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Experimental Surface Heat Flux Measurement In Hypervelocity Flows
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Book Synopsis Experimental Surface Heat Flux Measurement in Hypervelocity Flows by : William P. Flaherty
Download or read book Experimental Surface Heat Flux Measurement in Hypervelocity Flows written by William P. Flaherty and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Prediction of heat transfer is integral to development of hypersonic vehicles. Underprediction of heat transfer rates can result in catastrophic failures during flight testing. An example which illustrates the importance of heat transfer during hypersonic flight is the destruction of the space shuttle Columbia during the re-entry portion of STS-107. The shuttle experienced damage to its heat shielding, which in turn was not able to protect the craft from the extremely high levels of heat transfer experience during re-entry, resulting in the destruction of the craft. Due to both the high costs and dangers associated with flight testing, ground based experimental heat transfer data is essential the the design of safe and efficient hypersonic craft. Experimental data in facilities which have the ability to create mid to high enthalpy flowfields without large amounts of freestream dissociation is highly desirable in order to both validate CFD codes and to determine the effects of variations in geometry on heat transfer. The Hypervelocity Expansion Tube (HET) is one of a few facilities in the US that are able to create these flows, and thus it is an optimal test bed for these types of studies. Two gage types used in order to measure surface heat transfer, thermocouples and thin film gages. This thesis details the development and application of thermocouples and thin film surface heat transfer gages in the HET. These gages have been extensively used in other hypersonic facilities, but their application and comparison in intermediate enthalpy conditions (like those created in the HET) has not been well established in previous reports. This study sought to compare the performance of the gages and to apply them to canonical model geometries to investigate heat transfer in the HET.
Book Synopsis Interaction of Chemistry, Turbulence and Shock Waves in Hypervelocity Flow by : G. V. Candler
Download or read book Interaction of Chemistry, Turbulence and Shock Waves in Hypervelocity Flow written by G. V. Candler and published by . This book was released on 1994 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Review of High-speed, Convective, Heat-transfer Computation Methods by : Michael E. Tauber
Download or read book A Review of High-speed, Convective, Heat-transfer Computation Methods written by Michael E. Tauber and published by . This book was released on 1989 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Investigation of Heat-transfer Distributions in Deep Cavities in Hypersonic Separated Flow by : Allan R. Wieting
Download or read book Experimental Investigation of Heat-transfer Distributions in Deep Cavities in Hypersonic Separated Flow written by Allan R. Wieting and published by . This book was released on 1970 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypervelocity wind tunnel tests to determine local cold wall convective heating rates to small rectangular cavities,
Book Synopsis Experimental Heat Transfer, Fluid Mechanics and Thermodynamics 1993 by : M.D. Kelleher
Download or read book Experimental Heat Transfer, Fluid Mechanics and Thermodynamics 1993 written by M.D. Kelleher and published by Elsevier. This book was released on 2012-12-02 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers contained in this volume reflect the ingenuity and originality of experimental work in the areas of fluid mechanics, heat transfer and thermodynamics. The contributors are drawn from 27 countries which indicates how well the worldwide scientific community is networked. The papers cover a broad spectrum from the experimental investigation of complex fundamental physical phenomena to the study of practical devices and applications. A uniform outline and method of presentation has been used for each paper.
Book Synopsis Measurement of Local High-level, Transient Surface Heat Flux by : Curt H. Liebert
Download or read book Measurement of Local High-level, Transient Surface Heat Flux written by Curt H. Liebert and published by . This book was released on 1988 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Non-contact Heat Flux Measurement Using a Transparent Sensor by : Daniel Ng
Download or read book Non-contact Heat Flux Measurement Using a Transparent Sensor written by Daniel Ng and published by . This book was released on 1993 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Control of Boundary Layer Instability in Hypervelocity Flow by : Hans G. Hornung
Download or read book Control of Boundary Layer Instability in Hypervelocity Flow written by Hans G. Hornung and published by . This book was released on 2002 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous theoretical work predicted that hypersonic boundary layer instability could be controlled by ultrasonically absorptive wall treatment. Experiments were performed to test this theory by constructing a model, a 5 deg. half-angle cone, with very fine porosity on one side and a solid surface on the other, and testing it in the hypervelocity shock tunnel at Caltech. The results show that a dramatic delay of transition could be achieved in the nitrogen flow for which the porosity was designed. In carbon-dioxide flows, for which the transition Reynolds number is much higher at the high enthalpies of the experiments, the porosity on the model is too coarse and acts like roughness, actually advancing transition. The transition delay achievable with proper porosity design promises large reduction of heat loads on launch and reentry vehicles.
Book Synopsis Development of a Laser-induced Heat Flux Technique for Measurement of Convective Heat Transfer Coefficients in a Supersonic Flowfield by : A. Robert Porro
Download or read book Development of a Laser-induced Heat Flux Technique for Measurement of Convective Heat Transfer Coefficients in a Supersonic Flowfield written by A. Robert Porro and published by . This book was released on 1991 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sensible Heat Flux Measurements Near a Cold Surface by :
Download or read book Sensible Heat Flux Measurements Near a Cold Surface written by and published by DIANE Publishing. This book was released on with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Technique for Investigation of Instantaneous Wall Heat Flux to a Turbulent Boundary Layer in Water by : Stanford University. Thermosciences Division. Thermosciences Division
Download or read book An Experimental Technique for Investigation of Instantaneous Wall Heat Flux to a Turbulent Boundary Layer in Water written by Stanford University. Thermosciences Division. Thermosciences Division and published by . This book was released on 1991 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Technique for Experimental Investigation of Heat Transfer from a Surface in Supersonic Flow at Large Surface-to-free-stream Temperature Ratios by : W. A. Bradfield
Download or read book A Technique for Experimental Investigation of Heat Transfer from a Surface in Supersonic Flow at Large Surface-to-free-stream Temperature Ratios written by W. A. Bradfield and published by . This book was released on 1958 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experimental technique presented provides a surface of controlled moderately high temperature in a flow of homogeneous and chemically determined gas at high speeds. With this technique it is possible to make detailed temperature and power dissipation surveys over the controlled surface. Detailed Schlieren studies of processes occurring in the boundary layer at the heated surface under these circumstances may be obtained. It is possible to determine mass flux rates from small surface areas with comparatively good accuracy. The present laminar result shows reasonable correlation with the reference enthalpy method of predicting local values of heat flux but the correlation of this data with the theory must be substantiated by additional information. The investigation of heat flux in a region of a strong boundary layer shock wave interaction gives values approximately 4.5 times higher than those predicted by the laminar theory. Surface deterioration studies indicate that a silicon carbide coating on a graphite surface may be a practical inhibitor of surface deterioration at temperatures up to 3200 R in air.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Flux written by Gianluca Cirimele and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat flux or thermal flux is the rate of heat energy transfer through a given surface. In this book, the authors present topical research in the study of the processes, measurement techniques and applications of heat flux. Topics discussed include measuring heat flux and heat transfer coefficients; the science and application of heat flux biocalorimetry; measuring the thermal conductivity and the heat flux of soil as a function of air pressure; the net heat flux in the Mediterranean Sea; simulation of heat flux transport in the edge plasma of small size diverter tokamak and meridional heat fluxes in the North Indian Ocean.
Book Synopsis Heat Transfer Measurements, Analysis, and Flow Visualization by : R. K. Shah
Download or read book Heat Transfer Measurements, Analysis, and Flow Visualization written by R. K. Shah and published by . This book was released on 1989 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Determination of Heat Transfer Coefficients in Oscillatory Two-phase Annular Flow by : Kristofer Michael Dressler
Download or read book Experimental Determination of Heat Transfer Coefficients in Oscillatory Two-phase Annular Flow written by Kristofer Michael Dressler and published by . This book was released on 2018 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Upward concurrent two-phase annular flow occurs in many evaporating, condensing and reacting flows. In vaporizing flow systems involving high heat flux in multiple parallel channels, thermohydraulic instabilities are frequent, resulting in pulsing or oscillating flow. The work describe here presents a unique data set involving wall temperature, film thickness and pressure drops. Making these measurements simultaneously allows comparison of published heat transfer coefficient correlations with experimentally determined HTCs. One published model relates HTC to the wall shear, tau, and film thickness, delta. The delta-tau model consistently under-predicts the measured heat transfer coefficient. Further, as pulse frequency increases, both the film thickness and heat transfer coefficient respond less to the oscillating flow.
Download or read book Air Force Research Resumés written by and published by . This book was released on with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
