Loading...
Please wait, while we are loading the content...
Similar Documents
Long hole film cooling dataset for cfd development - flow and film effectiveness
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Shyam, Vikram Ameri, Ali Poinsatte, Phillip Thurman Sr., Douglas |
| Copyright Year | 2014 |
| Description | An experiment investigating flow and heat transfer of long (length to diameter ratio of 18) cylindrical film cooling holes has been completed. In this paper, the thermal field in the flow and on the surface of the film cooled flat plate is presented for nominal freestream turbulence intensities of 1.5 and 8 percent. The holes are inclined at 30 deg above the downstream direction, injecting chilled air of density ratio 1.0 onto the surface of a flat plate. The diameter of the hole is 0.75 in. (approx. 0.02 m) with center to center spacing (pitch) of 3 hole diameters. Coolant was injected into the mainstream flow at nominal blowing ratios of 0.5, 1.0, 1.5, and 2.0. The Reynolds number of the freestream was approximately 11,000 based on hole diameter. Thermocouple surveys were used to characterize the thermal field. Infrared thermography was used to determine the adiabatic film effectiveness on the plate. Hotwire anemometry was used to provide flowfield physics and turbulence measurements. The results are compared to existing data in the literature. The aim of this work is to produce a benchmark dataset for Computational Fluid Dynamics (CFD) development to eliminate the effects of hole length to diameter ratio and to improve resolution in the near-hole region. In this report, a Time Filtered Navier Stokes (TFNS), also known as Partially Resolved Navier Stokes (PRNS), method that was implemented in the Glenn-HT code is used to model coolant-mainstream interaction. This method is a high fidelity unsteady method that aims to represent large scale flow features and mixing more accurately. |
| File Size | 1092118 |
| Page Count | 33 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150006746 |
| Archival Resource Key | ark:/13960/t35190s83 |
| Language | English |
| Publisher Date | 2014-07-28 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Thermodynamics Hole Geometry Mechanics Flat Plates Computational Fluid Dynamics Thermocouples Blowing Low Speed Wind Tunnels Diameters Holes Mechanics Navier-stokes Equation Multiblock Grids Length Cylindrical Bodies Wind Tunnel Tests Coolants Film Cooling Velocity Measurement Heat Transfer Thermography Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
