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Heat Transfer, Flow Instability, and Critical Heat Flux For Water in a Small Tube At 200 psia

Description: From Abstract: Report discussing "the effects of developing two-phase flow regimes in a constant-pressure drop system are shown in recorded traces from a fast-response flow transducer: the mass velocity decreases and transfer-surface superheat increases with increasing steam quality."
Date: June 1963
Creator: Weatherhead, R. J.
Partner: UNT Libraries Government Documents Department

Temperature Distribution in the Crystallization of Undercooled Liquids in Cylindrical Tubes

Description: From Introduction: "The major difficulty in interpreting the results obtained by this simple experimental technique is the specification of the temperature at the crystal-liquid interface. Since, the liquid-to-solid transformation is exothermic the temperature in the vicinity of the interface will exceed the temperature in the vicinity of the interface will exceed the temperature of the bulk of the cooling bath, which is the quantity most conveniently measured and most frequently reported."
Date: May 1964
Creator: Brian, P. L. T. & Sperry, P. R.
Partner: UNT Libraries Government Documents Department

Study of Two-Phase Metastable Flow

Description: From Abstract: "An experimental study was made to determine the flow rate of saturated water through short tubes of various lengths and diameters. Tubes of both rounded and sharp edge entrances were tested in the horizontal and vertical positions. Test results were analyzed and correlated."
Date: November 1966
Creator: Bryers, Richard W. & Hsieh, William S.
Partner: UNT Libraries Government Documents Department

Investigation of Pitot tubes

Description: Report describes the principles of operation and characteristics of some of the instruments which have been devised or used to measure both low and high speeds of aeroplanes. Since the pitot tube is the instrument which has been most commonly used in the United States and Great Britain as a speedometer for aeroplanes, it is treated first and somewhat more fully than the others.
Date: 1917
Creator: Herschel, W. H. & Buckingham, E.
Partner: UNT Libraries Government Documents Department

Wind-tunnel investigation of a shielded total-pressure tube at transonic speeds

Description: Report presenting testing of a shielded total-pressure tube with a curved venturi entry in order to obtain the variation of total-pressure error with angle of attack from a range of 0 to 60 degrees and for a range of Mach numbers. The critical angle was found to vary from about 57 degrees at Mach number 0.90 to 56 degrees at Mach number 1.10.
Date: January 22, 1952
Creator: Gracey, William; Pearson, Albin O. & Russell, Walter R.
Partner: UNT Libraries Government Documents Department

The effect of compressibility on the pressure reading of a Prandtl pitot tube at subsonic flow velocity

Description: Errors arising from yawed flow were also determined up to 20 degrees angle of attack. In axial flow, the Prandtl pitot tube begins at w/a approx. = 0.8 to give an incorrect static pressure reading, while it records the tank pressure correctly, as anticipated, up to sonic velocity. Owing to the compressibility of the air, the Prandtl pitot tube manifests compression shocks when the air speed approaches velocity of sound. This affects the pressure reading of the instrument. Because of the increasing importance of high speed in aviation, this compressibility effect is investigated in detail.
Date: November 1939
Creator: Walchner, O.
Partner: UNT Libraries Government Documents Department

Performance Characteristics of Advanced Evaporator Tubes for Long-Tube Vertical Evaporators

Description: From Introduction: "The investigation detailed in this report were undertaken to compare effectiveness of tubes enhanced in various ways and, then, to provide performance data on selected tubes of most promising type."
Date: January 1971
Creator: Hammond, R. P.; Alexander, L. G.; Hoffman, H. W. & Hoffman, H. W.
Partner: UNT Libraries Government Documents Department

Third Report on Horizontal-Tube Multiple-Effect Process Pilot Plant Tests

Description: From Summary: "This report describes the continuing work on HTME distillation plants, the first portions of which were reported in References 1 and 2. A major purpose in the testing of the three-effect pilot plant was to demonstrate mutiple-effect operability of the the horizontal tube method, when utilizing basically the same construction methods and materials as those proposed for commercial HTME plants."
Date: October 1971
Creator: Matta, G. A.; Karpf, J. Z.; Pascale, A. S. & Cardello, J. A.
Partner: UNT Libraries Government Documents Department

Oak Ridge National Laboratory Vertical Tube Evaporator Pilot Plant Annual Report for Fiscal Year 1970

Description: From Introduction: "This report covers the work done in fiscal 1970 and the small amount of work done in the early part of fiscal 1971; the inclusive dates covered are July 1, 1969 through July 10, 1970. A four effect VTE train operating in the downflow mode. A single effect VTE unit operating in the downflow mode. A mixed phase high pressure water and steam jet compression unit complete with a boiler to supply high pressure motive steam."
Date: October 1970
Creator: Stearns-Roger Corporation
Partner: UNT Libraries Government Documents Department

Shock-Tube Experiments at University of Oklahoma and Cornell University

Description: Abstract: "The shock-tube experiments of Professor R. G. Fowler and his co-workers at the University of Oklahoma, and of Professor Arthur Kantrowits and his group at Cornell University, are reported by the author, who visited the laboratories of the two groups. Fowler's group has studied expanding low-pressure sparks; Kantrowits and his group have studied shocks produced by the adiabatic expansion of a compressed gas."
Date: May 20, 1955
Creator: Huber, Elsa L.
Partner: UNT Libraries Government Documents Department

Plastic Flow During Extrusion of Tubing

Description: Abstract: "A study of plastic flow during the extrusion of tubing was made by extruding colored Plasticine billets in a small-scale extrusion press. Decreasing the included angle of the conical die and tapering the ram end of the billet decreased the amount of coextrusion of the backer block into the tubing, lubricating the billet also decreased coextrusion."
Date: July 26, 1955
Creator: Saller, Henry A.; Keeler, John R. & Cuddy, Lee J.
Partner: UNT Libraries Government Documents Department

A theory for predicting the flow of real gases in shock tubes with experimental verification

Description: Report presenting the nonlinear characteristic differential equations applicable to a quasi-one-dimensional unsteady channel flow with friction and heat transfer, which are linearized and integrated in functional form for the particular study of small perturbations from ideal shock-tube flows.
Date: March 1955
Creator: Trimpi, Robert L. & Cohen, Nathaniel B.
Partner: UNT Libraries Government Documents Department

Experimental data concerning the effect of high heat-input rates on the pressure drop through radiator tubes

Description: From Summary: "The pressure drops through electrically heated Inconel tubes with length-diameter ratios of 29.25, 58.50, 87.75, and 117.00 have been measured at entrance Mach numbers from approximately 0.12 to the value at which choking occurred. The heat-input rate was varied from zero to the highest values allowable without damaging the tubes. Experimental data and a number of computed variables are presented in tabular form."
Date: September 22, 1948
Creator: Habel, Louis W. & Gallagher, James J.
Partner: UNT Libraries Government Documents Department

Tests to determine the effect of heat on the pressure drop through radiator tubes

Description: Report presenting tests to determine the effect of heat on the pressure drop through radiator tubes made to establish the adequacy of previously developed theory. Results regarding the evaluation of incompressible pressure drop, tubes with smooth entrances, and tubes with transition fixed are provided.
Date: July 1947
Creator: Habel, Louis W. & Gallagher, James J.
Partner: UNT Libraries Government Documents Department

Coking of JP-4 fuels in electrically heated metal tubes

Description: A limited exploratory investigation of the rate of coking of four JP-4 fuels in electrically heated metal tubes was conducted in order to provide design information for fuel prevaporizers for turbojet-engine combustors. The fuels tested included two production and two minimum-quality JP-4 type fuels. The heating tube was operated at fuel pressures of approximately 500, 400, and 50 pounds per square inch. The operating fuel temperature was varied between approximately 600 degrees and 1200 degrees F.
Date: November 20, 1956
Creator: Smith, Arthur L.; Cook, William P. & Hlavin, Vincent F.
Partner: UNT Libraries Government Documents Department

Pressure drop in tank and float vent tubes on diving airplanes

Description: Report presenting an experiment regarding tank and float venting conditions that exist on diving airplanes undergoing rapid changes in altitude. The results indicated that large pressure differences build up between the outside and inside of tanks and floats on diving airplanes unless the correct size of venting tube is used.
Date: January 1939
Creator: Waldron, C. D.
Partner: UNT Libraries Government Documents Department

Wind-tunnel investigation of a number of total-pressure tubes at high angles of attack: Subsonic speeds

Description: Report presenting an investigation of the possibility of designing a fixed total-pressure tube which will remain insensitive to inclination of the air stream over a wide range of angle of attack through subsonic and supersonic speed ranges.
Date: April 1951
Creator: Gracey, William; Letko, William & Russell, Walter R.
Partner: UNT Libraries Government Documents Department

Effects of compressibility and large angles of yaw on pressure indicated by a total-pressure tube

Description: Report discusses the effects of compressibility and angle of yaw on the pressure measured by a round-nose and a flat-nose total-pressure tube. The error incurred in the pressure measurements and factors affecting the total-pressure area are described.
Date: April 1945
Creator: Humphreys, Milton D.
Partner: UNT Libraries Government Documents Department