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High-resolution liquid-crystal heat-transfer measurements on the end wall of a turbine passage with variations in reynolds number
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hippensteele, Steven A. Russell, Louis M. |
| Copyright Year | 1988 |
| Description | Local heat-transfer coefficients were experimentally mapped on the end-wall surface of a three-times turbine vane passage in a static, single-row cascade operated with room-temperature inlet air over a range of Reynolds numbers. The test surface was a composite of commercially available materials: a Mylar sheet with a layer of cholesteric liquid crystals, which change color with temperature, and a heater made of a polyester sheet coated with vapor-deposited gold, which produces uniform heat flux. After the initial selection and calibration of the composite sheet, accurate, quantitative, and continuous heat-transfer coefficients were mapped over the end-wall surface. The local heat-transfer coefficients (expressed as nondimensional Stanton number) are presented for inlet Reynolds numbers (based on vane axial chord) from 0.83 x 10(5) to 3.97 x 10(5). |
| File Size | 5551413 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890009293 |
| Archival Resource Key | ark:/13960/t9w13zn2w |
| Language | English |
| Publisher Date | 1988-01-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Temperature Measurement Temperature Distribution Stanton Number Calibrating Reynolds Number Gas Turbine Engines Heat Transfer Coefficients Liquid Crystals Heat Transfer Channels Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
