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Geoffrey M. Dailey - One of the best experts on this subject based on the ideXlab platform.
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A Novel Transient Liquid Crystal Technique to Determine Heat Transfer Coefficient Distributions and Adiabatic Wall Temperature in a Three-Temperature Problem
Journal of Turbomachinery, 2003Co-Authors: Andrew C. Chambers, David R. H. Gillespie, Peter T. Ireland, Geoffrey M. DaileyAbstract:Transient liquid crystal techniques are widely used for experimental heal transfer measurements. In many instances it is necessary to model the heat transfer resulting from the Temperature difference between a mixture of two gas streams and a solid surface. To nondimensionally characterize the heat transfer from scale models it is necessary to know both the heal transfer coefficient and adiabatic wall Temperature of the model. Traditional techniques rely on deducing both parameters from a single test. This is a poorly conditioned Problem. A novel strategy is proposed in which both parameters are deduced from a well-conditioned three-test strategy. The heat transfer coefficient is first calculated in a single test; the contribution from each driving gas stream is then deduced using additional tests. Analytical techniques are developed to deal with variations in the Temperature profile and transient start time of each flow. The technique is applied to the analysis of the heat transfer within a low aspect ratio impingement channel with initial cross flow.
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A Novel Transient Liquid Crystal Technique to Determine Heat Transfer Coefficient Distributions and Adiabatic Wall Temperature in a Three Temperature Problem
Volume 3: Turbo Expo 2002 Parts A and B, 2002Co-Authors: Andrew C. Chambers, David R. H. Gillespie, Peter T. Ireland, Geoffrey M. DaileyAbstract:Transient liquid crystal techniques are widely used for experimental heat transfer measurements. In many instances it is necessary to model the heat transfer resulting from the Temperature difference between a mixture of two gas streams and a solid surface. To non-dimensionally characterise the heat transfer from scale models it is necessary to know both the heat transfer coefficient and adiabatic wall Temperature of the model. Traditional techniques rely on deducing both parameters from a single test. This is a poorly conditioned Problem. A novel strategy is proposed in which both parameters are deduced from a well conditioned three test strategy. The heat transfer coefficient is first calculated in a single test; the contribution from each driving gas stream is then deduced using additional tests. Analytical techniques are developed to deal with variations in the Temperature profile and transient start time of each flow. The technique is applied to the analysis of the heat transfer within a low aspect ratio impingement channel with initial cross flow.Copyright © 2002 by ASME
Andrew C. Chambers - One of the best experts on this subject based on the ideXlab platform.
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A Novel Transient Liquid Crystal Technique to Determine Heat Transfer Coefficient Distributions and Adiabatic Wall Temperature in a Three-Temperature Problem
Journal of Turbomachinery, 2003Co-Authors: Andrew C. Chambers, David R. H. Gillespie, Peter T. Ireland, Geoffrey M. DaileyAbstract:Transient liquid crystal techniques are widely used for experimental heal transfer measurements. In many instances it is necessary to model the heat transfer resulting from the Temperature difference between a mixture of two gas streams and a solid surface. To nondimensionally characterize the heat transfer from scale models it is necessary to know both the heal transfer coefficient and adiabatic wall Temperature of the model. Traditional techniques rely on deducing both parameters from a single test. This is a poorly conditioned Problem. A novel strategy is proposed in which both parameters are deduced from a well-conditioned three-test strategy. The heat transfer coefficient is first calculated in a single test; the contribution from each driving gas stream is then deduced using additional tests. Analytical techniques are developed to deal with variations in the Temperature profile and transient start time of each flow. The technique is applied to the analysis of the heat transfer within a low aspect ratio impingement channel with initial cross flow.
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A Novel Transient Liquid Crystal Technique to Determine Heat Transfer Coefficient Distributions and Adiabatic Wall Temperature in a Three Temperature Problem
Volume 3: Turbo Expo 2002 Parts A and B, 2002Co-Authors: Andrew C. Chambers, David R. H. Gillespie, Peter T. Ireland, Geoffrey M. DaileyAbstract:Transient liquid crystal techniques are widely used for experimental heat transfer measurements. In many instances it is necessary to model the heat transfer resulting from the Temperature difference between a mixture of two gas streams and a solid surface. To non-dimensionally characterise the heat transfer from scale models it is necessary to know both the heat transfer coefficient and adiabatic wall Temperature of the model. Traditional techniques rely on deducing both parameters from a single test. This is a poorly conditioned Problem. A novel strategy is proposed in which both parameters are deduced from a well conditioned three test strategy. The heat transfer coefficient is first calculated in a single test; the contribution from each driving gas stream is then deduced using additional tests. Analytical techniques are developed to deal with variations in the Temperature profile and transient start time of each flow. The technique is applied to the analysis of the heat transfer within a low aspect ratio impingement channel with initial cross flow.Copyright © 2002 by ASME
I.v. Panferov - One of the best experts on this subject based on the ideXlab platform.
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The asymmetrical mixed Temperature Problem for a transversely isotropic elastic layer
Journal of Applied Mathematics and Mechanics, 2001Co-Authors: I.v. PanferovAbstract:The Problem of the uniform heating of a two-layer plate is solved. The transversely isotropic elastic layer (soft plate) investigated is in ideal contact with an absolutely rigid layer, deformable only by thermal expansion. The generalized plane Temperature Problem reduces to determining the stress-strain state of the soft anisotropic layer investigated using the equations of the mixed Problem of elasticity theory. At the ends of the boundary layer of the soft plate (a thin contact layer), no conditions are imposed. On the remaining part of the ends of the soft plate, the boundary conditions correspond to a free boundary. The Problem has a bounded smooth solution. Unlike the approach described earlier [1], it is proposed to seek an accurate solution in the form of ordinary Fourier series with respect to a single longitudinal coordinate. Solutions in polynomials are also used. It is shown that the existence of these solutions in polynomials enables the convergence of the Fourier series to be improved considerably.
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The mixed symmetrical Temperature Problem for a transversely isotropic elastic layer
Journal of Applied Mathematics and Mechanics, 2000Co-Authors: I.v. PanferovAbstract:Abstract The Problem of the uniform heating of a symmetrical three-layer plate with absolutely rigid outer layers, deformed solely due to thermal expansion, is solved. The generalized plane Temperature Problem is reduced to determining the stress-strain state, which is symmetrical with respect to two coordinates, of the inner layer (a soft filler) of transversely isotropic material using the equations of the mixed Problem of elasticity theory. The layers are in ideal mutual contact. The conditions at the ends of the filler boundary layer (a thin contact layer) are not specified. On the remaining part of the ends of the filler the boundary conditions correspond to a free boundary. The Problem has a finite smooth solution. The construct the exact solution a modification of Mathieu's method [1] is proposed, which consists of the fact that, in addition to ordinary Fourier series, solutions in polynomials are used. It is shown that the presence of these solutions in polynomials enables the convergence of the Fourier series to be accelerated considerably.
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UNIFORM HEATING OF A LOCALLY INHOMOGENEOUS ELASTIC PLATE
Journal of Applied Mathematics and Mechanics, 1996Co-Authors: I.v. PanferovAbstract:Abstract The plane Problem of the uniform heating of a locally inhomogeneous elastic isotropic plate is solved. The inhomogeneity of the material in question is concentrated in a circle or a ring, and the thermomechanical characteristics of the material have circular symmetry and vary sharply inside this circle or ring. The functions representing the properties of the material are continuous everywhere (together with its first derivatives) and take constant values outside the region of local inhomogeneity. The case of an infinite plate is considered. In addition, the Temperature Problem for a finite plate, when the dimensions of this plate are much greater than the dimensions of the region of inhomogeneity, is also solved. A semianalytic method of solving such Temperature Problems is proposed.
David R. H. Gillespie - One of the best experts on this subject based on the ideXlab platform.
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A Novel Transient Liquid Crystal Technique to Determine Heat Transfer Coefficient Distributions and Adiabatic Wall Temperature in a Three-Temperature Problem
Journal of Turbomachinery, 2003Co-Authors: Andrew C. Chambers, David R. H. Gillespie, Peter T. Ireland, Geoffrey M. DaileyAbstract:Transient liquid crystal techniques are widely used for experimental heal transfer measurements. In many instances it is necessary to model the heat transfer resulting from the Temperature difference between a mixture of two gas streams and a solid surface. To nondimensionally characterize the heat transfer from scale models it is necessary to know both the heal transfer coefficient and adiabatic wall Temperature of the model. Traditional techniques rely on deducing both parameters from a single test. This is a poorly conditioned Problem. A novel strategy is proposed in which both parameters are deduced from a well-conditioned three-test strategy. The heat transfer coefficient is first calculated in a single test; the contribution from each driving gas stream is then deduced using additional tests. Analytical techniques are developed to deal with variations in the Temperature profile and transient start time of each flow. The technique is applied to the analysis of the heat transfer within a low aspect ratio impingement channel with initial cross flow.
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A Novel Transient Liquid Crystal Technique to Determine Heat Transfer Coefficient Distributions and Adiabatic Wall Temperature in a Three Temperature Problem
Volume 3: Turbo Expo 2002 Parts A and B, 2002Co-Authors: Andrew C. Chambers, David R. H. Gillespie, Peter T. Ireland, Geoffrey M. DaileyAbstract:Transient liquid crystal techniques are widely used for experimental heat transfer measurements. In many instances it is necessary to model the heat transfer resulting from the Temperature difference between a mixture of two gas streams and a solid surface. To non-dimensionally characterise the heat transfer from scale models it is necessary to know both the heat transfer coefficient and adiabatic wall Temperature of the model. Traditional techniques rely on deducing both parameters from a single test. This is a poorly conditioned Problem. A novel strategy is proposed in which both parameters are deduced from a well conditioned three test strategy. The heat transfer coefficient is first calculated in a single test; the contribution from each driving gas stream is then deduced using additional tests. Analytical techniques are developed to deal with variations in the Temperature profile and transient start time of each flow. The technique is applied to the analysis of the heat transfer within a low aspect ratio impingement channel with initial cross flow.Copyright © 2002 by ASME
Peter T. Ireland - One of the best experts on this subject based on the ideXlab platform.
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A Novel Transient Liquid Crystal Technique to Determine Heat Transfer Coefficient Distributions and Adiabatic Wall Temperature in a Three-Temperature Problem
Journal of Turbomachinery, 2003Co-Authors: Andrew C. Chambers, David R. H. Gillespie, Peter T. Ireland, Geoffrey M. DaileyAbstract:Transient liquid crystal techniques are widely used for experimental heal transfer measurements. In many instances it is necessary to model the heat transfer resulting from the Temperature difference between a mixture of two gas streams and a solid surface. To nondimensionally characterize the heat transfer from scale models it is necessary to know both the heal transfer coefficient and adiabatic wall Temperature of the model. Traditional techniques rely on deducing both parameters from a single test. This is a poorly conditioned Problem. A novel strategy is proposed in which both parameters are deduced from a well-conditioned three-test strategy. The heat transfer coefficient is first calculated in a single test; the contribution from each driving gas stream is then deduced using additional tests. Analytical techniques are developed to deal with variations in the Temperature profile and transient start time of each flow. The technique is applied to the analysis of the heat transfer within a low aspect ratio impingement channel with initial cross flow.
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A Novel Transient Liquid Crystal Technique to Determine Heat Transfer Coefficient Distributions and Adiabatic Wall Temperature in a Three Temperature Problem
Volume 3: Turbo Expo 2002 Parts A and B, 2002Co-Authors: Andrew C. Chambers, David R. H. Gillespie, Peter T. Ireland, Geoffrey M. DaileyAbstract:Transient liquid crystal techniques are widely used for experimental heat transfer measurements. In many instances it is necessary to model the heat transfer resulting from the Temperature difference between a mixture of two gas streams and a solid surface. To non-dimensionally characterise the heat transfer from scale models it is necessary to know both the heat transfer coefficient and adiabatic wall Temperature of the model. Traditional techniques rely on deducing both parameters from a single test. This is a poorly conditioned Problem. A novel strategy is proposed in which both parameters are deduced from a well conditioned three test strategy. The heat transfer coefficient is first calculated in a single test; the contribution from each driving gas stream is then deduced using additional tests. Analytical techniques are developed to deal with variations in the Temperature profile and transient start time of each flow. The technique is applied to the analysis of the heat transfer within a low aspect ratio impingement channel with initial cross flow.Copyright © 2002 by ASME
