouded Spiral Bevel Gear
  • EASTWICK, C.N., SIMMONS, K., WANG, Y. and HIBBERD, S., 2006. Proceedings of the Institution of Mechanical Engineers. Part A, Journal of Power and Energy. 220(7), 707-717
  • FARRALL, M., SIMMONS, K., HIBBERD, S. and GORSE, P., 2006. Journal of Engineering for Gas Turbines and Power. 128(1), 111-117
  • SHUAIB, N.H., POWER, H., HIBBERD, S. and SIMMONS, K., 2006. International Journal for Numerical Methods in Engineering. 68(7), 755-789
  • FARRALL, M., HIBBERD, S., SIMMONS, K. and GIDDINGS, D., 2006. Proceedings of the Institution of Mechanical Engineers. Part G, Journal of Aerospace Engineering. 220(3), 197-202
  • CLIFFORD, M.J., SIMMONS, K.A., ROBERTS, J. and TRUSCOT, T.D., 2006. Proceedings of the Institution of Mechanical Engineers. Part C, Journal of Mechanical Engineering Science. 220(3), 325-332
  • AL-HAJERI, MH, AROUSSI, A, SIMMONS, K and PICKERING, SJ, 2006. Chemical Engineering & Technology. 29(3), 348-354
  • LEE, C.W., PALMA, P.C., SIMMONS, K. and PICKERING, S.J., 2005. Journal of Engineering for Gas Turbines and Power. 127(4), 697-703
  • AL-HAJERI, M.H., AROUSSI, A., SIMMONS, K. and PICKERING, S.J., 2005. Proceedings of the Institution of Mechanical Engineers. Part A, Journal of Power and Energy. 219(1), 77-90
  • FARRALL, M., HIBBERD, S., SIMMONS, K. and YOUNG, C., 2005. Computational investigation of the airflow through a shrouded bevel gear. In: ASME INTERNATIONAL GAS TURBINE INSTITUTE, ed., Proceedings of ASME Turbo Expo 2005, Power for Land, Sea, and Air Conference, Reno, Nevada, USA, June 6-9, 2005. GT2005. New York: American Society of Mechanical Engineers. Paper 68879
  • FARRALL, M., HIBBERD, S., SIMMONS, K. and YOUNG, C., 2005. Computational investigation of the airflow through a shrouded bevel gear. In: ASME INTERNATIONAL GAS TURBINE INSTITUTE, ed., Proceedings of ASME Turbo Expo 2005, Power for Land, Sea, and Air Conference, Reno, Nevada, USA, June 6-9, 2005. GT2005. New York: American Society of Mechanical Engineers. Paper 68879
  • EASTWICK, C.N., HEUBNER, K., AZZOPARDI, B.J., SIMMONS, K.A., YOUNG, C. and MORRISON, R., 2005. Film flow around bearing chamber support structures In: Proceedings of ASME Turbo Expo 2005: Power for Land, Sea and Air.
  • FARRALL, M, SIMMONS, K, HIBBERD, S and YOUNG, C, 2005. Computational Investigation Of The Airflow Through A Shrouded Bevel Gear
  • EASTWICK, C, HUEBNER, K, AZZOPARDI, B, SIMMONS, K, YOUNG, C and MORRISON, R, 2005. Film Flow Around Bearing Chamber Support Structures
  • AL-HAJERI, MH, AROUSSI, A, SIMMONS, K and PICKERING, SJ, 2005. Proceedings Of The Institution Of Mechanical Engineers Part A-Journal Of Power And Energy. 219(A1), 77-90
  • GU, S., MCCARTNEY, D.G., EASTWICK, C.N. and SIMMONS, K., 2004. Journal of Thermal Spray Technology. 13(2), 200-213
  • LEE, C.W., JOHNSON, G.R., PALMA, P.C., SIMMONS, K. and PICKERING, S.J., 2004. Factors affecting the behaviour and efficiency of a targetted jet delivering oil to a bearing lubrication system In: 2004 ASME Turbo Expo, Jun 14-17 2004.
  • LEE, C.W., PALMA, P.C., SIMMONS, K. and PICKERING, S.J., 2004. Comparison of CFD and PIV data for the airflow in an aero-engine bearing chamber In: 2004 ASME Turbo Expo, Jun 14-17 2004.
  • FARRALL, M., HIBBERD, S., SIMMONS, K. and GIDDINGS, D., 2004. Predictions of air/oil exit flows in a commercial aero-engine bearing chamber In: Seminar Proceedings: Analytic Methods and Tools in Transmission Systems.
  • FARRALL, M., SIMMONS, K., HIBBERT, S. and GORSE, P., 2004. GT2004-53698 A Numerical Model for Oil Film Flow in an Aero-Engine Bearing Chamber and Comparison With Experimental Data PROCEEDINGS OF THE ASME TURBO EXPO. YEAR(VOL 4), 409-418
  • GIDDINGS, D., PICKERING, S.J., SIMMONS, K. and EASTWICK, C.N., 2002. Combustion and aerodynamic behaviour of car tyre chips in a cement works precalciner Journal of The Institute of Energy. 504, 91-99
  • EASTWICK, C.N., SIMMONS, K.A., HIBBERD, S., WANG, Y., CARE, I. and AROUSSI, A., 2002. Using CFD to improve aero-engine separator design In: ASME - Pressure vessels and piping. 215-220
  • SIMMONS, K.A., HIBBERD, S., WANG, Y. and EASTWICK, C.N., 2002. Numerical study of the two-phase air/oil flow within an aeroengine bearing chamber using a coupled Lagrangian droplet tracking method In: Proceedings of ASME Fluids Engineering Division Summer Meeting 2002.
  • GIDDINGS, D, PICKERING, SJ, SIMMONS, K and EASTWICK, CN, 2002. Combustion And Aerodynamic Behaviour Of Car Tyre Chips In A Cement Works Precalciner Journal Of The Institute Of Energy. 75(504), 91-99
  • AROUSSI,A., SIMMONS,K. and PICKERING,S.J., 2001. Fuel. 80, 335-343
  • GU, S., EASTWICK, C.N., SIMMONS, K.A. and MCCARTNEY, D.G., 2001. Journal of Thermal Spray Technology. 10(3), 461-469
  • WANG, Y., HIBBERD, S., SIMMONS, K.A., EASTWICK, C.N. and CARE, I., 2001. Application of CFD to modelling two-phase flow in a high-speed aero-engine transmission chamber In: ASME FEDSM冒1:ASME 2001 Fluids Engineering Division Summer Meeting. 249-254
  • GIDDINGS, D, PICKERING, SJ, SIMMONS, K and EASTWICK, CN, 2001. Using Cfd To Investigate Combustion In A Cement Manufacturing Process
  • CARE, I, EASTWICK, C, HIBBERD, S, SIMMONS, K and WANG, Y, 2001. Cfd Computation Of Air-Oil Separation In An Engine Breather
  • AROUSSI, A, SIMMONS, K and PICKERING, SJ, 2001. Fuel. 80(3), 335-343
  • GIDDINGS, D., EASTWICK, C. N., PICKERING, S. J. and SIMMONS, K., 2000. Proceedings of the Institution of Mechanical Engineers. Part A, Journal of Power and Energy. VOL 214(PART 3), 269-280
  • HOSSAIN, M., WANG, Y., HIBBERD, S. and SIMMONS, K.A., 2000. A Comparison of Flow Characteristics for Two Aeroengine Air/Oil Separators In: NAFEMS Conference on Industrial CFD and the Move Towards Multiphase Analysis.
  • EASTWICK, C.N., HIBBERD, S., CARE, I., SIMMONS, K. and WANG, Y., 2000. Numerical 糖心原创 of the Turbulent Air Flow Field and Droplet Trajectories in a Geometrically Simplified Bearing Chamber with the Presence of an Oil-Air Separator
  • FARRALL, M., HIBBERD, S. and SIMMONS, K.A., 2000. Computational Modelling of Two-Phase Air/Oil Flow within an Aero-Engine Bearing Chamber In: Proceedings of ASME FEDSM'00. 1-8
  • WANG, Y., CARE, I., EASTWICK, C.N., HIBBERD, S. and SIMMONS, K.A., 1999. CFD 糖心原创 of Droplet Motion in a Simplified Breather Chamber Geometry at High Shaft Rotating Speed In: Multiphase Flow and Heat Transfer Proceedings of the 4th International Symposium.
  • SIMMONS, K.A., AROUSSI, A., PICKERING, S. and CLAYTON, B., 1998. Particulate Material Deposition on a Ceramic Candle Filter In: FEDSM'98, ASME Fluids Engineering Division Summer Meeting.
  • SIMMONS, K.A., EASTWICK, C.N. and HIBBERD, S., 1998. Mathematical modelling of an aero gas turbine bearing chamber In: Aerospace Transmission Systems. 45-50
  • SIMMONS, K.A., AROUSSI, A., PICKERING, S. and CLAYTON, B., 1997. Removal of Particulates from a Hot Gas Stream In: 7th International Conference on Laser Anemometry - Advances and Applications. 729-736
  • CHANDRA B., SIMMONS K., PICKERING S., COLLICOTT S.H. and WIEDEMANN N., Journal of Engineering for Gas Turbines and Power. 51201

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