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  • 1
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    Experimental fluid dynamics. Part 1: Brief overview. Part 2: Flow modeling and verification experiments: RFE (1987)
    In:  CASI
    Details
    Publication Date: 2006-06-13
    Description: The role of experiment in Computational Fluid Dynamics (CFD) is discussed. Flow modeling of complex physics and determination of accuracy limits (confidence) are two ways in which experimentation can be used to develop CFD. The results of this discussion are presented in viewgraph form.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA CFD Validation Workshop; p 56-77
    Format: text
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  • 2
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    A CFD validation roadmap for hypersonic flows (1993)
    In:  CASI
    Details
    Publication Date: 2017-10-02
    Description: A roadmap for computational fluid dynamics (CFD) code validation is developed. The elements of the roadmap are consistent with air-breathing vehicle design requirements and related to the important flow path components: forebody, inlet, combustor, and nozzle. Building block and benchmark validation experiments are identified along with their test conditions and measurements. Based on an evaluation criteria, recommendations for an initial CFD validation data base are given and gaps identified where future experiments would provide the needed validation data.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: AGARD, Theoretical and Experimental Methods in Hypersonic Flows; 16 p
    Format: text
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  • 3
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    Turbulence Modeling: Progress and Future Outlook (1996)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Progress in the development of the hierarchy of turbulence models for Reynolds-averaged Navier-Stokes codes used in aerodynamic applications is reviewed. Steady progress is demonstrated, but transfer of the modeling technology has not kept pace with the development and demands of the computational fluid dynamics (CFD) tools. An examination of the process of model development leads to recommendations for a mid-course correction involving close coordination between modelers, CFD developers, and application engineers. In instances where the old process is changed and cooperation enhanced, timely transfer is realized. A turbulence modeling information database is proposed to refine the process and open it to greater participation among modeling and CFD practitioners.
    Keywords: Fluid Mechanics and Heat Transfer
    Type: NASA-TM-110414 , A-962417 , NAS 1.15:110414
    Format: application/pdf
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  • 4
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    Wind tunnel requirements for computational fluid dynamics code verification (1987)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The role of experiment in the development of Computational Fluid Dynamics (CFD) for aerodynamic flow field prediction is discussed. Requirements for code verification from two sources that pace the development of CFD are described for: (1) development of adequate flow modeling, and (2) establishment of confidence in the use of CFD to predict complex flows. The types of data needed and their accuracy differs in detail and scope and leads to definite wind tunnel requirements. Examples of testing to assess and develop turbulence models, and to verify code development, are used to establish future wind tunnel testing requirements. Versatility, appropriate scale and speed range, accessibility for nonintrusive instrumentation, computerized data systems, and dedicated use for verification were among the more important requirements identified.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-TM-100001 , A-87261 , NAS 1.15:100001
    Format: application/pdf
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  • 5
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    Accuracy requirements and benchmark experiments for CFD validation (1988)
    In:  CASI
    Details
    Publication Date: 2017-10-02
    Description: The role of experiment in the development of Computational Fluid Dynamics (CFD) for aerodynamic flow prediction is discussed. The CFD verification is a concept that depends on closely coordinated planning between computational and experimental disciplines. Because code applications are becoming more complex and their potential for design more feasible, it no longer suffices to use experimental data from surface or integral measurements alone to provide the required verification. Flow physics and modeling, flow field, and boundary condition measurements are emerging as critical data. Four types of experiments are introduced and examples are given that meet the challenge of validation: flow physics experiments; flow modeling experiments; calibration experiments; and verification experiments. Measurement and accuracy requirements for each of these differ and are discussed. A comprehensive program of validation is described, some examples given, and it is concluded that the future prospects are encouraging.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: AGARD, Validation of Computational Fluid Dynamics. Volume 1: Symposium Papers and Round Table Discussion; 15 p
    Format: text
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  • 6
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    Wind tunnel requirements for computational fluid dynamics code verification (1988)
    In:  CASI
    Details
    Publication Date: 2017-10-02
    Description: The role of experiment in the development of computational fluid dynamics (CFD) for aerodynamic flow field prediction is discussed. Requirements for code verification from two sources that pace the development of CFD are described for: (1) development of adequate flow modeling, and (2) establishment of confidence in the use of CFD to predict complex flows. The types of data needed and their accuracy differs in detail and scope and leads to definite wind tunnel requirements. Examples of testing to assess and develop turbulence models, and to verify code development, are used to establish future wind tunnel testing requirements. Versatility, appropriate scale and speed range, accessibility for nonintrusive instrumentation, computerized data systems, and dedicated use for verification were among the more important requirements identified.
    Keywords: RESEARCH AND SUPPORT FACILITIES (AIR)
    Type: AGARD, Aerodynamic Data Accuracy and Quality: Requirements and Capabilities in Wind Tunnel Testing; 13 p
    Format: text
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  • 7
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    CFD validation experiments for hypersonic flows (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: A roadmap for CFD code validation is introduced. The elements of the roadmap are consistent with air-breathing vehicle design requirements and related to the important flow path components: forebody, inlet, combustor, and nozzle. Building block and benchmark validation experiments are identified along with their test conditions and measurements. Based on an evaluation criteria, recommendations for an initial CFD validation data base are given and gaps identified where future experiments could provide new validation data.
    Keywords: AERODYNAMICS
    Type: AIAA PAPER 92-4024
    Format: text
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  • 8
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    Accuracy requirements and benchmark experiments for CFD validation (1988)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The role of experiment in the development of Computation Fluid Dynamics (CFD) for aerodynamic flow prediction is discussed. The CFD verification is a concept that depends on closely coordinated planning between computational and experimental disciplines. Because code applications are becoming more complex and their potential for design more feasible, it no longer suffices to use experimental data from surface or integral measurements alone to provide the required verification. Flow physics and modeling, flow field, and boundary condition measurements are emerging as critical data. Four types of experiments are introduced and examples given that meet the challenge of validation: flow physics experiments; flow modeling experiments; calibration experiments; and verification experiments. Measurement and accuracy requirements for each of these differ and are discussed. A comprehensive program of validation is described, some examples given, and it is concluded that the future prospects are encouraging.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-TM-100087 , A-88123 , NAS 1.15:100087
    Format: application/pdf
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  • 9
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    Dryden lectureship in research, a perspective on CFD validation (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A comprehensive approach to CFD validation is presented. Requirements from computational and experimental perspectives are given. Experimental validation is emphasized because it ultimately determines the accuracy of CFD modeling and its application to complex problems. The concepts of building block and benchmark experiments are introduced. The types of measurements required of these experiments and their accuracy determination are explained. Contributions from such experiments toward the development and validation of CFD are reviewed and examples provided. Future challenges and strategies for validation are discussed.
    Keywords: AERODYNAMICS
    Type: AIAA PAPER 93-0002 , ; 13 p.|Jan 11, 1993 - Jan 14, 1993; Reno, NV; United States
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  • 10
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    A CFD validation roadmap for hypersonic flows (1992)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A roadmap for computational fluid dynamics (CFD) code validation is developed. The elements of the roadmap are consistent with air-breathing vehicle design requirements and related to the important flow path components: forebody, inlet, combustor, and nozzle. Building block and benchmark validation experiments are identified along with their test conditions and measurements. Based on an evaluation criteria, recommendations for an initial CFD validation data base are given and gaps identified where future experiments would provide the needed validation data.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-TM-103935 , A-92091 , NAS 1.15:103935 , Fluid Dynamics Panel Meeting and Symposium on Theoretical and Experimental Methods in Hypersonic Flows; May 04, 1992 - May 08, 1992; Torino; Italy
    Format: application/pdf
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