{"project":{"acronym":"","projectId":33401,"title":"Compact Kinetic Mechanisms for Petroleum-Derived and Alternative Aviation Fuels","primaryTaxonomyNodes":[{"taxonomyNodeId":10559,"taxonomyRootId":8816,"parentNodeId":10547,"level":3,"code":"TX01.3.12","title":"Alternative Low Carbon Jet Fuel","definition":"Alternative jet fuels have lower carbon emissions than conventional petroleum-based fuels over the entire life cycle of the fuels.","exampleTechnologies":"Biojet fuels, hydrogen based fuels","hasChildren":false,"hasInteriorContent":true}],"startTrl":3,"currentTrl":5,"endTrl":5,"benefits":"
The Technical Objectives presented in this Phase I proposal directly address a topic in the NASA SBIR solicitation for low emissions/clean power aircraft combustors. The \"compact\" low-dimensional chemical kinetic mechanisms proposed for modeling of real aviation fuel combustion chemistry will support physics-based CFD development of next-generation engines such as those employing lean direct injection (LDI) technology. Reacting flow simulation platforms like NASA's National Combustion Code (NCC), as well as ANSYS, KIVA, and OpenFOAM, require mechanisms sufficiently compact so as to be tractable for multi-dimensional, multi-physics, CFD simulations, but which also preserve the predictive fidelity of more detailed kinetic mechanisms. Importantly, the present framework permits the consideration of a variety of real fuels, including alternative fuels derived from a variety of non-petroleum resources. Evaluation of such alternative fuels is among the major NASA research thrusts under the general topic of propulsion.
The commercial product foreseen from this SBIR program is a stand-alone, novice-friendly real fuel kinetic mechanism generator software package that can interface with commercially-available computational fluid dynamics (CFD) codes. Accordingly, potential customers may include the companies supplying ANSYS, CFD-ACE+, or COMSOL, as well as industrial users with proprietary in-house codes. Application of compact real fuel kinetic models has broad appeal to automotive, aerospace, and marine propulsion industries, both for civilian and DoD applications.
To be useful for computational combustor design and analysis using tools like the National Combustion Code (NCC), low-dimensional chemical kinetic mechanisms for modeling of real fuel combustion chemistry must be sufficiently compact so that they can be utilized in multi-dimensional, multi-physics, reacting computational fluid dynamics (CFD) simulations. Despite advances in CFD-appropriate kinetic mechanism reduction for kerosene-range fuels, significant combustion property variation among current and prospective certified fuels remains a challenge for meaningful CFD-advised design of high pressure, low-emissions combustors. The proposed project will leverage Princeton's ongoing work in aviation fuel surrogate formulation and modeling as well as kinetic mechanism development for emissions and high pressure combustion to produce and demonstrate a meta-model framework for automated generation of fuel-flexible compact chemical kinetic mechanisms appropriate for 3-D combustion CFD codes. During Phase I, Compact Mechanisms for both an alternative, natural-gas derived synthetic kerosene and a conventional petro-derived Jet A kerosene have been developed and demonstrated. Results indicated that, over a very broad range of pressures, temperatures, equivalence ratios, and characteristic times, these Compact Mechanisms well reproduce predictions of global combustion behaviors (ignition, extinction, heat release rate, pollutant mole fractions) relative to predictions of significantly larger target chemical kinetic mechanisms. Technical objectives for Phase II R&D include development of a stand-alone software application for generation of tailor-made, fuel-specific Compact Mechanisms, and demonstration of Compact Mechanism performance in computation-intensive CFD applications. Achievement of these objectives together will advance the current state of this R&D program to TRL 5.
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The \"compact\" low-dimensional chemical kinetic mechanisms proposed for modeling of real aviation fuel combustion chemistry will support physics-based CFD development of next-generation engines such as those employing lean direct injection (LDI) technology. Reacting flow simulation platforms like NASA's National Combustion Code (NCC), as well as ANSYS, KIVA, and OpenFOAM, require mechanisms sufficiently compact so as to be tractable for multi-dimensional, multi-physics, CFD simulations, but which also preserve the predictive fidelity of more detailed kinetic mechanisms. Importantly, the present framework permits the consideration of a variety of real fuels, including alternative fuels derived from a variety of non-petroleum resources. Evaluation of such alternative fuels is among the major NASA research thrusts under the general topic of propulsion.The NASA SBIR and STTR programs fund the research, development, and demonstration of innovative technologies that fulfill NASA needs as described in the annual Solicitations and have significant potential for successful commercialization. If you are a small business concern (SBC) with 500 or fewer employees or a non-profit RI such as a university or a research laboratory with ties to an SBC, then NASA encourages you to learn more about the SBIR and STTR programs as a potential source of seed funding for the development of your innovations.
The SBIR and STTR programs have 3 phases:
The SBIR and STTR Phase I contracts last for 6 months with a maximum funding of $125,000, and Phase II contracts last for 24 months with a maximum funding of $750,000 - $1.5 million.
Opportunity for Continued Technology Development Post-Phase II:
The NASA SBIR/STTR Program currently has in place two initiatives for supporting its small business partners past the basic Phase I and Phase II elements of the program that emphasize opportunities for commercialization. Specifically, the NASA SBIR/STTR Program has the Phase II Enhancement (Phase II-E) and Phase II eXpanded (Phase II-X) contract options.
Please review the links below to obtain more information on the SBIR/STTR programs.
Provides an overview of the SBIR and STTR programs as implemented by NASA
Provides access to the annual SBIR/STTR Solicitations containing detailed information on the program eligibility requirements, proposal instructions and research topics and subtopics
Schedule and links for the SBIR/STTR solicitations and selection announcements
Federal and non-Federal sources of assistance for small business
Search our complete archive of awarded project abstracts to learn about what NASA has funded
Still have questions? Visit the program FAQs
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The SBIR and STTR programs have 3 phases:
The SBIR and STTR Phase I contracts last for 6 months with a maximum funding of $125,000, and Phase II contracts last for 24 months with a maximum funding of $750,000 - $1.5 million.
Opportunity for Continued Technology Development Post-Phase II:
The NASA SBIR/STTR Program currently has in place two initiatives for supporting its small business partners past the basic Phase I and Phase II elements of the program that emphasize opportunities for commercialization. Specifically, the NASA SBIR/STTR Program has the Phase II Enhancement (Phase II-E) and Phase II eXpanded (Phase II-X) contract options.
Please review the links below to obtain more information on the SBIR/STTR programs.
Provides an overview of the SBIR and STTR programs as implemented by NASA
Provides access to the annual SBIR/STTR Solicitations containing detailed information on the program eligibility requirements, proposal instructions and research topics and subtopics
Schedule and links for the SBIR/STTR solicitations and selection announcements
Federal and non-Federal sources of assistance for small business
Search our complete archive of awarded project abstracts to learn about what NASA has funded
Still have questions? Visit the program FAQs
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