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Maximum Thrust Nozzles For Rotational Or Nonequilibrium Simple Dissociating Gas Flows Including Boundary Layer Effects
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Book Synopsis Maximum Thrust Nozzles for Rotational Or Nonequilibrium Simple Dissociating Gas Flows Including Boundary Layer Effects by : M. Peter Scofield
Download or read book Maximum Thrust Nozzles for Rotational Or Nonequilibrium Simple Dissociating Gas Flows Including Boundary Layer Effects written by M. Peter Scofield and published by . This book was released on 1969 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: A formulation, numerical solution technique and computer program implementing the technique are presented for the design of maximum thrust nozzles for rotational or nonequilibrium simple dissociating gas flows including boundary layer effects. The formulation is based on the usual assumptions applicable to rotational and nonequilibrium simple dissociating gas flows and on the assumption that the boundary layer is thin. The thrust is written as the integral of the stress tensor acting along the supersonic nozzle wall on which a general isoperimetric design constraint is also applied. The thrust expression is maximized by application of the calculus of variations. The resulting set of design equations are hyperbolic partial differential equations valid in the region of interest and algebraic equations specifying the boundary conditions for the Lagrange multipliers of the extremal problem. The numerical solution technique presented is based on a simplified relaxation technique which does not require numerical differentiation. The results of a brief study to determine the magnitude of the performance increases that can be expected by considering more accurate flow chemistry models are also presented. (Author).
Book Synopsis Maximum Thrust Nozzles for Rotational Or Nonequilibrium Simple Dissociating Gas Flows Including Boundary Layer Effects by : M. Peter Scofield
Download or read book Maximum Thrust Nozzles for Rotational Or Nonequilibrium Simple Dissociating Gas Flows Including Boundary Layer Effects written by M. Peter Scofield and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Maximum Thrust Nozzles for Rotational Or Nonequilibrium Simple Dissociating Gas Flows Including Boundary Layer Effects by : M. Peter Scofield
Download or read book Maximum Thrust Nozzles for Rotational Or Nonequilibrium Simple Dissociating Gas Flows Including Boundary Layer Effects written by M. Peter Scofield and published by . This book was released on 1969 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: A formulation, numerical solution technique and computer program implementing the technique are presented for the design of maximum thrust nozzles for rotational or nonequilibrium simple dissociating gas flows including boundary layer effects. The formulation is based on the usual assumptions applicable to rotational and nonequilibrium simple dissociating gas flows and on the assumption that the boundary layer is thin. The thrust is written as the integral of the stress tensor acting along the supersonic nozzle wall on which a general isoperimetric design constraint is also applied. The thrust expression is maximized by application of the calculus of variations. The resulting set of design equations are hyperbolic partial differential equations valid in the region of interest and algebraic equations specifying the boundary conditions for the Lagrange multipliers of the extremal problem. The numerical solution technique presented is based on a simplified relaxation technique which does not require numerical differentiation. It is felt that this new solution technique will encourage the use of the general design formulation. The results of a brief study to determine the magnitude of the performance increases that can be expected by considering more accurate flow chemistry models are also presented. The results indicate that significant improvements may be possible. (Author).
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thrust Nozzle Optimization for Non-Equilibrium, Chemically Reacting Flows Including Boundary Layer Effects by : Joe D. Hoffman
Download or read book Thrust Nozzle Optimization for Non-Equilibrium, Chemically Reacting Flows Including Boundary Layer Effects written by Joe D. Hoffman and published by . This book was released on 1969 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: An optimization analysis and a method for the application of the results are presented for the design of axisymmetric or two-dimensional optimum thrust nozzles for non-equilibrium chemically reacting flows including boundary layer effects. The analysis is based on the usual assumptions applicable to non-equilibrium, chemically reacting flows, and on the assumption that the boundary layer is thin. The problem is formulated to maximize the pressure thrust integral along the supersonic wall contour for a general isoperimetric design constraint. The results of the optimization analysis are a set of hyperbolic partial differential equations for determining the Lagrange multipliers of the optimization problem in the region of interest, and a set of algebraic equations for determining the initial and boundary conditions for these multipliers on the boundaries of the region. Two special cases of the general results for non-equilibrium, chemically reacting flows are presented. These are: (1) flow of a simple dissociating gas, and (2) equilibrium or frozen flow of a general gas mixture. Nozzle design schemes for these two special cases are derived by appropriate reduction of the results for the general case. Numerical schemes for these special cases are discussed. (Author).
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 1972 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1996 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design of Maximum Thrust Nozzles with Nonequilibrium, Chemically Reacting Flow. Volume I. Theoretical Development and Results by : Allan A. Taylor
Download or read book Design of Maximum Thrust Nozzles with Nonequilibrium, Chemically Reacting Flow. Volume I. Theoretical Development and Results written by Allan A. Taylor and published by . This book was released on 1971 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis is presented which permits the design of maximum thrust nozzles for nonequilibrium chemically reacting gas flows. The analysis is based upon the governing equations for a general, multi-component reacting gas. The effects of viscosity, multiple phases, body forces and mixing are neglected. All other states of the gas are assumed to be in equilibrium. Design of the nozzle contour is posed subject to a general isoperimetric constraint. The thrust to be maximized is written in terms of an integral of the pressure forces on the nozzle wall. The design constraints and governing equations are incorporated into the integral to be maximized by means of Lagrange multipliers. (Author).
Download or read book AIAA Bulletin written by and published by . This book was released on 1970 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Dissertation Index by :
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1969 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of the AIAA. by : American Institute of Aeronautics and Astronautics
Download or read book Publications of the AIAA. written by American Institute of Aeronautics and Astronautics and published by . This book was released on 1970 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design of Maximum Thrust Nozzles with Nonequilibrium, Chemically Reacting Flow. Volume II. Computer Program Manual by : Allan A. Taylor
Download or read book Design of Maximum Thrust Nozzles with Nonequilibrium, Chemically Reacting Flow. Volume II. Computer Program Manual written by Allan A. Taylor and published by . This book was released on 1971 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume I of this report contains the theoretical development for design of maximum thrust nozzles with nonequilibrium, chemically reacting flow. The results of selected parametric studies are also presented. This volume contains a discussion of the computer program that was developed to permit the design capability. The organization of the program is presented and general information is given. An abbreviated description of all the subroutines is given. The input data are discussed in some depth, to assist the potential designer. Finally, four sample cases are presented, one in detail to illustrate the various input options. (Author).
Download or read book Journal of Hydronautics written by and published by . This book was released on 1971 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thrust Nozzle Optimization Including Boundary Layer Effects by : M. Peter Scofield
Download or read book Thrust Nozzle Optimization Including Boundary Layer Effects written by M. Peter Scofield and published by . This book was released on 1967 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: An optimization analysis, a numerical method, and a computer program for the design of optimum thrust nozzles including boundary layer effects are presented. The analysis is based on the assumptions that the flow is homentropic and that the boundary layer is thin. The problem is formulated to maximize the pressure thrust integral along the supersonic wall contour for a general isoperimetric constraint. The results of the optimization analysis are a set of hyperbolic partial differential equations for determining the Lagrange multipliers in the region of interest, and a set of algebraic equations for determining the initial and boundary conditions for these multipliers on the boundaries of the region. The numerical method employes a simplified relaxation technique which, it is felt, will encourage the use of this general design technique. A preliminary parametric study was conducted to determine the possible percent thrust improvement that can be obtained by the inclusion of the boundary layer effects. (Author).
Book Synopsis Design of Maximum Thrust Nozzles for Gas-Particle Flows. Volume 1. Theoretical Development and Results by :
Download or read book Design of Maximum Thrust Nozzles for Gas-Particle Flows. Volume 1. Theoretical Development and Results written by and published by . This book was released on 1971 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: An optimization analysis is presented for nozzles with gas-particle flows. The problem is formulated to maximize the axial thrust produced along the nozzle contour for a general isoperimetric constraint such as constant nozzle length or constant nozzle surface area. The effects of the ambient pressure are included in the thrust expression to be maximized. The characteristic and compatibility equations are developed and numerical techniques are presented for use in conjunction with the characteristic and compatibility equations. A solution procedure is presented which determines whether or not a given nozzle contour is an optimal solution and a relaxation technique is presented which adjusts the nozzle contour toward the optimal solution. Selected parametric studies are presented. These studies illustrate the effects of changing mesh size, particle size, particle mass flow rate, inlet angle, drag coefficients, heat transfer coefficients, throat radius of curvature, and the scale on the thrust performance and the nozzle geometry of the optimal, fixed length nozzle.
Book Synopsis Design of Maximum Thrust Plug Nozzles for Fixed Inlet Geometry by : H. Doyle Thompson
Download or read book Design of Maximum Thrust Plug Nozzles for Fixed Inlet Geometry written by H. Doyle Thompson and published by . This book was released on 1970 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The calculus of variations is used to obtain and design equations for the contour of maximum thrust plug nozzles with a fixed inlet geometry and a specified geometric constraint. The optimum values of the injection angle at the throat and the cowl lip radius are determined by a parametric study. The analysis is carried out for irrotational flow and includes boundary layer effects. A method is presented to determine if a given contour is an optimum, and a relaxation technique is used to obtain a solution to the resulting design equations. Numerical examples are presented for a fixed plug length and mass flow rate. (Author).
