1996 Coolant Flow Management Workshop
Title | 1996 Coolant Flow Management Workshop PDF eBook |
Author | |
Publisher | |
Pages | 356 |
Release | 1997 |
Genre | |
ISBN |
Flow in Serpentine Coolant Passages with Trip Strips
Title | Flow in Serpentine Coolant Passages with Trip Strips PDF eBook |
Author | National Aeronautics and Space Adm Nasa |
Publisher | Independently Published |
Pages | 38 |
Release | 2019 |
Genre | |
ISBN | 9781792727153 |
Under the subject contract, an effort is being conducted at Scientific Research Associates, Inc. (SRA) to obtain flow field measurements in the coolant passage of a rotating turbine blade with ribbed walls, both in the stationary and rotating frames. The data obtained will be used for validation of computational tools and assessment of turbine blade cooling strategies. The configuration of the turbine blade passage model is given, and the measuring plane locations are given. The model has a four-pass passage with three 180 turns. This geometry was chosen to allow analyses of the velocity measurements corresponding to the heat transfer results obtained by Wagner. Two passes of the passage have a rectangular cross-section of 1.0 in x 0.5 in. Another two passes have a square cross-section of 0.5 in x 0.5 in. Trips with a streamwise pitch to trip height (P/e) = 5 and trip height to coolant passage width (e/Z) = 0.1, were machined along the leading and trailing walls. These dimensions are typical of those used in turbine blade coolant passages. The trips on these walls are staggered by the half-pitch. The trips are skewed at +/- 45 deg, and this allows the effect of trip orientation to be examined. Experiments will be conducted with flow entering the model through the 1.0 in x 0.5 in rectangular passage (Configuration C) and the 0.5 in x 0. 5 in square passage (Configuration D) to examine the effect of passage aspect ratio. Velocity measurements were obtained with a Reynolds number (Re) of 25,000, based on the hydraulic diameter of and bulk mean velocity in the half inch square passage. The coordinate system used in presenting the results for configurations C and D, respectively, is shown. The first, second and third passes of the passage will be referred to as the first, second and third passages, respectively, in later discussion. Streamwise distance (x) from the entrance is normalized by the hydraulic diameter (D). Vertical (y) and tangential (z) distances are normali...
Scientific and Technical Aerospace Reports
Title | Scientific and Technical Aerospace Reports PDF eBook |
Author | |
Publisher | |
Pages | 594 |
Release | 1992 |
Genre | Aeronautics |
ISBN |
Effects of Rotation on Coolant Passage Heat Transfer. Volume 2: Coolant Passages with Trips Normal and Skewed to the Flow
Title | Effects of Rotation on Coolant Passage Heat Transfer. Volume 2: Coolant Passages with Trips Normal and Skewed to the Flow PDF eBook |
Author | |
Publisher | |
Pages | 132 |
Release | 1993 |
Genre | |
ISBN |
ASME Technical Papers
Title | ASME Technical Papers PDF eBook |
Author | |
Publisher | |
Pages | 574 |
Release | 2000 |
Genre | Mechanical engineering |
ISBN |
Heat Transfer in Gas Turbines
Title | Heat Transfer in Gas Turbines PDF eBook |
Author | Bengt Sundén |
Publisher | Witpress |
Pages | 544 |
Release | 2001 |
Genre | Medical |
ISBN |
This title presents and reflects current active research on various heat transfer topics and related phenomena in gas turbine systems. It begins with a general introduction to gas turbine heat transfer, before moving on to specific areas.
Heat Transfer in Rotating Serpentine Passages with Selected Model Orientation for Smooth Or Skewed Trip Walls
Title | Heat Transfer in Rotating Serpentine Passages with Selected Model Orientation for Smooth Or Skewed Trip Walls PDF eBook |
Author | |
Publisher | |
Pages | 14 |
Release | 1993 |
Genre | Heat |
ISBN |