19962021
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Research Output 1996 2019

2019
2 Citations (Scopus)
10 Downloads (Pure)

Analysis of a horizontal-axis tidal turbine performance in the presence of regular and irregular waves using two control strategies

Ordonez-Sanchez, S., Allmark, M., Porter, K., Ellis, R., Lloyd, C., Santic, I., O'Doherty, T. & Johnstone, C., 24 Jan 2019, In : Energies. 12, 3, 22 p., 367.

Research output: Contribution to journalArticle

Open Access
File
Turbine
Control Strategy
Irregular
Turbines
Horizontal
1 Downloads (Pure)

An investigation into Reynolds scaling and solidity for a HATT tidal turbine

Allmark, M., Ordonez-Sanchez, S., Wang, S., Kang, Y. S., Jo, C-H., O'Doherty, T. & Johnstone, C., 1 Sep 2019. 8 p.

Research output: Contribution to conferencePaper

Open Access
File
Turbines
Rotors
Testing
Turbomachine blades
Reynolds number
2 Downloads (Pure)
Open Access
File
current velocity
velocity profile
turbine
Turbines
energetics
1 Citation (Scopus)
6 Downloads (Pure)

Energy yield assessment from ocean currents in the insular shelf of Cozumel Island

Alcérreca-Huerta, J. C., Encarnacion, J. I., Ordoñez-Sánchez, S., Callejas-Jiménez, M., Gallegos Diez Barroso, G., Allmark, M., Mariño-Tapia, I., Silva Casarín, R., O'Doherty, T., Johnstone, C. & Carrillo, L., 15 May 2019, In : Journal of Marine Science and Engineering. 7, 5, 18 p., 147.

Research output: Contribution to journalArticle

Open Access
File
Ocean currents
Flow velocity
flow velocity
energy
Bathymetry
15 Downloads (Pure)

First round of MaRINET 2 Tidal Energy Round Robin Tests: combined wave and current tests

Gaurier, B., Ordonez-Sanchez, S., Facq, J-V., Germain, G., Johnstone, C., Martinez, R., Santic, I. & Salvatore, F., 1 Sep 2019. 10 p.

Research output: Contribution to conferencePaper

Open Access
File
Turbines
Ship model tanks
Turbulence
Rotors

Flume testing of passively adaptive composite tidal turbine blades under combined wave and current loading

Porter, K. E., Ordonez-Sanchez, S. E., Murray, R. E., Allmark, M., Johnstone, C. M., O'Doherty, T., Mason-Jones, A., Doman, D. A. & Pegg, M. J., 5 Dec 2019, (Accepted/In press) In : Journal of Fluids and Structures. 34 p.

Research output: Contribution to journalArticle

Turbomachine blades
Turbines
Composite materials
Testing
Torque

Numerical models to predict the performance of tidal stream turbines working under off-design conditions

Ordonez-Sanchez, S., Ellis, R., Porter, K. E., Allmark, M., O'Doherty, T., Mason-Jones, A. & Johnstone, C., 8 Apr 2019, (Accepted/In press) In : Ocean Engineering. 18 p.

Research output: Contribution to journalArticle

Turbomachine blades
Numerical models
Turbines
Computational fluid dynamics
Momentum

Resource assessment of the marine current developed in the Cozumel Channel

Alcérreca-Huerta, J. C., Callejas-Jiménez, M. E., Ordonez-Sanchez, S., Gallegos, G., Allmark, M. J., Johnstone, C. M., Marino-Tapia, I., O’Doherty, T., Silva, R. & Carrillo, L., 1 Sep 2019. 8 p.

Research output: Contribution to conferencePaper

Open Access
File
Ocean currents
Flow velocity
Water
Potential energy
Greenhouse gases
2018
26 Downloads (Pure)

Blade element momentum theory to predict the effect of wave-current interactions on the performance of tidal stream turbines

Ordonez-Sanchez, S., Porter, K., Allmark, M., Johnstone, C. & O'Doherty, T., 9 Sep 2018. 8 p.

Research output: Contribution to conferencePaper

Open Access
File
Momentum
Turbines
Flow velocity
Time series
Durability
30 Downloads (Pure)

Design process for a scale horizontal axis tidal turbine blade

Ellis, R., Allmark, M., O'Doherty, T., Mason-Jones, A., Ordonez-Sanchez, S., Johannesen, K. & Johnstone, C., 9 Sep 2018. 8 p.

Research output: Contribution to conferencePaper

Open Access
File
Turbomachine blades
Turbines
Computational fluid dynamics
Testing
Computational methods
13 Downloads (Pure)

Laboratory study of tidal turbine performance in irregular waves

Porter, K., Ordonez-Sanchez, S., Allmark, M., Ellis, R., Lloyd, C., O'Doherty, T. & Johnstone, C., 9 Sep 2018. 9 p.

Research output: Contribution to conferencePaper

Open Access
File
Turbines
Turbomachine blades
Torque
Torque control
Speed control
19 Downloads (Pure)
Open Access
File
Bathymetry
Turbines
Sea level
Coastal zones
Torque
5 Citations (Scopus)
6 Downloads (Pure)

Towing tank testing of passively adaptive composite tidal turbine blades and comparison to design tool

Murray, R. E., Ordonez Sanchez, S. E., Porter, K. E., Doman, D. A., Pegg, M. J. & Johnstone, C. M., 28 Feb 2018, In : Renewable Energy. 116, Part A, p. 202-214 13 p.

Research output: Contribution to journalArticle

Open Access
File
Ship model tanks
Turbomachine blades
Turbines
Composite materials
Testing
2017
9 Downloads (Pure)

Evaluating the dynamics of tension mooring supported tidal turbines

Fu, S. & Johnstone, C., 1 Sep 2017.

Research output: Contribution to conferencePaper

Open Access
File
Mooring
Turbines
Pendulums
Turbomachine blades
Cables
43 Downloads (Pure)

Integration of a direct drive contra-rotating generator with point absorber wave energy converters

Porter, K., Ordonez-Sanchez, S., Johnstone, C. & Conesa, S., 27 Aug 2017. 10 p.

Research output: Contribution to conferencePaper

Open Access
File
Takeoff
Torque
Cost reduction
Costs
Hydraulics
41 Downloads (Pure)

Numerical modelling techniques to predict rotor imbalance problems in tidal stream turbines

Ordonez Sanchez, S. E., Porter, K., Ellis, R., Frost, C., Allmark, M., Nevalainen, T., O’Doherty, T. & Johnstone, C., 28 Aug 2017.

Research output: Contribution to conferencePaper

Open Access
File
Turbomachine blades
Turbines
Rotors
Momentum
Computational fluid dynamics
20 Downloads (Pure)

Towing tank and flume testing of passively adaptive composite tidal turbine blades

Murray, R. E., Ordonez Sanchez, S. E., Porter, K., Doman, D. A., Pegg, M. J. & Johnstone, C., 28 Aug 2017. 9 p.

Research output: Contribution to conferencePaper

Open Access
File
Ship model tanks
Turbomachine blades
Turbines
Composite materials
Testing
2016
5 Citations (Scopus)
63 Downloads (Pure)

A sensitivity analysis on tidal stream turbine loads caused by operational, geometric design and inflow parameters

Nevalainen, T. M., Johnstone, C. M. & Grant, A. D., 31 Dec 2016, In : International Journal of Marine Energy. 16, p. 51-64 14 p.

Research output: Contribution to journalArticle

Open Access
File
turbine
Sensitivity analysis
sensitivity analysis
inflow
Turbines
128 Downloads (Pure)

Comparative study of numerical modelling techniques to estimate tidal turbine blade loads

Porter, K., Ordonez-Sanchez, S., Nevalainen, T., FU, S. & Johnstone, C., 24 Aug 2016, (Accepted/In press). 10 p.

Research output: Contribution to conferencePaper

Open Access
File
Turbomachine blades
Computational fluid dynamics
Turbines
Momentum
Structural analysis
4 Citations (Scopus)
19 Downloads (Pure)

Development and initial application of a blade design methodology for overspeed power-regulated tidal turbines

Gracie-Orr, K., Nevalainen, T. M., Johnstone, C. M., Murray, R. E., Doman, D. A. & Pegg, M. J., 30 Sep 2016, In : International Journal of Marine Energy. 15, p. 140-155 16 p.

Research output: Contribution to journalArticle

Open Access
File
Tidal power
tidal power
turbine
Turbomachine blades
Turbines
100 Downloads (Pure)

Effects of extreme wave-current interactions on the performance of tidal stream turbines

Ordonez Sanchez, S., Porter, K., Frost, C., Allmark, M., Johnstone, C. & O'Doherty, T., 18 Aug 2016, (Accepted/In press). 10 p.

Research output: Contribution to conferencePaper

Open Access
File
Turbines
Torque
Rotors
Strain gages
Turbomachine blades
68 Downloads (Pure)

Evaluating passive structural control of tidal turbines

Fu, S., Johnstone, C. & Clarke, J., 24 Aug 2016, (Accepted/In press) p. 1-8. 8 p.

Research output: Contribution to conferencePaper

Open Access
File
Turbines
Damping
Offshore wind turbines
Frequency domain analysis
Time domain analysis
5 Citations (Scopus)
105 Downloads (Pure)
Open Access
File
Erosion
Turbines
Composite materials
Water
Turbomachine blades
4 Citations (Scopus)
115 Downloads (Pure)
Open Access
File
Erosion
Reinforcement
Turbines
Tidal power
Cavitation corrosion
223 Downloads (Pure)

Tribology of tidal turbine blades: impact angle effects on erosion of polymeric coatings in sea water conditions

Rasool, G., Johnstone, C. & Stack, M. M., 28 Oct 2016, Proceedings of 3rd Asian Wave and Tidal Energy Conference (AWTEC 2016). Singapore, Vol. 2. p. 1016-1033 18 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
File
Tribology
Turbomachine blades
Erosion
Turbines
Coatings
2015
176 Downloads (Pure)
Open Access
File
Intelligent materials
Erosion
Turbines
Composite materials
Polymers
19 Citations (Scopus)
64 Downloads (Pure)

Tidal energy "Round Robin" tests - comparisons between towing tank and circulating tank results

Gaurier, B., Germain, G., Facq, J. V., Johnstone, C. M., Grant, A. D., Day, A. H., Nixon, E., de Felice, F. & Constanzo, M., 31 Dec 2015, In : International Journal of Marine Energy. 12, p. 87-109 23 p.

Research output: Contribution to journalArticle

Open Access
File
Ship model tanks
towing
turbine
Turbines
energy
15 Citations (Scopus)
6 Downloads (Pure)

Tow-tank testing of a 1/20th scale horizontal axis tidal turbine with uncertainty analysis

Doman, D. A., Murray, R. E., Pegg, M. J., Gracie, K., Johnstone, C. M. & Nevalainen, T., 30 Sep 2015, In : International Journal of Marine Energy. 11, p. 105-119 15 p.

Research output: Contribution to journalArticle

Open Access
File
Uncertainty analysis
uncertainty analysis
turbine
Turbines
Rotors
155 Downloads (Pure)

Tribological challenges of scaling up tidal turbine blades

Sharifi, S., Johnstone, C. & Stack, M. M., 6 Sep 2015. 9 p.

Research output: Contribution to conferenceProceeding

Open Access
File
Turbomachine blades
Reinforcement
Turbines
Cavitation corrosion
Tides
2013
9 Citations (Scopus)
102 Downloads (Pure)

A methodology for equitable performance assessment and presentation of wave energy converters based on sea trials

Kofoed, J. P., Pecher, A., Margheritini, L., Antonischen, M., Bittencourt, C., Holmes, B., Retzler, C., Berthelsen, K., Le Crom, I., Neumann, E., Johnstone, C., McCombes, T. & Myers, L. E., Apr 2013, In : Renewable Energy. 52, p. 99-110

Research output: Contribution to journalArticle

Open Access
File
Wire
38 Citations (Scopus)

A techno-economic analysis of tidal energy technology

Johnstone, C., Pratt, D., Clarke, J. & Grant, A., Jan 2013, In : Renewable Energy. 49, p. 101-106 6 p.

Research output: Contribution to journalArticle

Economic analysis
Electricity
Costs
Power generation
Environmental impact
15 Citations (Scopus)
224 Downloads (Pure)

FSI analysis of deformation along offshore pile structure for tidal current power

Jo, C-H., Kim, D-Y., Rho, Y-H., Lee, K-H. & Johnstone, C., Jun 2013, In : Renewable Energy. 54, p. 248-252 5 p.

Research output: Contribution to journalArticle

Open Access
File
Towers
Piles
Global warming
Energy resources
Seawater
2012
27 Citations (Scopus)
25 Downloads (Pure)

Discrete demand side control performance under dynamic building simulation: a heat pump application

Hong, J., Johnstone, C., Torriti, J. & Leach, M., Mar 2012, In : Renewable Energy. 39, 1, p. 85-95 11 p.

Research output: Contribution to journalArticle

Space heating
Pumps
Wind turbines
Controllers
Thermal comfort

Domestic upgrade policy development

Clarke, J. A., Ghauri, S., Johnstone, C. & Samuel, A., 1 May 2012.

Research output: Contribution to conferencePaper

policy development
refurbishment
Simulation Tool
Modeling
Climate
2011
13 Citations (Scopus)
27 Downloads (Pure)

Computation of solar radiation distribution in a solar still with internal and external reflectors

Madhlopa, A. & Johnstone, C., Feb 2011, In : Solar Energy. 85, 2, p. 217-233 17 p.

Research output: Contribution to journalArticle

Solar radiation
Saline water
Evaporators
Distillation
Glass

Equimar: development of best practices for the engineering performance appraisal of wave and tidal energy converters

Johnstone, C., Holmes, B., Myers, L., Mccombes, T. & AbuBakr, B., 5 Sep 2011.

Research output: Contribution to conferencePaper

Sea trials

Holmes, B., O'Conner, M., Neumann, F., Frigaard, P., Kofoed, J. P., Pecher, A., Margarheritini, L., Myers, L., Bahaj, A., Gardner, F. E., Prado, M., Soerensen, H. C., Retzler, C., Bittencourt, C., Flinn, J., Johnstone, C. & Mccombes, T., Apr 2011, Protocols of the Equitable Assessment of Marine Energy Converters. 1st ed. Edinburgh, p. 187-226 40 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Tank testing

Mccombes, T., Johnstone, C., Grant, A., Holmes, B., Barrett, S., Kofoed, J. P., Myers, L., AbuBakr, B., Heller, V. & Bittencourt, C., Apr 2011, Protocols for the Equitable Assessment of Marine Energy Converters. 1st ed. Edinburgh, UK, p. 145-186, Chapter IIA

Research output: Chapter in Book/Report/Conference proceedingChapter

Testing
Power takeoffs
Data Quality
Estimate
Model

Technology demand-side management and control in buildings

Hong, J., Johnstone, C., Kim, J. M. & Tuohy, P. G., 15 Sep 2011, The Future of Electricity Demand: Customers, Citizens and Loads. Cambridge, UK, Vol. Part II, Technology. 129 p. (Supergen Flexnet Book).

Research output: Chapter in Book/Report/Conference proceedingChapter

Demand side management
150 Downloads (Pure)

The implementation of discrete demand management algorithms within energy systems modelling

Clarke, J. A., Hong, J., Johnstone, C. & Kelly, N., 4 Apr 2011. 6 p.

Research output: Contribution to conferencePaper

File
System Modeling
Energy
Renewable Energy
Energy conservation
Renewable energy resources

The potential impact of policy and legislation on the energy demands of UK buildings and implications for the electrical network

Clarke, J. A., Hong, J., Johnstone, C., Kim, J. M. & Tuohy, P. G., 15 Sep 2011, The Future of Electricity Demand: Customers, Citizens and Loads. Cambridge, UK, Vol. Part IV Policy and Regulation. (Supergen Flexnet Book).

Research output: Chapter in Book/Report/Conference proceedingChapter

legislation
energy demand
policy

Tidal turbine wakes: small scale experimental and initial computational modelling

Rose, S., Ordonez Sanchez, S. E., Johnstone, C., Mccombes, T., Grant, A., Lee, K. H. & Jo, C. H., 5 Sep 2011.

Research output: Contribution to conferencePaper

Turbines

Tow tank tests of tethered marine turbines to determine system dynamic response

Ordonez Sanchez, S. E., Johnstone, C. & Grant, A., 5 Sep 2011.

Research output: Contribution to conferencePaper

Dynamic response
Turbines
8 Citations (Scopus)
312 Downloads (Pure)

Unsteady wake modelling for tidal current turbines

Mccombes, T., Johnstone, C. & Grant, A., Jul 2011, In : IET Renewable Power Generation. 5, 4, p. 299-310 12 p.

Research output: Contribution to journalArticle

File
Vorticity
Turbines
Kinematics
Vortex flow
Rotors
2010
9 Citations (Scopus)
229 Downloads (Pure)
File
Single point mooring
Ocean currents
Turbines
Power quality
Permanent magnets
1 Citation (Scopus)
60 Downloads (Pure)

Assessing and benchmarking the performance of advanced building facades

Clarke, J. A. & Johnstone, C., Apr 2010, Materials for Energy Efficiency and Comfort in Buildings . Hall, M. R. (ed.). Cambridge, p. 484-502 19 p. (Woodhead Energy Series; no. 14).

Research output: Chapter in Book/Report/Conference proceedingChapter

Open Access
File
Facades
Benchmarking
Wind Turbine
Climate
Wind turbines
Electricity
Hot Temperature
Demand management
Viability
Supply network

A techno-economic appraisal of a tensioned mooring supported, contra-rotating tidal turbine

Johnstone, C., Pratt, D., Clarke, J. A. & Grant, A., 25 Sep 2010, Proceedings of the World Renewable Energy Congress XI (WRECXI).

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Mooring
Turbines
Economics
Economic appraisal

Contra rotating marine turbines tank tests to analyse system dynamic response

Ordonez Sanchez, S. E., Johnstone, C. & Grant, A., 6 Oct 2010.

Research output: Contribution to conferencePaper

Dynamic response
Turbines

Experimental tank testing of contra rotating marine turbines to quantify the parameters influencing system dynamic response

Ordonez Sanchez, S. E., Johnstone, C., Grant, A. & Rose, S., 25 Sep 2010, Proceedings of the World Renewable Energy Congress XI (WRECXI).

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Dynamic response
Turbines
Testing