1-16 of 16
Nigel Johnston
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Comparison of Methods for Measuring Pump Flow Ripple and Impedance

Chris Bramley, Nigel Johnston
Proc. ASME. FPMC2017, ASME/BATH 2017 Symposium on Fluid Power and Motion Control, V001T01A008, October 16–19, 2017
Paper No: FPMC2017-4223
DOI: https://doi.org/10.1115/FPMC2017-4223
View Paper
PDF
Topics: Flow (Dynamics), Pumps, Circuits, Fluids, Noise (Sound), Pressure, Reliability, Testing, Transducers, Vacuum pumps
Proceedings Papers

Variable Displacement Gear and Gerotor Pumps

Nicholas Avery, Nigel Johnston
Proc. ASME. FPMC2015, ASME/BATH 2015 Symposium on Fluid Power and Motion Control, V001T01A018, October 12–14, 2015
Paper No: FPMC2015-9527
DOI: https://doi.org/10.1115/FPMC2015-9527
View Paper
PDF
Topics: Displacement, Gears, Pumps, Engineering prototypes, Computer-aided design, Crude oil, Engines, Flow (Dynamics), Lubrication, Power steering
Journal Articles

Experimental Investigation of a Switched Inertance Hydraulic System With a High-Speed Rotary Valve

Min Pan, Nigel Johnston, James Robertson, Andrew Plummer, Andrew Hillis, Huayong Yang
Journal: Journal of Dynamic Systems, Measurement, and Control
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. December 2015, 137(12): 121003.
Paper No: DS-14-1547
DOI: https://doi.org/10.1115/1.4031325
Published Online: September 14, 2015
View Article
PDF
Topics: Flow (Dynamics), Pressure, Valves, Speed of sound, Hydraulic drive systems
Proceedings Papers

Experimental Investigation of a Switched Inertance Hydraulic System

Min Pan, James Robertson, Nigel Johnston, Andrew Plummer, Andrew Hillis
Proc. ASME. FPMC2014, ASME/BATH 2014 Symposium on Fluid Power and Motion Control, V001T01A020, September 10–12, 2014
Paper No: FPMC2014-7829
DOI: https://doi.org/10.1115/FPMC2014-7829
View Paper
PDF
Topics: Hydraulic drive systems, Flow (Dynamics), Pressure, Valves, Capacitance, Dynamics (Mechanics), Speed of sound, Steady state, System efficiency
Proceedings Papers

The Influence of Passive Valve Characteristics on the Performance of a Piezo Pump

Jean-Paul Henderson, Andrew Plummer, D. Nigel Johnston, Chris Bowen
Proc. ASME. FPMC2013, ASME/BATH 2013 Symposium on Fluid Power and Motion Control, V001T01A032, October 6–9, 2013
Paper No: FPMC2013-4452
DOI: https://doi.org/10.1115/FPMC2013-4452
View Paper
PDF
Topics: Pumps, Valves, Flow (Dynamics), Actuators, Cycles, Cylinders, High temperature, Motion control, Pistons, Resonance
Proceedings Papers

Active Control of Pressure Pulsation in a Piping System Using Measured Dynamic Flow Rate

Min Pan, D. Nigel Johnston, Andrew Plummer, Sylwester Kudzma, Andrew Hillis
Proc. ASME. FPMC2013, ASME/BATH 2013 Symposium on Fluid Power and Motion Control, V001T01A013, October 6–9, 2013
Paper No: FPMC2013-4423
DOI: https://doi.org/10.1115/FPMC2013-4423
View Paper
PDF
Topics: Flow (Dynamics), Piping systems, Pressure, Noise (Sound), Fluids, Cavitation, Control equipment, Fluctuations (Physics), Motors, Pumps
Journal Articles

Use of Pipeline Wave Propagation Model for Measuring Unsteady Flow Rate

Nigel Johnston, Min Pan, Sylwester Kudzma, Pengfei Wang
Journal: Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. March 2014, 136(3): 031203.
Paper No: FE-13-1052
DOI: https://doi.org/10.1115/1.4026106
Published Online: January 24, 2014
View Article
PDF
Topics: Flow (Dynamics), Pressure, Transducers, Unsteady flow, Wave propagation, Pipelines, Errors
Proceedings Papers

A Switched Inertance Device for Efficient Control of Pressure and Flow

D. Nigel Johnston
Proc. ASME. DSCC2009, ASME 2009 Dynamic Systems and Control Conference, Volume 1, 589-596, October 12–14, 2009
Paper No: DSCC2009-2535
DOI: https://doi.org/10.1115/DSCC2009-2535
View Paper
PDF
Topics: Flow (Dynamics), Pressure, Energy consumption, Energy dissipation, Engineering prototypes, Noise (Sound), Valves
Journal Articles

Measured Dynamic Properties of Flexible Hoses

D. Nigel Johnston, Tim M. Way, Kerry M. Cone
Journal: Journal of Vibration and Acoustics
Article Type: Research Papers
J. Vib. Acoust. April 2010, 132(2): 021011.
DOI: https://doi.org/10.1115/1.4000774
Published Online: March 18, 2010
View Article
PDF
Topics: Bulk modulus, Nylon fabrics, Pressure, Steel, Stiffness, Temperature, Poisson ratio
Proceedings Papers

Modeling for a High-Bandwidth High-Flow Valve Design Based on Ho¨rbiger Plate Operation

David T. Branson, Fengcai Wang, D. Nigel Johnston, Derek G. Tilley, Chris R. Bowen, Patrick S. Keogh
Proc. ASME. FEDSM2008, Volume 1: Symposia, Parts A and B, 967-972, August 10–14, 2008
Paper No: FEDSM2008-55230
DOI: https://doi.org/10.1115/FEDSM2008-55230
View Paper
PDF
Topics: Design, Flow (Dynamics), Modeling, Valves, Simulation, Engineering simulation, Construction, Dynamic response, Piezoelectric actuators, Separation (Technology)
Proceedings Papers

Measurement of Wave Propagation Characteristics of Flexible Hoses

D. Nigel Johnston, Tim M. Way, Kerry M. Cone
Proc. ASME. IMECE2007, Volume 4: Design, Analysis, Control and Diagnosis of Fluid Power Systems, 159-167, November 11–15, 2007
Paper No: IMECE2007-41113
DOI: https://doi.org/10.1115/IMECE2007-41113
View Paper
PDF
Topics: Bulk modulus, Nylon fabrics, Pressure, Steel, Wave propagation
Proceedings Papers

Prediction of Hydraulic Inductance

D. Nigel Johnston
Proc. ASME. IMECE2002, Fluid Power Systems and Technology, 85-92, November 17–22, 2002
Paper No: IMECE2002-39340
DOI: https://doi.org/10.1115/IMECE2002-39340
View Paper
PDF
Topics: Computational fluid dynamics, Dynamic response, Fluids, Geometry, Inertia (Mechanics), Noise (Sound), Stability, Valves
Proceedings Papers

Efficient Methods for Numerical Modelling of Laminar Friction in Fluid Lines

D. Nigel Johnston
Proc. ASME. IMECE2004, Fluid Power Systems and Technology, 261-267, November 13–19, 2004
Paper No: IMECE2004-60646
DOI: https://doi.org/10.1115/IMECE2004-60646
View Paper
PDF
Topics: Fluids, Friction, Modeling, Pipe flow, Pipelines, Transmission lines
Proceedings Papers

Prediction of Hydraulic Inertance Using Acoustic Measurements and CFD Modeling

Lewis J. Boyd, Andrew P. Roberts, Andrew P. S. Collett, D. Nigel Johnston, Derek G. Tilley, Kevin A. Edge
Proc. ASME. IMECE2006, Fluid Power Systems and Technology, 231-239, November 5–10, 2006
Paper No: IMECE2006-14272
DOI: https://doi.org/10.1115/IMECE2006-14272
View Paper
PDF
Topics: Acoustics, Computational fluid dynamics, Modeling, Valves, Fluids, Secondary cells, Steady state, Dynamic response, Flow (Dynamics), Gates (Closures)
Journal Articles

Efficient Methods for Numerical Modeling of Laminar Friction in Fluid Lines

D. Nigel Johnston
Journal: Journal of Dynamic Systems, Measurement, and Control
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. December 2006, 128(4): 829–834.
DOI: https://doi.org/10.1115/1.2361320
Published Online: March 8, 2006
View Article
PDF
Topics: Computer simulation, Fluids, Friction, Pipe flow, Transmission lines
Journal Articles

Prediction of Fluid Inertance in Nonuniform Passageways

D. Nigel Johnston
Journal: Journal of Fluids Engineering
Article Type: Technical Papers
J. Fluids Eng. March 2006, 128(2): 266–275.
DOI: https://doi.org/10.1115/1.2171713
Published Online: January 10, 2006
View Article
PDF
Topics: Flow (Dynamics), Fluids, Pressure, Valves, Computational fluid dynamics, Noise (Sound)