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Wednesday, August 5, 2020 | History

2 edition of Predictions and experimental investigations on the performance of wells air turbine. found in the catalog.

Predictions and experimental investigations on the performance of wells air turbine.

Chor Par Tan

Predictions and experimental investigations on the performance of wells air turbine.

by Chor Par Tan

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  • 38 Currently reading

Published .
Written in English


Edition Notes

Thesis (Ph. D.)--The Queen"s University of Belfast, 1983.

The Physical Object
Pagination1 v
ID Numbers
Open LibraryOL21036799M

only few analyze its performance under an unsteady and bi-directional air flow, as determined by the presence of the OWC system. In this work, experimental and numerical performance of a high-solidity Wells turbine with NACA profiles under the bi-directional flow generated by a hydraulic piston is compared.   Experimental Investigation in a Wells Turbine Under Bi-Directional Flow,” On the Performance of Air-Lift Pumps: From Analytical Models to Large Eddy Simulation Unsteady Flow Physics and Performance Prediction of a /2 Stage Unshrouded High Work Turbine Using the Lattice Boltzmann Approach. GT

A monoplane Wells turbine was tested during the experiments conducted at sea on a small scale model of a REWEC (Resonant Wave Energy Converter) breakwater. Tests aimed at analyzing the behaviour of the turbine subjected to randomly varying oscillati ng air flow, variable according to the intensity and s pectral characteristics of the sea. International Journal of Turbomachinery, Propulsion and Power (ISSN X) is an international peer-reviewed open access journal on turbomachinery, propulsion and power. It is the journal of the EUROTURBO European turbomachinery society and is published online quarterly by MDPI.. Open Access —free for readers, with article processing charges (APC) .

An Experimental Investigation on the Performance and the Wake Characteristics of a Wind Turbine Subjected to Surge Motion Morteza Khosravi1, Partha Sarkar 2 and Hui Hu3() Iowa State University, Ames, Iowa, , USA. There are many advantages of floating wind turbines in deep waters, however.   This paper presents an experimental and numerical investigation of the aero-thermal performance of an uncooled winglet tip, under transonic conditions. Spatially-resolved heat transfer data, including winglet tip surface and near tip side walls, are obtained using the transient infrared thermography technique within the Oxford High Speed Linear.


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Predictions and experimental investigations on the performance of wells air turbine by Chor Par Tan Download PDF EPUB FB2

Predictions and experimental investigations on the performance of Wells air turbine Author: Tan, C. ISNI: Awarding Body: Queen's University Current Institution: Queen's University Belfast Date of Award: Availability of Full Text.

A theoretical investigation is presented concerning the aerodynamic performance of the Wells turbine, a self-rectifying, axial-flow turbine suitable for energy extraction from a reciprocating air. Topics: 01A - Aerodynamics, 21E - Jet turbine engines, gas turbine engines, 14B - Laboratories, test facilities, test equipment, Predictions and experimental investigations on the performance of Wells air turbine [ Turbine aerodynamic study]Author: C.P Tan.

A comparison of predicted and measured performance of the bi-directional Islay Wells air turbine is presented. Reasonable agreement was evident for pressure, converted power and efficiency, at lower by:   Experimental investigations were performed for two Wells turbine solidities, σ= and σ=, operating under sinusoidal and irregular, unsteady real sea conditions (Site2).

As a result, it has been concluded that for Wells turbine operating under bi-directional unsteady flow, the rotor geometry preferred is the CA9 blade profile with rotor Cited by:   Zahari Taha et al.

studied the effect of uniform tip clearance on the performance of a Wells turbine with NACA blade profile, and compared the computational results with the experimental ones of Takao et al. This paper describes the use of CFD to investigate the performance of a Wells turbine with various non-uniform tip clearances.

Sea wave energy is one of the high potential renewable energy sources. The Wells turbine as the main part of Oscillating Water Column energy plant is analyzed in this paper. The Wells turbine uses air flow produced by the pressure change inside the.

experimental data. 2 The Wells turbine description The principle of the Oscillating Water Column (OWC) plant is shown in the Fig. The main elements of the plant are the air chamber and the Wells turbine with the electric generator.

The Wells turbine consists of the rotor blades with symmetrical airfoil cross section set radially around. As air passes through a gas turbine engine, aerodynamic and energy requirements demand changes in the air’s velocity and pressure.

During compression, a rise in the air pressure is required, but not an increase in its velocity. After compression and combustion have heated the air, an increase in the velocity of gases is necessary in.

44 Wells turbine [], see figure 1(a, b) due to its simple and efficient operation. The Wells turbine has already been applied in practice to gain energy from marine waves In 46 the past two decades, experimental research of Wells turbine has mainly focused on 47 improving the turbine performance with emphasis on the overall operational.

investigations regarding the design and the aerodynamic performance prediction of a Wells turbine have been car- ried out in the last three decades []. Analytical and experimental studies of the effect of geometric and aerodynamic variables on the performance of the Wells self-rectifying air turbine are presented in this paper.

Two approaches to the prediction of the Wells turbine performance are described, both of which are based on the two dimensional cascade theory and isolated aerofoil data.

Wells turbine for wave energy conversion: a review 11 July | International Journal of Energy Research, Vol. 41, No. 1 Study of the turbine power output of an oscillating water column device by using a hydrodynamic – Aerodynamic coupled model.

On the Aerodynamic Design of a Wells-Turbine Blade. @article{osti_, title = {The Wells turbine in an oscillating air flow}, author = {Raghunathan, S and Ombaka,}, abstractNote = {An experimental study of the performance of a m diameter Wells self rectifying air turbine with NACA blades is presented.

Experiments were conducted in an oscillating flowrig. The effects of Reynolds number and Strouhal number on the performance. Predictions and experimental investigations on the peformance of Wells air turbine. PhD Thesis, The Queen's University of Belfast, Belfast, UK, Google Scholar.

Raghunathan, S, Tan, CP. Aerodynamic performance of a Wells air turbine. J Energy ; 7(3). Wells turbine is one of the most efficient oscillating water column technologies. This article provides an updated and a comprehensive account of the state‐of‐the‐art research on Wells turbine.

Hence, it draws a roadmap for the contemporary challenges, which may hinder future reliance on such systems in the renewable energy sector. Experimental Investigation of Turbine Stator Well Rim Seal, Re-Ingestion and Interstage Seal Flows Using Gas Concentration Techniques and Displacement Measurements Gas turbine engine performance requires effective and reliable internal cooling over the duty cycle of the engine.

Life predictions for rotating components subject to the main gas. the performance of single stage gas turbine which is able to operate with hot air as a working fluid at specific boundary conditions.

These boundary conditions were chosen to be compatible with a Brayton cycle. The evaluation is dependent on the turbine efficiency and output power. Firstly, preliminary design work was. In this paper, a comparison of total entropy generation between a suggested design and a constant chord Wells turbine is presented.

A variable chord rotor Wells turbine design is suggested in order to have a more uniform axial velocity distribution at blades leading edge in comparing conventional design to improve turbine efficiency.

Each model is analysed. Wells turbine Entropy generation NACA airfoils Sinusoidal wave CFD abstract Wells turbine concept depends on utilizing the oscillating air column generated over marine waves to drive a turbine.

As a matter of fact, previous researches on the performance analysis of such turbine were based on the first law of thermodynamics only. Computational analysis of performance and flow investigation on wells turbine for wave energy conversion Renewable Energy, Vol.

30, No. 14 Effect of guide vanes on the performance of a self-rectifying air turbine with constant and variable chord rotors.The Wells turbine Self-rectifying turbines are among the proposed solutions for an e cient and economical technique of converting the oscillating ow into an unidirectional rotary motion to drive the electric generator [16, Ch.

]. The Wells turbine is the rst concept of self-rectifying air turbine that have been designed [6].