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Full-Text Articles in Mechanical Engineering
Free-Convection Heat Transfer From An Inclined Heated Flat Plate In Air, S. C. Yung, R. B. Oetting
Free-Convection Heat Transfer From An Inclined Heated Flat Plate In Air, S. C. Yung, R. B. Oetting
Mechanical and Aerospace Engineering Faculty Research & Creative Works
No abstract provided.
Film Boiling Heat Transfer From An Oscillating Sphere, L. G. Rhea, R. G. Nevins
Film Boiling Heat Transfer From An Oscillating Sphere, L. G. Rhea, R. G. Nevins
Mechanical and Aerospace Engineering Faculty Research & Creative Works
An experimental investigation has been undertaken to determine the effect of oscillation of the heat transfer surface on turbulent film boiling heat transfer. A transient technique was used to calculate the heat flux from copper spheres of 1 in., 3/4 in., and 1/2 in. dia. In all tests, saturated liquid nitrogen at atmospheric pressure was used as the boiling fluid. The data obtained were found to be in good agreement with published theory at zero frequency. The range of frequencies studied was from zero to approximately 12 cps at peak-to-peak amplitudes of 2 in. and 1 in., i.e., at amplitude-to-diameter …
Mutually Dependent Heat And Mass Transfer In Laminar Duct Flow, E. M. Sparrow, T. S. Chen
Mutually Dependent Heat And Mass Transfer In Laminar Duct Flow, E. M. Sparrow, T. S. Chen
Mechanical and Aerospace Engineering Faculty Research & Creative Works
An analysis is performed of the strongly coupled heat and mass transfer processes which result from sublimation of mass from the walls of a duct into a flowing gas, the latent heat being provided solely by convective transfer from the gas. The flow is assumed to be laminar and hydrodynamically developed. Results are given for the stream ward variations of the bulk and wall temperatures and mass fractions, of the heat and mass transfer rates, and of the local heat transfer coefficient. Representative temperature and mass fraction profiles are also presented. Entrance lengths characterizing the near approach to fully developed …
Methods For Evaluating The Performance Of Small Acoustic Filters, William S. Gatley, Raymond Cohen
Methods For Evaluating The Performance Of Small Acoustic Filters, William S. Gatley, Raymond Cohen
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Experimental methods are needed for determining the characteristics of small acoustic filters used in systems with pulsating gas flows. These characteristics could then be used to predict the performance of proposed filter designs in a particular system, according to plane wave acoustic theory. Dependence on trial-and-error experimentation in solving noise control problems would thus be minimized. A literature survey revealed only a few earlier attempts to evaluate the acoustic performance of small filters and filter elements. Three methods for determining reflection and transmission factors are described, evaluated, and compared. A method employing a standing wave tube of unique design is …
Structure Of Shock Waves With Nonequilibrium Radiation And Ionization, Harlan F. Nelson, R. Goulard
Structure Of Shock Waves With Nonequilibrium Radiation And Ionization, Harlan F. Nelson, R. Goulard
Mechanical and Aerospace Engineering Faculty Research & Creative Works
The investigations of this study are concerned with: (1) the physical processes that occur in the precursor and in the nonequilibrium region behind a strong shock wave during its approach to equilibrium in an argon like gas; (2) the influence of different atom-atom collisional rates in the relaxation region on the precursor; and (3) the cause of precursor ionization, which in this study has been assumed to be the photoionization of both the ground and excited states. The argon like gas is regarded as a combination of two gases: one consisting of electrons and the other of atoms and ions. …