Second-Order Shock-Expansion Theory Extended to Include Real Gas Effects

reportActive / Technical Report | Accession Number: ADA247191 | Open PDF

Abstract:

New methods have been developed to compute inviscid surface pressures and temperatures for both perfect and equilibrium chemically reacting flows on both pointed and blunt bodies of revolution. These new methods include an improved Shock-expansion Theory, an improved Modified Newtonian Theory MNT, and an improved method for angle-of-attack effects. Comparison of these approximate engineering techniques to exact inviscid computations using a full Euler code showed that these new methods gave very good agreement of surface temperature and pressures as well as forces and moments. Incorporation of this new technology into the NAVSWC aeroprediction code will allow the code to be used for engineering estimates of inviscid surface temperature at high Mach numbers. These approximate temperatures can then be used as inputs to perform heat transfer analysis. Second-order Shock-expansion, Perfect and Real Gases, Modified Newtonian Theory, Chemical Species Composition.

Author(s):
Moore, Frank G. ; Armistead, Michael A. ; Rowles, Steve H. ; Dejarnette, Fred R.
Author Organization(s):
NAVAL SURFACE WARFARE CENTER DAHLGREN VA
Descriptive Note:
Final rept.
Pagination:
0176

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NAVSWC-TR-90-683
Monitor Series:
ONT
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_7_Protection; JCA_1_Force Support; JCA_1.1_Force Management; JCA_5_Command and Control; JCA_5.3_Planning; JCA_4.6_Engineering; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support; JCA_1.2_Force Preparation; JCA_5.2_Understand; JCA_1.2.3_Educating; JCA_6.4.1_Secure Information Exchange; JCA_6_Net Centric; JCA_1.3_Human Capital Management; JCA_1.3.2_Personnel Management; JCA_4.1_Deployment and Distribution
Modernization Areas:
Hypersonics; Quantum Science and Computing
Communities of Interest:
Weapons Technologies
Descriptor(s):
*COMPUTATIONS, *SHOCK WAVES, *PRESSURE, *AERODYNAMICS, *SURFACE TEMPERATURE, HEAT TRANSFER, ANGLES, THEORY, MOMENTS, GASES, SURFACES, SHOCK, BODIES OF REVOLUTION, BLUNT BODIES, BODIES, NUMBERS, HEAT, AGREEMENTS, TRANSFER, FLOW, EXPANSION, ENGINEERING, ESTIMATES, ANGLE OF ATTACK, ATTACK, COMPARISON, CHEMICALS, TEMPERATURE
Field(s)/Group(s):
Aerodynamics, Theoretical Mathematics, Fluid Mechanics
Keyword(s):
SHOCK EXPANSION THEORY, MODIFIED NEWTONIAN THEORY, INVISCID SURFACE TEMPERATURE
Report Date:
1992 Feb 01