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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Forghan, Fariborz Askari, Omid Narusawa, Uichiro Metghalchi, Hameed |
| Copyright Year | 2014 |
| Abstract | The main goal of gas turbine design is the effective use of energy. Usually, the efficient high temperature first and second stage turbine blade surface is cooled by jet of coolant flow from extended exit holes (EEH). Against the prevailing hot gas flow, the flow through EEH must be designed to form a film of cool air over the blade. Computational analyses are performed to examine the cooling effectiveness of flow from EEH over the suction side of a blade by solving conservation equations (mass, momentum and energy) and the ideal gas equation of state for the three-dimensional, turbulent, compressible flow. A diverging flow through EEH is typically choked at its throat, resulting in a supersonic flow, a shock and then a subsonic flow downstream. The location of the shock relative to the high-temperature gas flow over the blade determines the temperature distribution along the blade surface; which is analyzed in detail when the coolant flow rate is varied. |
| Sponsorship | Advanced Energy Systems Division |
| File Format | |
| ISBN | 9780791845868 |
| DOI | 10.1115/ES2014-6527 |
| Volume Number | Volume 1: Combined Energy Cycles, CHP, CCHP, and Smart Grids; Concentrating Solar Power, Solar Thermochemistry and Thermal Energy Storage; Geothermal, Ocean, and Emerging Energy Technologies; Hydrogen Energy Technologies; Low/Zero Emission Power Plants and Carbon Sequestration; Photovoltaics; Wind Energy Systems and Technologies |
| Conference Proceedings | ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology |
| Language | English |
| Publisher Date | 2014-06-30 |
| Publisher Place | Boston, Massachusetts, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Suction Supersonic flow Energy consumption Temperature distribution Turbulence Turbine blades Cooling Blades Momentum High temperature Flow (dynamics) Design Equations of state Gas turbines Gas flow Subsonic flow Coolants Film cooling Shock (mechanics) Compressible flow |
| Content Type | Text |
| Resource Type | Article |
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