Numerical and Experimental Methods for the Prediction of Field Point Velocities Around Propeller Blades.
Abstract
Flow characteristics of a series of NSRDC research propellers (propellers 4381, 4382, 4383, 4498) are experimentally investigated applying Laser-Doppler Anemometer technique. This experimental method is significantly different from conventional ones in providing precise quantitative flow information which would be extremely difficult or impossible to obtain with mechanical measuring probes. The flow characteristics are directly obtained or derived from the measurement of field point velocities. Also, theoretical study has been made for the prediction of field point velocities utilizing numerical lifting-surface theory and the results are compared to those measured. It has been found that the agreement is good or at least theory nicely follows the experimental pattern, which indicates the possibility of a simple correlation between measurement and the present theory. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1978
- Accession Number
- ADA060722
Entities
People
- Keh-sik Min
Organizations
- Massachusetts Institute of Technology