NEARLY FREE MOLECULAR FLOW. A COMPARISON OF THEORY AND EXPERIMENT

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Abstract:

Measured drag coefficients for cylinders, normal strips and spheres in nearly free-molecular flow at M 6, 8 and 10 are correlated with a collision-rate parameter suggested by the modified Krook model, and compared with theoretical estimates based on a variety of kinetic models and methods of analysis. The comparison of theory and experiment and the comparative effectiveness of various rarefaction parameters are discussed, and suggestions for further experimentation are made.

Author(s):
Sherman, F. S. ; Willis, D. R. ; Maslach, G. J.
Author Organization(s):
CALIFORNIA UNIV BERKELEY INST OF ENGINEERING RESEARCH
Supplementary Note:
Presented at 11th International Congress for Applied Mechanics, 30 Aug-5 Sep 1964, Munich, Germany.
Pagination:
0029

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited. Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AS-64-16
Contract/Grant Number(s):
NONR-222-45
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_1.2.7_Experimentation; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_1.2.3_Educating; JCA_5_Command and Control; JCA_4.6_Engineering; JCA_5.3_Planning; JCA_6.4.1_Secure Information Exchange; JCA_6_Net Centric
Modernization Areas:
Hypersonics
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*RAREFIED GAS DYNAMICS, BLUNT BODIES, CORRELATION TECHNIQUES, CYLINDRICAL BODIES, DRAG, EXPERIMENTAL DATA, GAS FLOW, HYPERSONIC FLOW, ITERATIONS, KINETIC THEORY, MATHEMATICAL ANALYSIS, MATHEMATICAL MODELS, MODEL TESTS, SPHERES, WIND TUNNEL MODELS
Field(s)/Group(s):
Fluid Mechanics
Report Date:
1964 Oct 15