Boundary Layer Flows Over Sharp and Spherically Blunted Cones at Angle of Attack to Supersonic Nonuniform Free Streams. Volume I. Analysis and Results PDF Download
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Author: Michael C. Frieders
Publisher:
ISBN:
Category :
Languages : en
Pages : 131
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Book Description
Methods have been developed to solve the problem of laminar boundary layers on sharp and spherically blunt cones at angle of attack to nonuniform supersonic free streams. A three-dimensional boundary-layer solution is used to solve sharp cone problems and the afterbody of blunt cone problems. An axisymmetric boundary-layer solution is used to solve the axisymmetric region of blunt cones. An existing implicit finite-difference numerical scheme was used to solve both the axisymmetric and three-dimensional boundary-layer equations. A modified inverse method for solving the inviscid flow field is used to provide edge properties for the axisymmetric region of blunt cones. Normalized skin friction and heat transfer coefficients for a sharp cone in two-dimensional shear flow increase downstream relative to conical flow values. (Modified author abstract).
Author: Michael C. Frieders
Publisher:
ISBN:
Category :
Languages : en
Pages : 131
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Book Description
Methods have been developed to solve the problem of laminar boundary layers on sharp and spherically blunt cones at angle of attack to nonuniform supersonic free streams. A three-dimensional boundary-layer solution is used to solve sharp cone problems and the afterbody of blunt cone problems. An axisymmetric boundary-layer solution is used to solve the axisymmetric region of blunt cones. An existing implicit finite-difference numerical scheme was used to solve both the axisymmetric and three-dimensional boundary-layer equations. A modified inverse method for solving the inviscid flow field is used to provide edge properties for the axisymmetric region of blunt cones. Normalized skin friction and heat transfer coefficients for a sharp cone in two-dimensional shear flow increase downstream relative to conical flow values. (Modified author abstract).
Author: Michael C. Frieders
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: Michael C. Frieders
Publisher:
ISBN:
Category :
Languages : en
Pages : 169
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Book Description
Two fortran computer programs have been developed to solve the problem of laminar boundary layers on sharp and blunt cones at angle of attack to nonuniform free streams. An existing three-dimensional boundary layer program was modified to introduce nonuniform edge properties to the boundary layer on a sharp cone. A combination of axisymmetric and three-dimensional boundary layer programs was modified to solve the boundary layer on a blunt cone in nonuniform streams. The inviscid flow fields over blunt cones are predicted from blunt body and three-dimensional method of characteristics solutions. Conical flow field solutions are used over sharp cones in uniform streams, and three-dimensional method of characteristics solutions are used over sharp cones in nonuniform streams. (Modified author abstract).
Author: Michael C. Frieders
Publisher:
ISBN:
Category :
Languages : en
Pages : 258
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Book Description
Author: Wilbur L. Hankey
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 20
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Book Description
This report reviews the progress over the last decade on separated flows conducted at these laboratories. Experimental investigations conducted in the hypersonic wind tunnels is discussed. Advancements are summarized in the theoretical area which cover the development of interacting boundary layers to the numerical computation of the complete Navier-Stokes equations.
Author: Roie R. Balck
Publisher:
ISBN:
Category :
Languages : en
Pages : 145
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Book Description
A system of six computer programs which may be arranged into several program packages for the purpose of solving inviscid flow fields over sharp and spherically blunted cones at angle of attack in both uniform and nonuniform supersonic free streams has been developed. These programs are written in standard FORTRAN 4 and are currently being run on the Virginia Polytechnic Inst. and State University IBM 370/155 computer. The six programs include a modified inverse blunt body solution program, a modified axisymmetric method of characteristics program, a modified three-dimensional method of characteristics program, two sharp cone zero and nonzero angle of attack uniform flow solution programs, and a master data input control program which reads input data and passes information to the other programs. (Modified author abstract).
Author: R. R. Black
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 7
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Book Description
A system of computer programs has been developed to predict supersonic inviscid and viscous nonuniform flow fields over sharp and spherically blunted cones at angle of attack. For blunt cones the flow fields considered were axisymmetric wake flows positioned such that the flow in the subsonic nose region remained axisymmetric. For sharp cones, both axisymmetric wake flows and two-dimensional shear flows were considered. The programs used in solving inviscid flow fields incorporate a modified inverse method for solving subsonic flow regions and modified axisymmetric and three-dimensional method of characteristics procedures for solving the supersonic flow regions. Body properties predicted by the inviscid solutions were used as edge data for solution of the corresponding laminar boundary layer over the bodies.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 960
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Book Description
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.
Author: Roie R. Black
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 0
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Book Description
A system of six computer programs which may be arranged into several program packages for the purpose of solving inviscid flow fields over sharp and spherically blunted cones at angle of attack in both uniform and nonuniform supersonic free streams has been developed. These programs are written in standard FORTRAN 4 and are currently being run on the Virginia Polytechnic Inst. and State University IBM 370/155 computer. The six programs include a modified inverse blunt body solution program, a modified axisymmetric method of characteristics program, a modified three-dimensional method of characteristics program, two sharp cone zero and nonzero angle of attack uniform flow solution programs, and a master data input control program which reads input data and passes information to the other programs. (Modified author abstract).
Author: Roie R. Black
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
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Book Description
A system of computer programs was developed to solve supersonic inviscid nonuniform flows over sharp and spherically blunted cones at angles of attack. For blunt cones the flow fields considered were axisymmetric wake flows situated so that flow in the subsonic nose region remained axisymmetric. For sharp cones both axisymmetric wake flows and two-dimensional shear flows were considered. The programs incorporate a modified inverse method for solving subsonic flow regions and modified axisymmetric and three-dimensional method of characteristics procedures for solving supersonic flow regions. (Modified author abstract).
