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Time Asymptotic Solutions Of Blunt Body Stagnation Region Flows With Nongray Emission And Absorption Of Radiation
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Book Synopsis Solutions of Blunt-body Stagnation-region Flows with Nongray Emission and Absorption of Radiation by a Time-asymptotic Technique by : Linwood B. Callis
Download or read book Solutions of Blunt-body Stagnation-region Flows with Nongray Emission and Absorption of Radiation by a Time-asymptotic Technique written by Linwood B. Callis and published by . This book was released on 1969 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: A second-order time-asymptotic solution to radiation-coupled stagnation-region flows is presented. The solution is applied to the hypervelocity flow over blunt vehicles of inviscid, nonconducting, equilibrium air, emitting and absorbing nongray radiation. Velocities, nose radii, and altitudes covered by the analysis are sufficient to bracket reentry trajectories of current interest. Radiative heat-transfer rates for the range of interest and typical profiles of pressure, density, enthalpy, temperature, and velocity are shown. The nature of time-asymptotic solution is discussed and it is shown o be a feasible means of achieving second-order accurate solutions to radiation-coupled shock-layer flows. Step-function models of the absorption coefficient are used in order to evaluate the divergence of the radiation flux vector. An analysis is carried out to determine what effect variations in the spectral complexity of the step model absorption coefficients used in the analysis will have on the thermodynamic and flow profiles of interest and on the nongray radiative heat-transfer rates. In this connection use is made of consistent model absorption coefficients having one to nine spectral steps with free-free, free-bound (including atomic line transitions), and molecular transitions taken into account. Relatively simple models of the absorption coefficient can be used with no significant loss of accuracy. An existing correlation for the cooling factor, the ratio of the radiation heat-transfer rate to the adiabatic radiation heat-transfer rate, is extended to larger velocities than heretofore considered.
Book Synopsis Solutions of Blunt-body Stagnation-region Flows with Nongray Emission and Absorption of Radiation by a Time-asymptotic Technique by : Linwood B. Callis
Download or read book Solutions of Blunt-body Stagnation-region Flows with Nongray Emission and Absorption of Radiation by a Time-asymptotic Technique written by Linwood B. Callis and published by . This book was released on 1969 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time Asymptotic Solutions of Blunt-body Stagnation-region Flows with Nongray Emission and Absorption of Radiation by : Linwood B. Callis
Download or read book Time Asymptotic Solutions of Blunt-body Stagnation-region Flows with Nongray Emission and Absorption of Radiation written by Linwood B. Callis and published by . This book was released on 1968 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solution of Blunt-body Stagnation-region Flows with Nongray Emission and Absorption of Radiation by a Time-asymptotic Technique by : Linwood B. Callis
Download or read book Solution of Blunt-body Stagnation-region Flows with Nongray Emission and Absorption of Radiation by a Time-asymptotic Technique written by Linwood B. Callis and published by . This book was released on 1969 with total page 53 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:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1969 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1969 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. National Aeronautics and Space Administration Scientific and Technical Information Division Publisher : ISBN 13 : Total Pages :966 pages Book Rating :4.F/5 ( download)
Book Synopsis NASA Scientific and Technical Reports by : United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Download or read book NASA Scientific and Technical Reports written by United States. National Aeronautics and Space Administration Scientific and Technical Information Division and published by . This book was released on 1970 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. National Aeronautics and Space Administration. Scientific and Technical Information Division Publisher : ISBN 13 : Total Pages :962 pages Book Rating :4.E/5 ( download)
Book Synopsis A Selected Listing of NASA Scientific and Technical Reports by : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Download or read book A Selected Listing of NASA Scientific and Technical Reports written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1970 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. National Aeronautics and Space Administration. Scientific and Technical Information Division Publisher : ISBN 13 : Total Pages :956 pages Book Rating :4.:/5 (317 download)
Book Synopsis NASA Scientific and Technical Reports and Publications for 1969 - A Selected Listing by : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Download or read book NASA Scientific and Technical Reports and Publications for 1969 - A Selected Listing written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1970 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Report written by and published by . This book was released on 1969 with total page 866 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 1979 with total page 1504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Curve Fits of Predicted Inviscid Stagnation-point Radiative Heating Rates, Cooling Factors, and Shock Standoff Distances for Hyperbolic Earth Entry by : John Timothy Suttles
Download or read book Curve Fits of Predicted Inviscid Stagnation-point Radiative Heating Rates, Cooling Factors, and Shock Standoff Distances for Hyperbolic Earth Entry written by John Timothy Suttles and published by . This book was released on 1974 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Curve-fit formulas are presented for the stagnation-point radiative heating rate, cooling factor, and shock standoff distance for inviscid flow over blunt bodies at conditions corresponding to high-speed earth entry. The data which were curve fitted were calculated by using a technique which utilizes a one-strip integral method and a detailed nongray radiation model to generate a radiatively coupled flow-field solution for air in chemical and local thermodynamic equilibrium. The range of free-stream parameters considered were altitudes from about 55 to 70 km and velocities from about 11 to 16 km.sec. Spherical bodies with nose radii from 30 to 450 cm and elliptical bodies with major-to-minor axis ratios of 2, 4, and 6 were treated. Powerlaw formulas are proposed and a least-squares logarithmic fit is used to evaluate the constants. It is shown that the data can be described in this manner with an average deviation of about 3 percent (or less) and a maximum deviation of about 10 percent (or less). The curve-fit formulas provide an effective and economic means for making preliminary design studies for situations involving high-speed earth entry.
Download or read book Comptes Rendus written by and published by . This book was released on 1970 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Propulsion re-entry physics written by and published by . This book was released on 1970 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
