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Journal Articles

Quasi-Static Thermal Modeling of Multiscale Sliding Contact for Unlubricated Brush Seal Materials

Qingfeng Xia, David R. H. Gillespie, Andrew K. Owen, Gervas Franceschini
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2019, 141(7): 071016.
Paper No: GTP-19-1004
https://doi.org/10.1115/1.4042722
Published Online: February 18, 2019
View Article titled, Quasi-Static Thermal Modeling of Multiscale Sliding Contact for Unlubricated Brush Seal Materials
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Topics: Disks, Heat, Rotating disks, Temperature, Thermal conductivity, Modeling, Heating, Heat transfer, Anisotropy, Boundary-value problems
Proceedings Papers

Quasi-Static Thermal Modelling of Multi-Scale Sliding Contact for Unlubricated Brush Seal Materials

Qingfeng Xia, David Gillespie, Andrew Owen, Gervas Franceschini
Proc. ASME. GT2018, Volume 5B: Heat Transfer, V05BT18A002, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75920
https://doi.org/10.1115/GT2018-75920
View Paper titled, Quasi-Static Thermal Modelling of Multi-Scale Sliding Contact for Unlubricated Brush Seal Materials
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Topics: Modeling, Sealants, Disks, Heat, Temperature, Finite element methods, Anisotropy, Thermal conductivity, Wear, Boundary-value problems
Journal Articles

Analytical Modeling and Experimental Validation of Heating at the Leaf Seal/Rotor Interface

Michael J. Pekris, Gervas Franceschini, Andrew K. Owen, Terry V. Jones, David R. H. Gillespie
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2017, 139(4): 042504.
Paper No: GTP-16-1367
https://doi.org/10.1115/1.4034702
Published Online: November 2, 2016
View Article titled, Analytical Modeling and Experimental Validation of Heating at the Leaf Seal/Rotor Interface
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Topics: Flow (Dynamics), Heat transfer, Metals, Rotors, Temperature, Heat, Heat transfer coefficients, Modeling, Dimensional analysis, Test facilities
Journal Articles

Experimental Characterization of Rotor Convective Heat Transfer Coefficients in the Vicinity of a Leaf Seal

Juan-Diego Pelegrin-Garcia, David R. H. Gillespie, Michael J. Pekris, Gervas Franceschini, Leonid Ganin
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2017, 139(3): 031901.
Paper No: GTP-16-1285
https://doi.org/10.1115/1.4034519
Published Online: September 27, 2016
View Article titled, Experimental Characterization of Rotor Convective Heat Transfer Coefficients in the Vicinity of a Leaf Seal
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Topics: Computational fluid dynamics, Convection, Flow (Dynamics), Heat transfer, Pressure, Rotors, Temperature, Thermocouples, Heat flux, Heat
Proceedings Papers

Analytical Modeling and Experimental Validation of Heating at the Leaf Seal/Rotor Interface

Michael J. Pekris, Gervas Franceschini, Andrew K. Owen, Terry V. Jones, David R. H. Gillespie
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT15A026, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57577
https://doi.org/10.1115/GT2016-57577
View Paper titled, Analytical Modeling and Experimental Validation of Heating at the Leaf Seal/Rotor Interface
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Topics: Heating, Modeling, Rotors, Flow (Dynamics), Engines, Temperature, Cavities, Leakage, Sealing (Process), Stiffness
Proceedings Papers

Experimental Characterization of Rotor Convective Heat Transfer Coefficients in the Vicinity of a Leaf Seal

Juan D. Pelegrin-Garcia, David R. H. Gillespie, Michael J. Pekris, Leonid Ganin, Gervas Franceschini
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT15A027, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57603
https://doi.org/10.1115/GT2016-57603
View Paper titled, Experimental Characterization of Rotor Convective Heat Transfer Coefficients in the Vicinity of a Leaf Seal
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Topics: Convection, Experimental characterization, Rotors, Engines, Flow (Dynamics), Pressure, Temperature, Computational fluid dynamics, Design, Friction
Journal Articles

High-Speed Characterization of a Prototype Leaf Seal on an Advanced Seal Test Facility

Michael J. Pekris, Adele Nasti, Ingo H. J. Jahn, Gervas Franceschini
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2016, 138(8): 082503.
Paper No: GTP-15-1561
https://doi.org/10.1115/1.4032422
Published Online: March 15, 2016
View Article titled, High-Speed Characterization of a Prototype Leaf Seal on an Advanced Seal Test Facility
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Topics: Clearances (Engineering), Engineering prototypes, Leakage, Pressure, Rotors, Temperature, Test facilities, Torque, Uncertainty, Flow (Dynamics)
Journal Articles

Experimental Investigation of a Leaf Seal Prototype at Engine-Representative Speeds and Pressures

Michael J. Pekris, Gervas Franceschini, Ingo H. J. Jahn, David R. H. Gillespie
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2016, 138(7): 072502.
Paper No: GTP-15-1449
https://doi.org/10.1115/1.4031875
Published Online: December 4, 2015
View Article titled, Experimental Investigation of a Leaf Seal Prototype at Engine-Representative Speeds and Pressures
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Topics: Clearances (Engineering), Engineering prototypes, Engines, Pressure, Rotors, Torque, Test facilities, Geometry, Leakage, Flow (Dynamics)
Journal Articles

Improved Understanding of Stiffness in Leaf-Type Filament Seals

Ingo H. J. Jahn, Gervas Franceschini, Andrew K. Owen, Terry V. Jones, David R. H. Gillespie
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. January 2016, 138(1): 011004.
Paper No: TURBO-14-1309
https://doi.org/10.1115/1.4031579
Published Online: October 13, 2015
View Article titled, Improved Understanding of Stiffness in Leaf-Type Filament Seals
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Topics: Engineering prototypes, Pressure, Rotors, Stiffness, Torque, Flow (Dynamics)
Proceedings Papers

High Speed Characterization of a Prototype Leaf Seal on an Advanced Seal Test Facility

Michael J. Pekris, Adele Nasti, Ingo H. J. Jahn, Gervas Franceschini
Proc. ASME. GT2015, Volume 5C: Heat Transfer, V05CT15A023, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43465
https://doi.org/10.1115/GT2015-43465
View Paper titled, High Speed Characterization of a Prototype Leaf Seal on an Advanced Seal Test Facility
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Topics: Engineering prototypes, Test facilities, Engines, Leakage, Rotors, ASME Standards, Flight, Measurement uncertainty, Pressure, Torque
Proceedings Papers

Experimental Investigation of a Leaf Seal Prototype at Engine-Representative Speeds and Pressures

Michael J. Pekris, Gervas Franceschini, Ingo H. J. Jahn, David R. H. Gillespie
Proc. ASME. GT2015, Volume 5C: Heat Transfer, V05CT15A018, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43231
https://doi.org/10.1115/GT2015-43231
View Paper titled, Experimental Investigation of a Leaf Seal Prototype at Engine-Representative Speeds and Pressures
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Topics: Engineering prototypes, Engines, Leakage, Stiffness, Torque, Emissions, Fuel consumption, Geometry, Jet engines, Pressure
Journal Articles

An Investigation of Flow, Mechanical, and Thermal Performance of Conventional and Pressure-Balanced Brush Seals

Michael J. Pekris, Gervas Franceschini, David R. H. Gillespie
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2014, 136(6): 062502.
Paper No: GTP-12-1364
https://doi.org/10.1115/1.4026243
Published Online: January 24, 2014
View Article titled, An Investigation of Flow, Mechanical, and Thermal Performance of Conventional and Pressure-Balanced Brush Seals
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Topics: Cavities, Clearances (Engineering), Flow (Dynamics), Pressure, Rotors, Temperature, Torque, Leakage
Proceedings Papers

The Development of a Large Radial Movement Brush Seal

Gervas Franceschini, Terry V. Jones, David R. H. Gillespie
Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 2119-2129, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68891
https://doi.org/10.1115/GT2012-68891
View Paper titled, The Development of a Large Radial Movement Brush Seal
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Topics: Deflection, Engines, Flow measurement, Geometry, Pressure, Rotors, Stiffness, Stress, Torque, Wear
Proceedings Papers

Improved Understanding of Negative Stiffness in Filament Seals

Gervas Franceschini, Ingo H. J. Jahn, Andrew K. Owen, Terry V. Jones, David R. H. Gillespie
Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 2131-2139, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68899
https://doi.org/10.1115/GT2012-68899
View Paper titled, Improved Understanding of Negative Stiffness in Filament Seals
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Topics: Stiffness, Rotors, Displacement, Design, Flow (Dynamics), Fluids, Gas turbines, Geometry, Inertia (Mechanics), Modeling
Proceedings Papers

An Investigation of Flow, Mechanical and Thermal Performance of Conventional and Pressure-Balanced Brush Seals

Michael J. Pekris, Gervas Franceschini, David R. H. Gillespie
Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 2141-2153, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68901
https://doi.org/10.1115/GT2012-68901
View Paper titled, An Investigation of Flow, Mechanical and Thermal Performance of Conventional and Pressure-Balanced Brush Seals
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Topics: Flow (Dynamics), Pressure, Leakage, Design, Engines, Rotors, Torque, Wear, Friction, Fuel consumption
Proceedings Papers

Negative Stiffness in Gas Turbine Leaf Seals

Ingo H. J. Jahn, Andrew K. Owen, Gervas Franceschini, David R. H. Gillespie
Proc. ASME. GT2011, Volume 5: Heat Transfer, Parts A and B, 993-998, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46483
https://doi.org/10.1115/GT2011-46483
View Paper titled, Negative Stiffness in Gas Turbine Leaf Seals
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Topics: Gas turbines, Stiffness, Rotors, Displacement, Pressure, Engineering prototypes, Engines, Flow (Dynamics)
Proceedings Papers

Effect of Geometric Changes in an Idealised Contacting Brush Seal Bristle Pack on Typical Key Performance Measures

Michael J. Pekris, Gervas Franceschini, David R. H. Gillespie
Proc. ASME. GT2011, Volume 5: Heat Transfer, Parts A and B, 999-1010, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46492
https://doi.org/10.1115/GT2011-46492
View Paper titled, Effect of Geometric Changes in an Idealised Contacting Brush Seal Bristle Pack on Typical Key Performance Measures
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Topics: Air flow, Computational fluid dynamics, Deformation, Engineering standards, Experimental design, Flow (Dynamics), Fuel consumption, Gas turbines, Geometry, Leakage
Journal Articles

Improved Understanding of Blow-Down in Filament Seals

Gervas Franceschini, Terry V. Jones, David R. H. Gillespie
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2010, 132(4): 041004.
https://doi.org/10.1115/1.3213552
Published Online: April 26, 2010
View Article titled, Improved Understanding of Blow-Down in Filament Seals
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Topics: Computer simulation, Flow (Dynamics), Pressure, Strips, Rotors, Momentum, Wind tunnels
Proceedings Papers

Improved Understanding of Blow-Down in Filament Seals

Gervas Franceschini, Terry V. Jones, David R. H. Gillespie
Proc. ASME. GT2008, Volume 4: Heat Transfer, Parts A and B, 1635-1646, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-51197
https://doi.org/10.1115/GT2008-51197
View Paper titled, Improved Understanding of Blow-Down in Filament Seals
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Topics: Flow (Dynamics), Gas turbines, Pressure, Rotors
Proceedings Papers

Experimental Characterisation of the Stiffness and Leakage of a Prototype Leaf Seal for Turbine Applications

Ingo H. J. Jahn, Andrew K. Owen, Gervas Franceschini, David Gillespie
Proc. ASME. GT2008, Volume 4: Heat Transfer, Parts A and B, 1657-1666, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-51206
https://doi.org/10.1115/GT2008-51206
View Paper titled, Experimental Characterisation of the Stiffness and Leakage of a Prototype Leaf Seal for Turbine Applications
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Topics: Engineering prototypes, Experimental characterization, Leakage, Stiffness, Turbines, Clearances (Engineering), Damping, Design, Flow (Dynamics), Geometry