Research Papers

Web-Based, Interactive Laboratory Experiment in Turbomachine Aerodynamics

[+] Author and Article Information
Nalin Navarathna, Vitalij Fedulov, Andrew Martin, Torsten Fransson

 Royal Institute of Technology (KTH), Brinellvägen 68, Stockholm 10044, Sweden

The pressure loss coefficient ξ=1η, where the efficiency of flow through a stator of turbine, η, is the ratio between actual kinetic energy and ideal kinetic energy(5).

J. Turbomach 132(1), 011015 (Sep 18, 2009) (7 pages) doi:10.1115/1.3106030 History: Received November 14, 2008; Revised December 20, 2008; Published September 18, 2009

Remote laboratory exercises are gaining popularity due to advances in communication technologies along with the need to provide realistic yet flexible educational tools for tomorrow’s engineers. Laboratory exercises in turbomachinery aerodynamics generally involve substantial equipment in both size and power, so the development of remotely controlled facilities has perhaps not occurred as quickly as in other fields. This paper presents an overview of a new interactive laboratory exercise involving aerodynamics in a linear cascade of stator blades. The laboratory facility consists of a high-speed fan that delivers a maximum of 2.5 kg/s of air to the cascade. Traversing pneumatic probes are used to determine pressure profiles at upstream and downstream locations, and loss coefficients are later computed. Newly added equipment includes cameras, stepper motors, and a data acquisition and control system for remote operation. This paper presents the laboratory facility in more detail and includes discussions related to user interface issues, the development of a virtual laboratory exercise as a complement to experiments, and comparative evaluation of virtual, remote, and local laboratory exercises.

Copyright © 2010 by American Society of Mechanical Engineers
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Figure 1

Existing linear cascade laboratory facility

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Figure 2

Schematic of remotely control online laboratory exercise

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Figure 3

Remote laboratory user interface

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Figure 4

Live video image of the side camera

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Figure 5

Live video image of the top camera

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Figure 6

Login page to the remote laboratory

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Figure 7

Laboratory reservation page at remote laboratory

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Figure 8

Virtual laboratory user interface



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