Peter Ott

Office: ME A2 434
EPFL › STI › STI-SGM › SGM-ENS

Expertise

Experimental and numerical investigation of steady and unsteady flow in turbomachinery, including heat transfer phenomena.

Mission

The work conducted by the group is focused on the computation and experimental investigation of steady and unsteady flow in turbomachinery (aeroengines, steam and gas turbines), including heat transfer phenomena. This research is conducted in close association with our industrial and academic partners with the primary goal of improving the overall performance and reliability of turbomachinery.The research subjects at the LTT are closely related to real applications and are addressed through a direct collaboration with industry. With the increasing need of cost-efficient, powerful and flexible turbomachines, the investigation of turbomachinery flow has become critical to improving their design.

Publications

Selected publications

Combined 3-D flow and heat transfer measurements in a 2-pass internal coolant passage of gas turbine airfoils.

Chanteloup, D., Y. Juaneda, et al.
Published in Journal of Turbomachinery-Transactions of the Asme 124(4): 710-718., 2002 in

Flow characteristics in two-leg internal coolant passages of gas turbine airfoils with film-cooling hole ejection.

Chanteloup, D. and A. Bolcs
Published in Journal of Turbomachinery-Transactions of the Asme 124(3): 499-507., 2002 in

Particle image velocimetry investigation of the flow characteristics in two-leg internal coolant passages of gas turbine airfoils.

Chateloup, D. and A. Bolcs
Published in Proceedings of the Institution of Mechanical Engineers Part a- Journal of Power and Energy 215(A6): 743-752., 2001 in

Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC

G. Aad; B. Abbott; K. Abeling; N. J. Abicht; S. H. Abidi et al.

Physical Review Letters. 2024-01-11. DOI : 10.1103/PhysRevLett.132.021803.

Peter Ott

Expertise

Mission

Selected publications

Combined 3-D flow and heat transfer measurements in a 2-pass internal coolant passage of gas turbine airfoils.

Flow characteristics in two-leg internal coolant passages of gas turbine airfoils with film-cooling hole ejection.

Particle image velocimetry investigation of the flow characteristics in two-leg internal coolant passages of gas turbine airfoils.

Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC

Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at √s=7 and 8 TeV

Celebration of Professor Bernhard Weigand on his 60th birthday

Experimental investigation and analysis of sequential jet impingement concepts for enhanced turbine cooling

Transient Liquid Crystal Thermography Using a Time Varying Surface Heat Flux

Heat Transfer Enhancement in a Double Sequential Impingement Channel

Experimental investigation of sequential narrow impingement channels for turbine cooling

Mechanisms of Control Authority by Nanosecond Pulsed Dielectric Barrier Discharge Actuators on Flow Separation

Narrow Impingement Channels: Recent Advancements and Future Directions

Measurement of the single top quark and antiquark production cross sections in the $t$ channel and their ratio in proton-proton collisions at $\sqrt{s}=$ 13 TeV

Evaluation of Heat Transfer Coefficients for an Impingement Cooling Cascade: Experimental Challenges and Preliminary Results

Ammonia toxicity: from head to toe?

OES Characterization of Steamers in a Nanosecond Pulsed SBDB Using N2 and Ar Transitions

Aerothermal Investigation of a Single Row Divergent Narrow Impingement Channel by Particle Image Velocimetry and Liquid Crystal Thermography

Investigation of Nanosecond Pulse Dielectric Barrier Discharges in Still Air and in Transonic Flow by Optical Methods

Improved Accuracy in Jet Impingement Heat Transfer Experiments Considering the Layer Thicknesses of a Triple Thermochromic Liquid Crystal Coating

On the Effects of Coating Thickness in Transient Heat Transfer Experiments Using Thermochromic Liquid Crystals

High-Resolution Heat Transfer Measurements and Crossflow Regulation in Narrow Impingement Cooling Channels with Divergent Geometries

Impact of ns-DBD Plasma Actuation on the Boundary Layer Transition Using Convective Heat Transfer Measurements

Investigation of Flow Separation Control by Nanosecond Pulsed Dielectric Barrier Discharge Actuators

Heat Transfer Characteristics of High Crossflow Impingement Channels: Effect of Number of Holes

Aeroeleasic Investigation of an Annular Transonic Compressor Cascade: Experimental Results

Turbulent scale resolving modelling of rotating stall in low-pressure steam turbines operated under low volume flow conditions

On the Applicability of a Triple Thermochromic Liquid Crystal Layer for Transient Heat Transfer Experiments

Heat Transfer Characteristics of High Crossflow Impingement Channels: Effect of Number of Holes

A method to visualise near wall fluid flow patterns using locally resolved convective heat transfer experiments

Effect of Varying Jet Diameter on the Heat Transfer Distributions of Narrow Impingement Channels

Fluid Flow Pattern Visualisation: An Alternative Approach Using Highly Resolved Heat Transfer Experiments

EPFL-GTT: Group of Thermal Turbomachinery

Plasma Diagnostics and Modelling of Nanosecond Pulsed Surface Dielectric Barrier Discharge Actuators

Experimental Investigation of Pulsed DBD Plasma Actuators for Aerodynamic Flow Control

Experimental Investigation of Blade Group Vibrations in an Axial Turbine Cascade

Detailed Heat Transfer Distributions of Narrow Impingement Channels with Varying Jet Diameter

Experimental and Numerical Assessment of the Aeroelastic Stability of Blade Pair Packages

Detailed Heat Transfer Distributions of Narrow Impingement Channels for Cast-In Turbine Airfoils

Detailed heat transfer distributions of narrow impingement channels for integrally cast turbine airfoils

Unsteady aerodynamics of low-pressure steam turbines operating under low volume flow conditions

Unsteady Aerodynamics of Low-Pressure Steam Turbines Operating Under Low Volume Flow

Hole Staggering Effect on the Cooling Performance of Narrow Impingement Channels Using the Transient Liquid Crystal Technique

A Comparative Study of the Local Heat Transfer Distributions Around Various Surface Mounted Obstacles

Numerical and Experimental Investigations of an Annular Transonic Compressor Cascade Considering Leakage Flows

Local Heat Transfer Distributions of Small Impingement Configurations: A Detailed Experimental Procedure Using Transient Heat Transfer Methods

Experimental and numerical investigation of narrow impingement cooling channels

Experimental Aeroelastic Investigation of Vibrating Turbine Blade Clusters

Unsteady Aerodynamics of Low-Pressure Steam Turbines Operating Under Low Volume Flow

Experimental and Numerical Investigation of a Fully Confined Impingement Round Jet

Investigation of Flow Separation Control by Nanosecond Pulsed Dielectric Barrier Discharge Actuators

Experimental Investigation of Pulsed Dielectric Barrier Discharge Actuators in Sub- and Transonic Flow

Experimental Aeroelastic Analysis of Clustered Turbine Blades Vibrating in Mixed Torsion/Bending Mode

Unsteady Aerodynamics of Low-Pressure Steam Turbines Operating Under Low Volume Flow

Evolution of the Aerodynamic Stability of an Oscillating Annular Compressor Cascade with Inlet Reverse Flow Condition Variations

Experimental Aeroelastic Investigation of Vibrating Turbine Blade Clusters

High Voltage Pulsed DBD Effects on the Aerodynamic Performances and on the Shock Buffet

Numerical and Experimental Investigation of the Aerodynamic Excitation of a Model Low-Pressure Steam Turbine Stage Operating Under Low Volume Flow

High Voltage Pulsed DBD Effects on the Aerodynamic Performances and on the Shock Buffet

Thermocouple Thermal Inertia Effects on Impingement Heat Transfer Experiments Using the Transient Liquid Crystal Technique

Characterization of Kinetic Processes in Nano Pulsed SDBD

Experimental Investigations of an Oscillating Annular Compressor Cascade at Reverse Flow Conditions

Aerodynamic Excitation of a Model Low-Pressure Steam Turbine Stage Under Low Volume Flow

Investigation of High-Pressure Turbine Endwall Film-Cooling Performance Under Realistic Inlet Conditions

Hole Staggering Effect on the Cooling Performance of Narrow Impingement Channels

Numerical and Experimental Investigation of the Aerodynamic Excitation of a Model Low-Pressure Steam Turbine Stage Operating Under Low Volume Flow

Swirl Jets in Crossflow at Low Velocity Ratios

Experimental Investigation of the Aeroelastic Stability of an Annular Compressor Cascade at Reverse Flow Conditions

Heat Transfer and Performance Characteristics of Axial Cooling Fans with Downstream Guide Vanes

Influence of Thermocouple Thermal Inertia in Impingement Heat Transfer Experiments Using Transient Techniques

Investigation of High Pressure Turbine End-Wall Film Cooling Performances under Realistic Inlet Conditions

Investigation on the Three-Dimensional Flow Mechanisms in Annular Axial Compressor Cascades for Aero Engines with Flow Control by Aspiration on the Hub and on the Blades

Effect of Stators on the Performance and the Thermal Capabilities of Small Axial Cooling Fans

Interaction Between Nanosecond Pulse DBD Actuators and Transonic Flow

Aeroelasticity at Reversed Flow Conditions – Part 1: Numerical and Experimental Investigations of a Compressor Cascade with Controlled Vibration

Electron temperature measurements using N2 and Argon transitions in an ATP fast pulsed DBD

Experimental Investigations of the Aerodynamics of an Annular Compressor Cascade at Reversed Flow Conditions