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Proceedings Papers

Investigation of Radial Preswirl Nozzle – Coverplate System Using CFD

Erinc Erdem, Abdulkadir Yalcinkaya, Mustafa Cem Sertcakan, Sinan Sal, Yahya Dogu
Proc. ASME. GT2023, Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V07BT14A019, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103646
https://doi.org/10.1115/GT2023-103646
View Paper titled, Investigation of Radial Preswirl Nozzle – Coverplate System Using CFD
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Topics: Computational fluid dynamics, Nozzles
Proceedings Papers

Effects of Eccentricity on Glass Temperatures in the Neck-Down Stage of the Optical Fiber Drawing Process

Yahya Dogu, Deborah A. Kaminski
Proc. ASME. IMECE97, Heat Transfer: Volume 1, 89-100, November 16–21, 1997
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1997-0834
https://doi.org/10.1115/IMECE1997-0834
View Paper titled, Effects of Eccentricity on Glass Temperatures in the Neck-Down Stage of the Optical Fiber Drawing Process
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Topics: Glass, Optical fiber, Temperature, Furnaces, Preforms, Radiation (Physics), Viscosity, Flow (Dynamics), Heat transfer, Temperature gradient
Proceedings Papers

Asymmetric Glass Temperature due to Cold-Spots on the Furnace Wall in the Optical Fiber Drawing Process

Yahya Dogu, Deborah A. Kaminski
Proc. ASME. IMECE97, Heat Transfer: Volume 1, 101-111, November 16–21, 1997
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1997-0835
https://doi.org/10.1115/IMECE1997-0835
View Paper titled, Asymmetric Glass Temperature due to Cold-Spots on the Furnace Wall in the Optical Fiber Drawing Process
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Topics: Furnaces, Glass, Optical fiber, Temperature, Preforms, Fibers, Flow (Dynamics), Radiation (Physics), Approximation, Convection
Proceedings Papers

Design and CFD Analysis of a 150kW 8-Stage ORC-ROT (Organic Rankine Cycle-Radial Outflow Turbine) and Performance Degradation due to Blade Tip Clearance of Labyrinth Seal

Yahya Doğu, İbrahim Günaydın, Zeynal Kılıçaslan, Tacettin İleri, Sinan Soğancı
Proc. ASME. GT2018, Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems, V003T28A004, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75612
https://doi.org/10.1115/GT2018-75612
View Paper titled, Design and CFD Analysis of a 150kW 8-Stage ORC-ROT (Organic Rankine Cycle-Radial Outflow Turbine) and Performance Degradation due to Blade Tip Clearance of Labyrinth Seal
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Topics: Blades, Clearances (Engineering), Computational fluid dynamics, Cycles, Design, Organic Rankine cycle, Outflow, Turbines, Geometry, Leakage
Journal Articles

Flow Resistance Coefficients of Porous Brush Seal as a Function of Pressure Load

Yahya Doğu, Mustafa C. Sertçakan, Koray Gezer, Mustafa Kocagül
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 082504.
Paper No: GTP-17-1635
https://doi.org/10.1115/1.4038994
Published Online: April 25, 2018
View Article titled, Flow Resistance Coefficients of Porous Brush Seal as a Function of Pressure Load
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Topics: Computational fluid dynamics, Flow (Dynamics), Leakage, Pressure, Stress, Calibration, Clearances (Engineering)
Proceedings Papers

Flow Resistance Coefficients of Porous Brush Seal As a Function of Pressure Load

Yahya Doğu, Mustafa C. Sertçakan, Koray Gezer, Mustafa Kocagül
Proc. ASME. GT2017, Volume 5B: Heat Transfer, V05BT15A031, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64864
https://doi.org/10.1115/GT2017-64864
View Paper titled, Flow Resistance Coefficients of Porous Brush Seal As a Function of Pressure Load
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Topics: Flow (Dynamics), Pressure, Stress, Leakage, Temperature, Anisotropy, Calibration, Computational fluid dynamics, Porous materials, Rotors
Journal Articles

Leakage Degradation of Straight Labyrinth Seal Due to Wear of Round Tooth Tip and Acute Trapezoidal Rub-Groove

Yahya Dogu, Mustafa C. Sertçakan, Koray Gezer, Mustafa Kocagül, Ercan Arıcan, Murat S. Ozmusul
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2017, 139(7): 072506.
Paper No: GTP-16-1399
https://doi.org/10.1115/1.4035657
Published Online: March 7, 2017
View Article titled, Leakage Degradation of Straight Labyrinth Seal Due to Wear of Round Tooth Tip and Acute Trapezoidal Rub-Groove
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Topics: Clearances (Engineering), Computational fluid dynamics, Flow (Dynamics), Leakage, Shapes, Wear, Stators, Pressure
Journal Articles

Labyrinth Seal Leakage Degradation Due to Various Types of Wear

Yahya Dogu, Mustafa C. Sertçakan, Koray Gezer, Mustafa Kocagül, Ercan Arıcan, Murat S. Ozmusul
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2017, 139(6): 062504.
Paper No: GTP-16-1400
https://doi.org/10.1115/1.4035658
Published Online: February 1, 2017
View Article titled, Labyrinth Seal Leakage Degradation Due to Various Types of Wear
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Topics: Clearances (Engineering), Flow (Dynamics), Leakage, Shapes, Wear, Pressure, Computational fluid dynamics, Stators, Discharge coefficient
Proceedings Papers

Leakage Degradation of Straight Labyrinth Seal due to Wear of Round Tooth Tip and Acute Trapezoidal Rub-Groove

Yahya Dogu, Mustafa C. Sertçakan, Koray Gezer, Mustafa Kocagül, Ercan Arıcan, Murat S. Ozmusul
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT15A032, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57928
https://doi.org/10.1115/GT2016-57928
View Paper titled, Leakage Degradation of Straight Labyrinth Seal due to Wear of Round Tooth Tip and Acute Trapezoidal Rub-Groove
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Topics: Leakage, Wear, Shapes, Stators, Clearances (Engineering), Flow (Dynamics), Rotors, Pressure, Computational fluid dynamics, Dimensions
Proceedings Papers

Labyrinth Seal Leakage Degradation due to Various Types of Wear

Yahya Dogu, Mustafa C. Sertçakan, Koray Gezer, Mustafa Kocagül, Ercan Arıcan, Murat S. Ozmusul
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT15A033, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57944
https://doi.org/10.1115/GT2016-57944
View Paper titled, Labyrinth Seal Leakage Degradation due to Various Types of Wear
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Topics: Leakage, Wear, Clearances (Engineering), Shapes, Stators, Computational fluid dynamics, Durability, Engine design, Engines, Gas turbines
Journal Articles

Computational Fluid Dynamics Investigation of Brush Seal Leakage Performance Depending on Geometric Dimensions and Operating Conditions

Yahya Dogu, Ahmet S. Bahar, Mustafa C. Sertçakan, Altuğ Pişkin, Ercan Arıcan, Mustafa Kocagül
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2016, 138(3): 032506.
Paper No: GTP-15-1322
https://doi.org/10.1115/1.4031370
Published Online: October 6, 2015
View Article titled, Computational Fluid Dynamics Investigation of Brush Seal Leakage Performance Depending on Geometric Dimensions and Operating Conditions
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Topics: Clearances (Engineering), Computational fluid dynamics, Dimensions, Flow (Dynamics), Leakage, Pressure, Rotors, Porous materials
Journal Articles

Computational Fluid Dynamics Investigation of Labyrinth Seal Leakage Performance Depending on Mushroom-Shaped Tooth Wear

Yahya Dogu, Mustafa C. Sertçakan, Ahmet S. Bahar, Altuğ Pişkin, Ercan Arıcan, Mustafa Kocagül
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2016, 138(3): 032503.
Paper No: GTP-15-1319
https://doi.org/10.1115/1.4031369
Published Online: September 29, 2015
View Article titled, Computational Fluid Dynamics Investigation of Labyrinth Seal Leakage Performance Depending on Mushroom-Shaped Tooth Wear
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Topics: Clearances (Engineering), Computational fluid dynamics, Leakage, Pressure, Wear, Rotors, Flow (Dynamics)
Proceedings Papers

CFD Investigation of Labyrinth Seal Leakage Performance Depending on Mushroom Shaped Tooth Wear

Yahya Doğu, Mustafa C. Sertçakan, Ahmet S. Bahar, Altuğ Pişkin, Ercan Arıcan, Mustafa Kocagül
Proc. ASME. GT2015, Volume 5C: Heat Transfer, V05CT15A034, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43607
https://doi.org/10.1115/GT2015-43607
View Paper titled, CFD Investigation of Labyrinth Seal Leakage Performance Depending on Mushroom Shaped Tooth Wear
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Topics: Computational fluid dynamics, Leakage, Wear, Clearances (Engineering), Rotors, Stators, Flow (Dynamics), Pressure, Damage, Engines
Proceedings Papers

CFD Investigation of Brush Seal Leakage Performance Depending on Geometric Dimensions and Operating Conditions

Yahya Doğu, Mustafa C. Sertçakan, Ahmet S. Bahar, Altuğ Pişkin, Ercan Arıcan, Mustafa Kocagül
Proc. ASME. GT2015, Volume 5C: Heat Transfer, V05CT15A035, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43638
https://doi.org/10.1115/GT2015-43638
View Paper titled, CFD Investigation of Brush Seal Leakage Performance Depending on Geometric Dimensions and Operating Conditions
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Topics: Computational fluid dynamics, Dimensions, Leakage, Design, Clearances (Engineering), Flow (Dynamics), Geometry, Porous materials, Pressure, Rotors
Proceedings Papers

A Simple FEM Model for Foil Bearings Under Differential Pressure

Serdar Aksoy, Mahmut Faruk Aksit, Yahya Dogu
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 163-166, October 17–20, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2010-41257
https://doi.org/10.1115/IJTC2010-41257
View Paper titled, A Simple FEM Model for Foil Bearings Under Differential Pressure
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Topics: Finite element methods, Finite element model, Foil bearings, Pressure
Proceedings Papers

Oil Temperature Analysis of Brush Seals

E. Tolga Duran, Mahmut F. Aksit, Yahya Dogu
Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 481-483, October 22–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2007-44397
https://doi.org/10.1115/IJTC2007-44397
View Paper titled, Oil Temperature Analysis of Brush Seals
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Topics: Temperature, Pressure, Rotors, Leakage, Aircraft engines, Clearances (Engineering), Navier-Stokes equations, Sealing (Process), Temperature distribution, Thermal energy
Proceedings Papers

Investigation of Brush Seal Flow Characteristics Using Bulk Porous Medium Approach

Yahya Dogu
Proc. ASME. GT2003, Volume 5: Turbo Expo 2003, Parts A and B, 1091-1101, June 16–19, 2003
Publisher: American Society of Mechanical Engineers
Paper No: GT2003-38970
https://doi.org/10.1115/GT2003-38970
View Paper titled, Investigation of Brush Seal Flow Characteristics Using Bulk Porous Medium Approach
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Topics: Flow (Dynamics), Porous materials, Pressure, Permeability, Anisotropy, Computational fluid dynamics, Flutter (Aerodynamics), Leakage, Rotors
Proceedings Papers

Brush Seal Temperature Distribution Analysis

Yahya Dogu, Mahmut F. Aksit
Proc. ASME. GT2005, Volume 3: Turbo Expo 2005, Parts A and B, 1237-1248, June 6–9, 2005
Publisher: American Society of Mechanical Engineers
Paper No: GT2005-69120
https://doi.org/10.1115/GT2005-69120
View Paper titled, Brush Seal Temperature Distribution Analysis
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Topics: Computational fluid dynamics, Heat, Heat transfer, Temperature distribution, Temperature, Flow (Dynamics), Heat flux, Rotors, Stiffness, Convection
Journal Articles

Evaluation of Flow Behavior for Clearance Brush Seals

Yahya Dogu, Mahmut F. Aksit, Mehmet Demiroglu, Osman Saim Dinc
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2008, 130(1): 012507.
https://doi.org/10.1115/1.2770479
Published Online: January 9, 2008
View Article titled, Evaluation of Flow Behavior for Clearance Brush Seals
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Topics: Clearances (Engineering), Flow (Dynamics), Porous materials, Pressure, Rotors, Computational fluid dynamics, Leakage, Wear
Journal Articles

Brush Seal Temperature Distribution Analysis

Yahya Dogu, Mahmut F. Aksit
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. July 2006, 128(3): 599–609.
https://doi.org/10.1115/1.2135817
Published Online: September 6, 2005
View Article titled, Brush Seal Temperature Distribution Analysis
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Topics: Computational fluid dynamics, Convection, Flow (Dynamics), Heat, Heat flux, Heat transfer, Pressure, Rotors, Stress, Temperature