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Gregory M. Laskowski
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Proceedings Papers

Unsteady Flow Simulations of an Axial Compressor Cascade Subjected to Free Stream Wakes

Benjamin Duda, Gregory M. Laskowski
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A001, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-78007
https://doi.org/10.1115/GT2022-78007
View Paper titled, Unsteady Flow Simulations of an Axial Compressor Cascade Subjected to Free Stream Wakes
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Topics: Cascades (Fluid dynamics), Compressors, Reynolds-averaged Navier–Stokes equations, Simulation, Unsteady flow, Wakes
Proceedings Papers

Towards High-Order Large Eddy Simulation of Aero-Thermal Flows for Turbomachinery Applications

R. Bhaskaran, Feilin Jia, Gregory M. Laskowski, Z. J. Wang, Umesh Paliath
Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT41A011, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63358
https://doi.org/10.1115/GT2017-63358
View Paper titled, Towards High-Order Large Eddy Simulation of Aero-Thermal Flows for Turbomachinery Applications
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Topics: Flow (Dynamics), Large eddy simulation, Turbomachinery, Blades, Cascades (Fluid dynamics), Turbines, Wakes, Algorithms, Heat transfer, Heat transfer coefficients
Journal Articles

Unsteady Adjoint of Pressure Loss for a Fundamental Transonic Turbine Vane

Chaitanya Talnikar, Qiqi Wang, Gregory M. Laskowski
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. March 2017, 139(3): 031001.
Paper No: TURBO-16-1217
https://doi.org/10.1115/1.4034800
Published Online: November 8, 2016
View Article titled, Unsteady Adjoint of Pressure Loss for a Fundamental Transonic Turbine Vane
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Topics: Design, Flow (Dynamics), Fluid dynamics, Pressure, Simulation, Turbines, Turbulence, Viscosity, Navier-Stokes equations, Boundary layers
Proceedings Papers

Detailed Large Eddy Simulations (LES) of Multi-Hole Effusion Cooling Flow for Gas Turbines

Yonduck Sung, Anne L. Dord, Gregory M. Laskowski, Lee Shunn, Greg Natsui, Jay Kapat
Proc. ASME. GT2016, Volume 5B: Heat Transfer, V05BT17A017, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57957
https://doi.org/10.1115/GT2016-57957
View Paper titled, Detailed Large Eddy Simulations (LES) of Multi-Hole Effusion Cooling Flow for Gas Turbines
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Topics: Cooling, Flow (Dynamics), Gas turbines, Large eddy simulation, Density, Jets, Carbon dioxide, Coolants, Computation, Fluids
Proceedings Papers

Unsteady Adjoint of Pressure Loss for a Fundamental Transonic Turbine Vane

Chaitanya Talnikar, Qiqi Wang, Gregory M. Laskowski
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT13A009, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56689
https://doi.org/10.1115/GT2016-56689
View Paper titled, Unsteady Adjoint of Pressure Loss for a Fundamental Transonic Turbine Vane
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Topics: Pressure, Turbines, Engineering simulation, Simulation, Boundary layers, Large eddy simulation, Design, Dynamics (Mechanics), Flow (Dynamics), Optimization
Proceedings Papers

Experimental and Numerical Investigation of Effusion Cooling for High Pressure Turbine Components: Part 2 — Numerical Results

Gustavo A. Ledezma, Julienne Lachance, Guanghua Wang, Anquan Wang, Gregory M. Laskowski
Proc. ASME. GT2016, Volume 5B: Heat Transfer, V05BT17A002, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56400
https://doi.org/10.1115/GT2016-56400
View Paper titled, Experimental and Numerical Investigation of Effusion Cooling for High Pressure Turbine Components: Part 2 — Numerical Results
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Topics: Cooling, High pressure (Physics), Turbine components, Computer simulation, Film cooling, Flat plates, Large eddy simulation, Numerical analysis, Paints, Physics
Proceedings Papers

Uncertainty Quantification in Turbomachinery Simulations

Michael Emory, Gianluca Iaccarino, Gregory M. Laskowski
Proc. ASME. GT2016, Volume 2C: Turbomachinery, V02CT39A028, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56798
https://doi.org/10.1115/GT2016-56798
View Paper titled, Uncertainty Quantification in Turbomachinery Simulations
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Topics: Engineering simulation, Simulation, Turbomachinery, Uncertainty quantification, Uncertainty, Cascades (Fluid dynamics), Chaos, Computer simulation, Design, Errors
Journal Articles

The Effect of Rib Turbulators on Film Cooling Effectiveness of Round Compound Angle Holes Fed by an Internal Cross-Flow

Sean R. Klavetter, John W. McClintic, David G. Bogard, Jason E. Dees, Gregory M. Laskowski, Robert Briggs
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. December 2016, 138(12): 121006.
Paper No: TURBO-16-1047
https://doi.org/10.1115/1.4032928
Published Online: June 14, 2016
View Article titled, The Effect of Rib Turbulators on Film Cooling Effectiveness of Round Compound Angle Holes Fed by an Internal Cross-Flow
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Topics: Coolants, Cross-flow, Film cooling, Cooling, Flow (Dynamics), Jets, Heat transfer, Vortices, Temperature
Proceedings Papers

Experimental and Numerical Investigations of the Heat Transfer and Flow Field in a Trailing Edge Cooling Geometry: Part 2 — LES and Hybrid RANS/LES Study

Elizaveta Ivanova, Gustavo Ledezma, Guanghua Wang, Gregory M. Laskowski
Proc. ASME. GT2015, Volume 5B: Heat Transfer, V05BT12A041, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43603
https://doi.org/10.1115/GT2015-43603
View Paper titled, Experimental and Numerical Investigations of the Heat Transfer and Flow Field in a Trailing Edge Cooling Geometry: Part 2 — LES and Hybrid RANS/LES Study
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Topics: Cooling, Flow (Dynamics), Geometry, Heat transfer, Reynolds-averaged Navier–Stokes equations, Simulation, Adiabatic cooling, Eddies (Fluid dynamics), Large eddy simulation, Numerical analysis
Proceedings Papers

The Effect of Rib Turbulators on Film Cooling Effectiveness of Round Compound Angle Holes Fed by an Internal Cross-Flow

Sean R. Klavetter, John W. McClintic, David G. Bogard, Jason E. Dees, Gregory M. Laskowski, Robert Briggs
Proc. ASME. GT2015, Volume 5B: Heat Transfer, V05BT12A049, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43947
https://doi.org/10.1115/GT2015-43947
View Paper titled, The Effect of Rib Turbulators on Film Cooling Effectiveness of Round Compound Angle Holes Fed by an Internal Cross-Flow
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Topics: Cross-flow, Film cooling, Coolants, Cooling, Blades, Channel flow, Density, Engines, Gas turbines, Heat transfer
Proceedings Papers

Near-Hole Thermal Field Measurements for Round Compound Angle Film Cooling Holes Fed by Cross-Flow

John W. McClintic, Ellen K. Wilkes, David G. Bogard, Jason E. Dees, Gregory M. Laskowski, Robert Briggs
Proc. ASME. GT2015, Volume 5B: Heat Transfer, V05BT12A050, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43949
https://doi.org/10.1115/GT2015-43949
View Paper titled, Near-Hole Thermal Field Measurements for Round Compound Angle Film Cooling Holes Fed by Cross-Flow
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Topics: Cross-flow, Film cooling, Coolants, Engines, Jets, Boundary layers, Cooling, Density, Flow (Dynamics), Turbulence
Proceedings Papers

Effects of Crossflow in an Internal-Cooling Channel on Film Cooling of a Flat Plate Through Compound-Angle Holes

Zachary T. Stratton, Tom I-P. Shih, Gregory M. Laskowski, Brian Barr, Robert Briggs
Proc. ASME. GT2015, Volume 5B: Heat Transfer, V05BT12A022, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42771
https://doi.org/10.1115/GT2015-42771
View Paper titled, Effects of Crossflow in an Internal-Cooling Channel on Film Cooling of a Flat Plate Through Compound-Angle Holes
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Topics: Cooling, Film cooling, Flat plates, Computational fluid dynamics, Flow (Dynamics), Coolants, Engineering simulation, Reynolds-averaged Navier–Stokes equations, Simulation, Density
Journal Articles

The Effect of Internal Crossflow on the Adiabatic Effectiveness of Compound Angle Film Cooling Holes

John W. McClintic, Sean R. Klavetter, James R. Winka, Joshua B. Anderson, David G. Bogard, Jason E. Dees, Gregory M. Laskowski, Robert Briggs
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. July 2015, 137(7): 071006.
Paper No: TURBO-14-1266
https://doi.org/10.1115/1.4029157
Published Online: July 1, 2015
View Article titled, The Effect of Internal Crossflow on the Adiabatic Effectiveness of Compound Angle Film Cooling Holes
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Topics: Coolants, Film cooling, Flow (Dynamics), Temperature, Heat conduction, Heat transfer, Jets, Flat plates, Cooling
Proceedings Papers

Computational Assessment of Inlet Turbulence on Boundary Layer Development and Momentum/Thermal Wakes for High Pressure Turbine Nozzle and Blade

James E. Kopriva, Gregory M. Laskowski, M. Reza H. Sheikhi
Proc. ASME. IMECE2014, Volume 8B: Heat Transfer and Thermal Engineering, V08BT10A006, November 14–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2014-38620
https://doi.org/10.1115/IMECE2014-38620
View Paper titled, Computational Assessment of Inlet Turbulence on Boundary Layer Development and Momentum/Thermal Wakes for High Pressure Turbine Nozzle and Blade
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Topics: Blades, Boundary layers, High pressure (Physics), Momentum, Nozzles, Turbines, Turbulence, Wakes, Cooling, Design
Proceedings Papers

LES and Hybrid RANS/LES of a Fundamental Trailing Edge Slot

Elizaveta Ivanova, Gregory M. Laskowski
Proc. ASME. GT2014, Volume 5B: Heat Transfer, V05BT13A030, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25906
https://doi.org/10.1115/GT2014-25906
View Paper titled, LES and Hybrid RANS/LES of a Fundamental Trailing Edge Slot
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Topics: Reynolds-averaged Navier–Stokes equations, Heat transfer, Simulation, Turbulence, Boundary-value problems, Eddies (Fluid dynamics), Geometry, Large eddy simulation, Stress
Proceedings Papers

The Effect of Internal Cross-Flow on the Adiabatic Effectiveness of Compound Angle Film Cooling Holes

John W. McClintic, Sean R. Klavetter, Joshua B. Anderson, James R. Winka, David G. Bogard, Jason E. Dees, Gregory M. Laskowski, Robert Briggs
Proc. ASME. GT2014, Volume 5B: Heat Transfer, V05BT13A035, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25975
https://doi.org/10.1115/GT2014-25975
View Paper titled, The Effect of Internal Cross-Flow on the Adiabatic Effectiveness of Compound Angle Film Cooling Holes
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Topics: Cross-flow, Film cooling, Flow (Dynamics), Coolants, Gas turbines, Airfoils, Density, Flat plates, Reynolds number, Turbulence
Proceedings Papers

Assessment of High Pressure Cooled and Uncooled Turbine Blade Wakes via RANS and URANS at Engine Scale Conditions

James E. Kopriva, Gregory M. Laskowski, M. Reza H. Sheikhi
Proc. ASME. GT2013, Volume 6B: Turbomachinery, V06BT37A005, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-94285
https://doi.org/10.1115/GT2013-94285
View Paper titled, Assessment of High Pressure Cooled and Uncooled Turbine Blade Wakes via RANS and URANS at Engine Scale Conditions
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Topics: Engines, High pressure (Physics), Reynolds-averaged Navier–Stokes equations, Turbine blades, Wakes, Boundary layers, Computer simulation, Flow (Dynamics), Pressure, Separation (Technology)
Journal Articles

Overall and Adiabatic Effectiveness Values on a Scaled Up, Simulated Gas Turbine Vane

Jason E. Dees, David G. Bogard, Gustavo A. Ledezma, Gregory M. Laskowski
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. September 2013, 135(5): 051017.
Paper No: TURBO-12-1039
https://doi.org/10.1115/1.4023105
Published Online: June 28, 2013
View Article titled, Overall and Adiabatic Effectiveness Values on a Scaled Up, Simulated Gas Turbine Vane
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Topics: Coolants, Cooling, Film cooling, Gas turbines, Momentum, Temperature, Heat transfer, Airfoils, Flow (Dynamics), Geometry
Journal Articles

Momentum and Thermal Boundary Layer Development on an Internally Cooled Turbine Vane

Jason E. Dees, David G. Bogard, Gustavo A. Ledezma, Gregory M. Laskowski, Anil K. Tolpadi
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2012, 134(6): 061004.
https://doi.org/10.1115/1.4006281
Published Online: August 27, 2012
View Article titled, Momentum and Thermal Boundary Layer Development on an Internally Cooled Turbine Vane
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Topics: Airfoils, Boundary layers, Momentum, Pressure, Suction, Thermal boundary layers, Turbulence, Turbines, Pressure gradient, Temperature profiles
Journal Articles

Experimental Measurements and Computational Predictions for an Internally Cooled Simulated Turbine Vane With 90 Degree Rib Turbulators

Jason E. Dees, David G. Bogard, Gustavo A. Ledezma, Gregory M. Laskowski, Anil K. Tolpadi
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2012, 134(6): 061005.
https://doi.org/10.1115/1.4006282
Published Online: August 27, 2012
View Article titled, Experimental Measurements and Computational Predictions for an Internally Cooled Simulated Turbine Vane With 90 Degree Rib Turbulators
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Topics: Airfoils, Circuits, Coolants, Cooling, Flow (Dynamics), Heat transfer, Heat transfer coefficients, Pressure, Suction, Temperature