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Peter Ott

Cette personne a quitté l’EPFL

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Publications associées (63)

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Experimental and numerical investigation of narrow impingement cooling channels

Peter Ott, Bernhard Weigand, Alexandros Terzis

Impingement cooling effectiveness of gas turbine vanes and blades can be further increased due to the manufacturing feasibility of integrally cast airfoils which can provide narrow impingement cooling cavities. This study examines experimentally using the ...

Elsevier2013

Swirl Jet and Crossflow Interaction at Low Velocity Ratios and Incompressible Flows

Peter Ott, Alexandros Terzis

Swirl jets in crosflow are investigated experimentally and numerically. The main difference with non-swirl cases is an asymmetry of the dominant kidney vortex and a slight distortion of the jet trace downstream of the injection hole. Jet rotation, at relat ...

2011

Effects of a surface dielectric barrier discharge on transonic flows around an airfoil

Christoph Hollenstein, Pénélope Leyland, Peter Ott, Samantha Pavon

2009

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

Peter Ott, Bernhard Weigand, Alexandros Terzis, Guillaume Wagner

This study examines experimentally the cooling performance of narrow impingement channels as could be cast-in in modern turbine airfoils. Full surface heat transfer coefficients are evaluated for the target plate and the sidewalls of the channels using the ...

American Society of Mechanical Engineers2014

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

Peter Ott, Bernhard Weigand, Alexandros Terzis

The development of integrally cast turbine airfoils allows the production of narrow impingement channels in a double-wall configuration, where the coolant is practically injected within the wall of the airfoil providing increased heat transfer capabilities ...

Asme2015

Effects of high-speed airflows on a surface dielectric barrier discharge

Christoph Hollenstein, Peter Ott, Pénélope Leyland, Samantha Pavon

A detailed study of the interaction between high-speed gas flows and surface dielectric barrier discharges (DBD) is presented. In the present paper, it is demonstrated that a DBD can be sustained in transonic airflows, up to isentropic Mach numbers of 1.1. ...

2007

Heat Transfer Enhancement in a Double Sequential Impingement Channel

Peter Ott, Michele Gaffuri

Sequential impingement channels can reduce the adverse effect of crossflow in narrow impingement channels, as well as increase the cooling efficiency. In this work, sequential impingement channels are experimentally investigated using the transient liquid ...

2021

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

Peter Ott, Alexandros Terzis

The present study describes an experimental investigation into narrow impingement cooling channels with divergent geometries. The following analysis aims to clarify the influence that this particular form factor exerts on the heat transfer distribution, as ...

2015

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

Peter Ott, Alexandros Terzis

In modern turbine airfoils, narrow impingement cooling channels can be formed in a double-wall configuration. In these wall-integrated cooling cavities, the generated crossflow is one of the most important design factors, and hence, the number of impingeme ...

2015

Experimental Investigation of Combined/Simultaneous Gust and Oscillating Turbine Row Unsteady Aerodynamics in Transonic Flow

Peter Ott, Fabrice Rottmeier, Arrigo Beretta

2007

Experimental Investigations of Turbine Blade Showerhead Cooling

Peter Ott, Guillaume Wagner, Gregory Vogel

2006

Influence of Modeshape Mistuning on the Forced Response of a Turbine Cascade

Peter Ott, Arrigo Beretta, Gerhard Kahl

2006

Peter Ott

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Experimental and numerical investigation of narrow impingement cooling channels

Swirl Jet and Crossflow Interaction at Low Velocity Ratios and Incompressible Flows

Effects of a surface dielectric barrier discharge on transonic flows around an airfoil

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

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

Effects of high-speed airflows on a surface dielectric barrier discharge

Heat Transfer Enhancement in a Double Sequential Impingement Channel

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

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

Heat Transfer Experiments on an Heavily Film Cooled Nozzle Guide Vane

Effect of transonic airflows on a dielectric barrier discharge

Combined/Simultaneous Gust and Oscillating Turbine Row Unsteady Aerodynamics in Subsonic Flow

Experimental investigations on showerhead cooling on a blunt body

Method for Analysis of Showerhead Film Cooling Experiments on Highly Curved Surfaces

Influence of Mainstream Incidence Angle on Leading Edge Film Cooling Measured by the Transient Liquid Crystal Technique

Celebration of Professor Bernhard Weigand on his 60th birthday

A comparative study on showerhead cooling performance

Experimental Investigation of Combined/Simultaneous Gust and Oscillating Turbine Row Unsteady Aerodynamics in Transonic Flow

Experimental Investigations of Turbine Blade Showerhead Cooling

Influence of Modeshape Mistuning on the Forced Response of a Turbine Cascade