Experimental Study of Impinging Jets Flow-Fields
Abstract
This project focused on experiments to improve the understanding and aid in the analysis of Short Take-Off and Vertical Landing (STOVL) vehicle aerodynamics during sea-based operations. The goal of the research was to conduct experiments to define the major features of complex dual impinging jet flow-fields and to guide numerical simulation developments and evaluate the accuracy of the predictions. The laboratory model consists of dual jets impinging on a large flat plane to simulate the jets that provide powered lift for STOVL aircraft. The nozzles are mounted in a simplified aircraft underside, or lift plate. A pitot pressure rake and a Laser Doppler Velocimeter (LDV) were used for mean and turbulence velocity surveys of the jet plumes and out-wash flow. The laboratory model included the addition of a jet heating together with a large number of thermocouples positioned at strategic positions throughout the apparatus. Measured temperature distributions were compared with those predicted by the coupled CFD- conjugate heat transfer calculations, in which the CFD computations were provided by the AIR 4.3.2.1 Branch at NAWC. Preliminary data comparisons indicate that the computational models have good accuracy with considerable opportunity for further development.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 27, 2016
- Accession Number
- AD1015525
Entities
People
- Dennis K. Mclaughlin
- Philip J. Morris
Organizations
- Pennsylvania State University