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Inviscid Nonadiabatic Flow About Blunt Bodies
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Book Synopsis Inviscid, Nonadiabatic Flow about Blunt Bodies by : K. H. Wilson
Download or read book Inviscid, Nonadiabatic Flow about Blunt Bodies written by K. H. Wilson and published by . This book was released on 1964 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem considered is that of determining the inviscid, nonadiabatic flow field which results when energy loss by radiation becomes significant. The approach taken is to include the radiation term in the energy equation and solve the resulting conservation equations for the flow past a blunt body. The direct blunt-body problem is solved using an integral method of solution. The flow field is determined in an iterative manner in which the shock shape from the previous iteration is used in the current iteration. Hence, in the final analysis, no a priori information about the shock shape is required. Results have been obtained for the flow about a sphere and a hemispherecone under conditions where large energy loss from the shock layer occurs. The nonadiabatic nature of such a flow was found to significantly reduce the shock layer thickness about the body and alter the enthalpy profiles within the shock layer. As expected, the radiative heating is reduced considerably from the adiabatic value for cases where large nonadiabatic effects are present.
Book Synopsis A Method of Integral Relations Solution for Radiating, Nonadiabatic, Inviscid Flow Over a Blunt Body by : John Timothy Suttles
Download or read book A Method of Integral Relations Solution for Radiating, Nonadiabatic, Inviscid Flow Over a Blunt Body written by John Timothy Suttles and published by . This book was released on 1969 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Inverse-method Solution for Radiating, Nonadiabatic, Equilibrium Inviscid Flow Over a Blunt Body by : Ralph A. Falanga
Download or read book An Inverse-method Solution for Radiating, Nonadiabatic, Equilibrium Inviscid Flow Over a Blunt Body written by Ralph A. Falanga and published by . This book was released on 1970 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nonequilibrium Inviscid Flow about Blunt Bodies by :
Download or read book Nonequilibrium Inviscid Flow about Blunt Bodies written by and published by . This book was released on 1964 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An inverse method was used for analyzing the chemically nonequilibrium flow about a blunt body. This method starts with an assumed form of shock shape. The flow field and the thermodynamics behind the shock is determined by a finite difference mesh scheme. The calculation is continued until the sonic point on the body is exceeded. Mass flow rate is integrated along the curvilinear coordinate normal to the shock to determine locations and shapes of the body and the streamlines. The analysis assumes air to be a five-component reacting gas undergoing six coupled reactions with negligible ionization. Complete rate equations including three-body recombinations are used. Numerical examples are given for frozen and nonequilibrium air flows. Three different kinetic models are used for the reacting cases. The results show that even though the pressure and velocities in the shock layer are not sensitive to the air kinetics, the other thermodynamic properties are significantly influenced by the kinetic models chosen. The nitric oxide concentration is greatly enhanced by its direct formation from molecular oxygen and nitrogen. The extra amount of nitric oxide may cause an appreciable increase in gas cap radiation at high altitudes and superorbital velocities. (Author).
Book Synopsis Inviscid, Nonadiabatic Flow Fields Over Blunt, Sonic Corner Bodies for Outer Planet Entry Conditions by a Method of Integral Relations by : Peter A. Gnoffo
Download or read book Inviscid, Nonadiabatic Flow Fields Over Blunt, Sonic Corner Bodies for Outer Planet Entry Conditions by a Method of Integral Relations written by Peter A. Gnoffo and published by . This book was released on 1978 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation has been made into the ability of a method of integral relations to calculate inviscid zero degree angle of attack, radiative heating distributions over blunt, sonic corner bodies for some representative outer planet entry conditions is investigated. Comparisons have been made with a more detailed numerical method, a time asymptotic technique, using the same equilibrium chemistry and radiation transport subroutines. An effort to produce a second order approximation (two-strip) method of integral relations code to aid in this investigation is also described and a modified two-strip routine is presented. Results indicate that the one-strip method of integral relations cannot be used to obtain accurate estimates of the radiative heating distribution because of its inability to resolve thermal gradients near the wall. The two-strip method can sometimes be used to improve these estimates; however, the two-strip method has only a small range of conditions over which it will yield significant improvement over the one-strip method.
Book Synopsis Inviscid Radiating Flow Over a Blunt Body by : Ping Cheng
Download or read book Inviscid Radiating Flow Over a Blunt Body written by Ping Cheng and published by . This book was released on 1966 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of thermal radiation is investigated for the axisymmetric flow over the blunt body associated with a given paraboloidal shock wave. Radiative transfer is treated by means of the differential approximation, which applies to multidimensional flow and is valid throughout the entire range of temperature and optical thickness. The gas is assumed to be perfect and optically grey, and molecular-transport processes are neglected. A semi-analytical solution for the flow and radiation fields is obtained by the method of series truncation. Results are presented, in the strong-shock approximation, for various values of the appropriate dimensionless variables. In general, radiation is found to have significant influence on temperature and density, moderate effect on velocity, and little effect on pressure. The stand-off distance between the shock wave and the body is found to decrease significantly with increasing radiation; the body shape is less affected. The results show correct physical behavior throughout the flow field for all values of optical thickness. The detailed flow quantities exhibit a number of features of multidimensional radiating flow. They also provide a check on the special assumptions made in other, more approximate treatments. Similarities between radiating flow and nonequilibrium reactive flow over blunt bodies are apparent. (Author).
Book Synopsis Inviscid Radiating Shock Layers about Spheres Traveling at Hyperbolic Speeds in Air by : Richard W. Barnwell
Download or read book Inviscid Radiating Shock Layers about Spheres Traveling at Hyperbolic Speeds in Air written by Richard W. Barnwell and published by . This book was released on 1969 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time-dependent finite-difference techniques are used to obtain numerical solutions for the problem of the inviscid flow of radiating equilibrium air past sphere traveling at hyperbolic speeds. The effects of absorption are included, and results are presented for both gray and nongray absorption coefficient models for spheres with different radii. It is shown that the nondimensional heat-flux distributions for the gray and nongray models are similar and that these distributions are weak functions of the radius of the sphere and the altitude and strong functions of the flight velocity.
Book Synopsis A Computer Program to Determine Radiating, Nonadiabatic, Inviscid Flow Over a Blunt Body by the Method of Integral Relations by : Frances W. Taylor
Download or read book A Computer Program to Determine Radiating, Nonadiabatic, Inviscid Flow Over a Blunt Body by the Method of Integral Relations written by Frances W. Taylor and published by . This book was released on 1971 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Design Principles of Spacecraft and Entry Bodies by : Jerry Bevans
Download or read book Thermal Design Principles of Spacecraft and Entry Bodies written by Jerry Bevans and published by Elsevier. This book was released on 2012-12-02 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Astronautics and Aeronautics, Volume 21: Thermal Design Principles of Spacecraft and Entry Bodies is a collection of technical papers drawn mainly from the American Institute of Aeronautics and Astronautics Third Thermophysics Specialist Conference, held in Los Angeles, California on June 24-26, 1968 This volume is divided into three parts. The first part covers some aspects of thermal processes and design, including thermal analysis, convection, radiation, ablation, and space rocket effects. The second part surveys the remote measurements of the thermophysical and thermal radiation properties and joint conductance, which are critical criteria for space thermal design. The third part focuses on the space environmental effects on thermal coatings. This part deals first with the theory of radiative degradation, followed by a presentation of the laboratory measurements. This part also looks into the results of several flight experiments. This book will be of great value to thermophysicists, space engineers, and designers who are working in the space science fields.
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 1978 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis A Method of Integral Relations Solution for Radiating, Nonadiabatic, Inviscid Flow Over a Blunt Body by : John T. Suttles
Download or read book A Method of Integral Relations Solution for Radiating, Nonadiabatic, Inviscid Flow Over a Blunt Body written by John T. Suttles and published by . This book was released on 1969 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Note written by and published by . This book was released on 1974 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1966 with total page 1320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications, Cumulative Index by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications, Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1970 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computations of the Nonequilibrium Flow of a Viscous, Radiating Fluid about a Blunt Axisymmetric Body by : J. T. Curtis
Download or read book Computations of the Nonequilibrium Flow of a Viscous, Radiating Fluid about a Blunt Axisymmetric Body written by J. T. Curtis and published by . This book was released on 1967 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Re-entry and Planetary Entry Physics and Technology by : W.H.T. Loh
Download or read book Re-entry and Planetary Entry Physics and Technology written by W.H.T. Loh and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade, a rapid growth of knowledge in the field of re-entry and planetary entry has resulted in many significant advances useful to the student, engineer and scientist. The purpose of offering this course is to make available to them these recent significant advances in physics and technology. Accordingly, this course is organized into five parts: Part 1, Entry Dynamics, Thermodynamics, Physics and Radiation; Part 2, Entry Abla tion and Heat Transfer; Part 3, Entry Experimentation; Part 4, Entry Concepts and Technology; and Part 5, Advanced Entry Programs. It is written in such a way so that it may easily be adopted by other universities as a textbook for a two semesters senior or graduate course on the sub ject. In addition to the undersigned who served as the course instructor and wrote Chapters, 1, 2, 3 and 4, guest lecturers included: Prof. FRANKLIN K. MOORE who wrote Chapter 5 "Entry Radiative Transfer," Prof. SHIH-I PAI who wrote Chapter 6 "Entry Radiation-Magnetogasdy namics," Dr. CARL GAZLEY, J r. who wrote Chapter 7 "Entry Deaccelera [ion and Mass Change of an Ablating Body," Dr. SINCLAIRE M. SCALA who wrote Chapter 8 "Entry Heat Transfer and Material Response," Mr.
Download or read book Computer Program Abstracts written by and published by . This book was released on 1972 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
