Author: J. Leith Potter
Publisher:
ISBN:
Category : Air flow
Languages : en
Pages : 26
Book Description
Measurements of average heat-transfer rates to blunt-nosed, axisymmetric, cold-walled bodies in a low-density, hypervelocity wind tunnel are given. Stream density was such that Reynolds and Knudsen numbers, based on nose radius and conditions immediately behind the bow shock, varied from 5 to 20 and 0.11 to 0.056, respectively. Thus, scaling on the basis of Knudsen number, these conditions may be said to simulate a body of one-foot nose radius at as much as 315,500-ft altitude. Heat-transfer rates are discussed in relation to the flow model successfully used in the past for studies of flows of high Reynolds number. In this context, it was found that measured heat-transfer rates to hemispheres below shock-layer Reynolds numbers of 20 exhibited a decreasing nondimensionalized rate relative to that estimated by methods appropriate to high Reynolds number conditions. This behavior is in accord with various applicable theories. Rates for the flat-faced bodies showed no tendency to decrease, and they were somewhat higher than predicted by theories for high Reynolds numbers.
Experimental Heat Transfer to Blunt Axisymmetric Bodies Near the Limit of Continuum Flow
Author: J. Leith Potter
Publisher:
ISBN:
Category : Air flow
Languages : en
Pages : 26
Book Description
Measurements of average heat-transfer rates to blunt-nosed, axisymmetric, cold-walled bodies in a low-density, hypervelocity wind tunnel are given. Stream density was such that Reynolds and Knudsen numbers, based on nose radius and conditions immediately behind the bow shock, varied from 5 to 20 and 0.11 to 0.056, respectively. Thus, scaling on the basis of Knudsen number, these conditions may be said to simulate a body of one-foot nose radius at as much as 315,500-ft altitude. Heat-transfer rates are discussed in relation to the flow model successfully used in the past for studies of flows of high Reynolds number. In this context, it was found that measured heat-transfer rates to hemispheres below shock-layer Reynolds numbers of 20 exhibited a decreasing nondimensionalized rate relative to that estimated by methods appropriate to high Reynolds number conditions. This behavior is in accord with various applicable theories. Rates for the flat-faced bodies showed no tendency to decrease, and they were somewhat higher than predicted by theories for high Reynolds numbers.
Publisher:
ISBN:
Category : Air flow
Languages : en
Pages : 26
Book Description
Measurements of average heat-transfer rates to blunt-nosed, axisymmetric, cold-walled bodies in a low-density, hypervelocity wind tunnel are given. Stream density was such that Reynolds and Knudsen numbers, based on nose radius and conditions immediately behind the bow shock, varied from 5 to 20 and 0.11 to 0.056, respectively. Thus, scaling on the basis of Knudsen number, these conditions may be said to simulate a body of one-foot nose radius at as much as 315,500-ft altitude. Heat-transfer rates are discussed in relation to the flow model successfully used in the past for studies of flows of high Reynolds number. In this context, it was found that measured heat-transfer rates to hemispheres below shock-layer Reynolds numbers of 20 exhibited a decreasing nondimensionalized rate relative to that estimated by methods appropriate to high Reynolds number conditions. This behavior is in accord with various applicable theories. Rates for the flat-faced bodies showed no tendency to decrease, and they were somewhat higher than predicted by theories for high Reynolds numbers.
Forebody and Afterbody Solutions of the Navier-Stokes Equations for Supersonic Flow Over Blunt Bodies in a Generalized Orthogonal Coordinate System
Author: Peter A. Gnoffo
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 100
Book Description
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 100
Book Description
Effects of Mass Addition on Blunt-body Boundary-layer Transition and Heat Transfer
Author: George E. Kaattari
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 76
Book Description
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 76
Book Description
U.S. Government Research Reports
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1170
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1170
Book Description
An Experimental Investigation of Heat Transfer Rates on a Blunt Body in Hypersonic Flow
Author: Homer K. Richards
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 66
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 66
Book Description
Technical Publications Announcements with Indexes
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1556
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1556
Book Description
NASA Technical Paper
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 100
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 100
Book Description
Experimental and Numerical Study of Heat Transfer on a Blunt Body in Dusty Hypersonic Flow
Author: E. B. Vasilevskii
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 836
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 836
Book Description
Applied Mechanics Reviews
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 654
Book Description
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 654
Book Description