Publications related to Centrifugal compressor

Interaction Between Nanosecond Pulse DBD Actuators and Transonic Flow

Christoph Hollenstein, Peter Ott, Pénélope Leyland, Philip Peschke, Sami Goekce

The application of nanosecond pulse-driven surface dielectric barrier discharge (DBD) actuators as control devices on airfoils and turbomachinery blades in transonic flow is investigated experimentally. Images acquired with a short-exposure ICCD camera doc ...

2011

Prototype of a thermally driven heat pump based on integrated organic Rankine cycles (ORC)

Daniel Favrat, Samuel Henchoz, Jonathan Demierre

The concept studied in this work is a low power ORC-ORC system (about 20 kW heat at the condenser) which is composed of an ORC engine cycle driving a reversed ORC heat pump cycle, both using the same fluid. The radial compressor and turbine are directly co ...

2010

Investigations on Axial Compressor Cascades with Aspiration on Blades and Hub

Peter Ott, Elia Colombo, Cécile Deslot

This document presents an overview of the investigations performed within the project NEWAC on the application of active flow control by aspiration to axial compressors. It is based on the measurements performed on different annular cascades, tested in the ...

2010

Design, experimental investigation and multi-objective optimization of a small-scale radial compressor for heat pump applications

Daniel Favrat, Jürg Alexander Schiffmann

The main driver for small scale turbomachinery in domestic heat pumps is the potential for reaching higher efﬁciencies than volumetric compressors currently used and the potential for making the compressor oil-free, bearing a considerable advantage in the ...

2010

Analysis and Prevention of Vortex Breakdown in the Simplified Discharge Cone of a Francis Turbine

François Avellan, Vlad Hasmatuchi

We perform a numerical analysis of the decelerated swirling flow into the discharge cone of a model Francis turbine operated at variable discharge and constant head, using an axisymmetric turbulent swirling flow model and a corresponding simplified computa ...

American Society of Mechanical Engineers2010

Modal behavior of a reduced scale pump turbine impeller. Part II: Numerical simulation

François Avellan, Mohamed Farhat, Xiaopeng Huang, Eduard Egusquiza

A numerical simulation has been carried out to analyze the modal behavior of a reduced scale pump-turbine impeller. The simulation has been done using FEM method, in air and in water. The same boundary conditions than in the experiment were considered: fre ...

International Association For Hydraulic Research2010

Design of antenna based microwave sensors for blade tip clearance measurement in gas turbine

Anja Skrivervik, Jean-François Zürcher, Maddalena Violetti

Real time tip clearance measurement in gas turbines and other rotating machinery is an interesting way to provide enhanced reliability, cost effective maintenance and more overall safety. This paper presents a novel microwave sensor for blade tip clearance ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Integrated Design and Optimization of Gas Bearing Supported Rotors

Daniel Favrat, Jürg Alexander Schiffmann

The design of direct driven turbomachinery is an interdisciplinary task. Standard design procedures propose to split such systems into subcomponents and to design each one individually. This common procedure, however, tends to neglect the interactions betw ...

2010

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Centrifugal compressor

Interaction Between Nanosecond Pulse DBD Actuators and Transonic Flow

Prototype of a thermally driven heat pump based on integrated organic Rankine cycles (ORC)

Investigations on Axial Compressor Cascades with Aspiration on Blades and Hub

Hydrodynamics of High Specific Power Pumps for Off-Design Operating Conditions

Design, experimental investigation and multi-objective optimization of a small-scale radial compressor for heat pump applications

Analysis and Prevention of Vortex Breakdown in the Simplified Discharge Cone of a Francis Turbine

Feasibility analysis of a micro gas turbine for hybrid cycle

Modal behavior of a reduced scale pump turbine impeller. Part II: Numerical simulation

Design of antenna based microwave sensors for blade tip clearance measurement in gas turbine

Integrated Design and Optimization of Gas Bearing Supported Rotors

Graph Chatbot

Chat with Graph Search

Interaction Between Nanosecond Pulse DBD Actuators and Transonic Flow

Investigations on Axial Compressor Cascades with Aspiration on Blades and Hub

Prototype of a thermally driven heat pump based on integrated organic Rankine cycles (ORC)

Hydrodynamics of High Specific Power Pumps for Off-Design Operating Conditions

Design, experimental investigation and multi-objective optimization of a small-scale radial compressor for heat pump applications

Analysis and Prevention of Vortex Breakdown in the Simplified Discharge Cone of a Francis Turbine

Modal behavior of a reduced scale pump turbine impeller. Part II: Numerical simulation

Feasibility analysis of a micro gas turbine for hybrid cycle

Design of antenna based microwave sensors for blade tip clearance measurement in gas turbine

Integrated Design and Optimization of Gas Bearing Supported Rotors