Download or read book On Determination of Transient Surface Temperature and Heat Flux by Imbedded Thermocouple in a Hollow Cylinder written by Ching-Jen Chem and published by . This book was released on 1974 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical analysis for determination of transient surface temperature and heat flux as measured by an embedded thermocouple in a hollow cylinder is given for the Fourier modulus less than 0.01. This solution is presented as a single series in which only the coefficients of the series depend on the experiment; specifically, the temperature response measured by a thermocouple. The solution may be used to predict surface heat flux and temperature distribution of gun barrels or any other highly transient cyclical thermal device by means of a temperature probe which can be positioned remote from the surface. (Modified author abstract).

Download or read book Inverse Heat Transfer written by M. Necat Ozisik and published by Routledge. This book was released on 2018-05-02 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the fundamental concepts of inverse heat transfer problems. It presents in detail the basic steps of four techniques of inverse heat transfer protocol, as a parameter estimation approach and as a function estimation approach. These techniques are then applied to the solution of the problems of practical engineering interest involving conduction, convection, and radiation. The text also introduces a formulation based on generalized coordinates for the solution of inverse heat conduction problems in two-dimensional regions.

Download or read book Prediction of Transient Surface Heat Flux and Temperature on a Hollow Cylinder written by Hsai-Yin Lee and published by . This book was released on 1981 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation of a Remote Transient Heat Flux Sensor Part I Prediction of Surface Temperature and Heat Flux written by Ching-Jen Chen and published by . This book was released on 1974 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first part of the final report is the prediction of transient surface temperature and heat flux by inverting the temperature response measured at an interior point of a solid material. The configuration considered is a semi-infinite slab, but the inversed solution for prediction of surface temperature and heat flux is shown applicable to a thick slab and hollow cylinder in a transient period for most gun barrel problems to within 5% of accuracy. A table of calibration for use of a foreign single thermocouple wire, with the other wire being the barrel material, is given for constantan, iron, chromel and alumel between 75 to 210 deg. F. (Author).

Download or read book Determination of Thermal Properties Using Embedded Thermocouples written by Nicholas Anthony Lister and published by . This book was released on 2010 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Purpose of this thesis is to experimentally demonstrate an inversion analysis technique, developed by Dr. Jay Frankel (UTK), that utilizes transient temperature data from probes embedded at known locations in a material. This allows one to determine thermal properties (thermal diffusivity and thermal conductivity) of the material, surface temperature, and the surface heat flux as they change with time. Dr. Frankel's inversion method can be used to determine surface temperature and heat flux of a one-dimensional semi-infinite slab based on the transient data from one or two embedded probes, if the thermal conductivity and thermal diffusivity of the material are known. Frankel's theory suggests that the thermal properties of the material can be determined if transient data from two thermocouple (TC) probes at known locations and the heat flux at the surface are known. This thesis investigates finding the thermal properties and surface temperature of materials using a two embedded thermocouple approach. As an initial check to the inversion analysis, the theoretical temperature solution for a one-dimensional semi-infinite slab was used. This validated that the analysis could converge to the constant thermal properties for the theoretical material. An experiment was run again to provide data for the materials copper and aluminum. Using a real material is fundamentally different from using theoretical determined (analytical) data, because the thermal properties for a real material vary with temperature. Since the inversion analysis converged to a constant solution for the theoretical temperatures, it was believed that the real material will converge to a solution. However, it was seen that the thermal diffusivity for the real materials never converged to the expected value. Although, when a constant handbook value for the thermal diffusivity is used to calculate the thermal conductivities from the experimental temperature data collected from the internal probes, the inversion analysis resulted in good agreement with experiment.

Download or read book Determination of Surface Heat Flux Using a Single Embedded Thermocouple written by and published by . This book was released on 1976 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transient Surface Temperature Measurements Using NANMAC Eroding Thermocouples written by Jalaal Ebrahimzadeh and published by . This book was released on 1983 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Industrial Combustion Testing written by Jr., Charles E. Baukal and published by CRC Press. This book was released on 2010-07-29 with total page 777 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until now, anyone conducting industrial combustion tests had to either rely on old methods, go scurrying through the literature to find proven applicable methodologies, or hire top-shelf consultants such as those that work for cutting-edge companies like John Zink. Manufacturers can no longer take industrial combustion for granted. Air and noise po

Download or read book Government Reports Announcements written by and published by . This book was released on 1974 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research in Progress written by and published by . This book was released on 1975 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimation of Surface Temperature and Heat Flux Using Embedded Thermocouples written by and published by . This book was released on 2007 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates several new methods for estimating surface temperature and heat flux based on thermocouples embedded within the interior of a test article. The test apparatus was a Mach 2 axisymmetric rocket nozzle with probes embedded at depths of 1/8" and 1/4" from the inner surface of the nozzle at the throat and exit locations. Three methods for numerically estimating temperature and heat flux at the surface of the nozzle were considered: a one-thermocouple slab-coordinate method, a two-thermocouple slabcoordinate method, and a finite-element analysis (FEA) based on a one-dimensional cylindrical coordinate method. Comparisons between the methods, as well as temperature and heat flux uncertainties caused by the axial location of the thermocouple probes (and resulting radius of curvature of the nozzle materials considerations), are presented. The slab-coordinate two-thermocouple and FEA methods show good agreement in both thermocouple probe axial locations, but the one-thermocouple measurement showed significant uncertainty for the throat location, but offered good agreement at the exit location. Suggestions are made for future improvements in experimentation and analysis methods.

Download or read book Correction of Transient Solid embedded Thermocouple Data with Application to Inverse Heat Conduction written by August N. F. Johnson and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The current research investigates the use of solid-embedded thermocouples for determining accurate transient temperature measurements within a solid medium, with emphasis on measurements intended for use in inverse heat conduction problems. Metal casting experiments have been conducted to collect internal mold temperatures to be used, through inverse conduction methods, to estimate the heat exchange between a casting and mold. Inverse conduction methods require accurate temperature measurements for valid boundary estimates. Therefore, various sources of thermocouple measurement uncertainty are examined and some suggestions for uncertainty reduction are presented. Thermocouple installation induced bias uncertainties in experimental temperature data are dynamically corrected through the development and implementation of an embedded thermocouple correction (ETC) transfer function. Comparisons of experimental data to dynamically adjusted data, as well as the inverse conduction estimates for heat flux from each data set, are presented and discussed.

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1974 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Single thermocouple Method for Determining Heat Flux to a Thermally Thick Wall written by Floyd G. Howard and published by . This book was released on 1968 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1977 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Method for the Determination of Local Heat Flux from Transient Temperature Measurements written by Walter B. Powell and published by . This book was released on 1964 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: