The choice of tools used for injector design is in a transitional phase between exclusive reliance on the empirically based correlations and extensive use of computational fluid dynamics (CFD). Without commitment to a focused effort, completion of this transition is several years away at best. The Next Generation Launch Technology (NGLT) Program goals emphasizing lower costs and increased reliability have produced a need to enable CFD as an injector design tool in a shorter time frame. This is the primary objective of the Staged Combustor Injector Technology Task currently under way at Marshall Space Flight Center (MSFC). The documentation of this effort begins with a very brief status of current injector design tools. MSFC's vision for use of CFD as a tool for combustion devices design is stated and discussed with emphasis on the injector. Long solution turnaround times and questionable accuracy are noted as the primary obstacles to widespread reliance on CFD for injector design. The concept of the Simulation Readiness Level (SRL), comprised of solution fidelity, robustness and accuracy, is introduced and discussed. This quantitative measurement is used to establish the gap between the current state of demonstrated capability and that necessary for regular use in the design process. Current examples of CFD calculations for injector design are presented and evaluated in terms of the SRL. The resultant technology gaps are examples of information used to develop the Combustion Devices CFD Simulation Capability Roadmap. Highlights of the injector portion of the Roadmap process are noted along with key concepts used in its development.


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    Title :

    Using CFD as a Rocket Injector Design Tool: Recent Progress at Marshall Space Flight Center


    Contributors:
    K. Tucker (author) / J. West (author) / R. Williams (author) / J. Lin (author) / M. Rocker (author)

    Publication date :

    2003


    Size :

    48 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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