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Application of ray acoustics to the propagation of sound in ducts containing sheared flows
(Virginia Polytechnic Institute and State University, 1972)
Ray acoustics has been applied to the propagation of sound waves in a homogeneous moving medium with sheared flow bounded by the hard walls of a duct. Differential equations describing the ray trajectories and spreading ...
An experimental analysis of heat transfer in coiled tubes
(Virginia Polytechnic Institute and State University, 1972)
The axial temperature distribution and average heat transfer coefficients were measured for a coiled tube heat exchanger. Water was heated inside the tube under turbulent flow conditions by low pressure steam condensing ...
An experimental investigation of the effects of inlet geometry on the performance of a bistable fluid amplifier
(Virginia Polytechnic Institute and State University, 1972)
The effects of varying inlet geometry on the performance of bistable fluid amplifiers were investigated experimentally on a large scale model flip-flop operated with air. Performance curves and power jet velocity profiles ...
Heat transfer measurements in film condensation of steam on small diameter horizontal tubes
(Virginia Polytechnic Institute and State University, 1972)
Heat transfer coefficients were measured during film condensation of steam on horizontal tubes of 0.122, 0.182, 0.250, 0.375 inches in diameter. Scale effects were eliminated by repeated cleaning of the tubes. Filmwise, ...
Effect of relative humidity on the fatigue characteristics of mild steel in reversed torsion
(Virginia Polytechnic Institute and State University, 1972)
Reversed torsion fatigue tests were conducted on both notched and unnotched specimens of SAE 1018 steel. The tests were made on a Sonntag Universal Fatigue Testing Machine at the rate of 1800 stress cycles per minute. The ...