CHARACTERISTICS OF FLUID FLOW THROUGH ORIFICES IN ROTATING DISKS.
Abstract
Rotating orifices were investigated recently as a means of cooling the window of a reentry vehicle. Besides intercepting thermal radiation, the rotating disk containing the orifices was believed to have reduced the flow of hot gases through the orifices. The study demonstrated with both air and water and with various disks that the flow rate can be reduced by increasing the orifice tangential speed. The results are presented graphically with the discharge coefficient C shown as a function of a non-dimensional velocity parameter S. At zero rotation (S = O) the discharge coefficient with air has values of 0.60 to 0.65, whereas at higher S values the discharge coefficient decreases to a range of 0.08 to 0.18. In the water tests values of S of 8.8 to 9.3 were obtained with corresponding values of C ranging between 0.04 and 0.18. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1966
- Accession Number
- AD0632386
Entities
People
- James William Wold
Organizations
- Air Force Institute of Technology