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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Chen, Jian-Xin Gan, Xiaopeng Owen, J. Michael |
| Copyright Year | 1995 |
| Abstract | A superposed radial outflow of air is used to cool two discs that are rotating at equal and opposite speeds at rotational Reynolds numbers up to 1.2 × 106. One disc, which is heated up to 100°C, is instrumented with thermocouples and fluxmeters; the other disc, which is unheated, is made from transparent polycarbonate to allow the measurement of velocity using an LDA system. Measured Nusselt numbers and velocities are compared with computations made using an axisymmetric elliptic solver with a low-Reynolds-number k-ε turbulence model. Over the range of flow rates and rotational speeds tested, agreement between the computations and measurements is mainly good. As suggested by the Reynolds analogy, the Nusselt numbers for contra-rotating discs increase strongly with rotational speed and weakly with flow rate; they are lower than the values obtained under equivalent conditions in a rotor-stator system. |
| Sponsorship | International Gas Turbine Institute |
| File Format | |
| ISBN | 9780791878781 |
| DOI | 10.1115/95-GT-184 |
| Volume Number | Volume 1: Turbomachinery |
| Conference Proceedings | ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition |
| Language | English |
| Publisher Date | 1995-06-05 |
| Publisher Place | Houston, Texas, USA |
| Access Restriction | Open |
| Subject Keyword | Transparency Turbulence Computation Laser doppler anemometry Reynolds number Rotors Thermocouples Stators Disks Outflow Flow (dynamics) Heat transfer |
| Content Type | Text |
| Resource Type | Article |
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