{"project":{"acronym":"","projectId":18367,"title":"Advanced Simulation Capability for Turbopump Cavitation Dynamics Guided by Experimental Validation","primaryTaxonomyNodes":[{"taxonomyNodeId":10563,"taxonomyRootId":8816,"parentNodeId":10560,"level":3,"code":"TX01.4.3","title":"Nuclear Thermal Propulsion","definition":"Nuclear Thermal Propulsion (NTP) engines use a fission reactor (solid, liquid or gas) in the thrust chamber to heat large mass flow of propellant to extremely high temperatures for high specific impulse at high thrust.","exampleTechnologies":"Solid state NTP, gas and liquid ore NTP","hasChildren":false,"hasInteriorContent":true}],"startTrl":3,"currentTrl":6,"endTrl":6,"benefits":"The outcome of Phase 1 activities will be a powerful CFD-based design and analysis capability to predict turbopump cavitation dynamics in liquid rocket engines relevant to NASA. This tool will have direct impact on development and cost reduction of turbopumps relevant to the SLS in general and Nuclear Thermal Propulsion (NTP) engines in particular. It will enable fast and accurate 3D simulations of turbulent unsteady cavitation in existing or new/modified liquid space propulsion engines including J-2X, RS-68, F-1, etc. to allow detailed insight into the physics of cryogenic cavitation and will potentially facilitate design improvements of turbopumps involving liquid propellants such as LOX, LH2, LCH4, RP1 and RP-2.
The computational tool resulting from this project will have wide-ranging commercial applications. The Hybrid RANS-LES methodology in conjunction with unsteady cavitation models can be used for a wide variety of engineering applications involving unsteady turbulent cavitating flows. This tool will enable fast and accurate simulation for a wide range of cavitating flows in a variety of engineering applications and will lead to Improved analysis of unsteady turbulent cavitating flow fields in industrial turbomachinery, potentially leading to design improvements and cost reductions.","description":"Numerical cavitation modeling capability is critical in the design of liquid rocket engine turbopumps, feed lines, injector manifolds and engine test facilities. Cavitation in turbopumps leads to reduced performance, mechanical vibrations, and component erosion. The Computational Fluid Dynamics (CFD) solver Loci-STREAM–developed by Streamline Numerics–is one of the primary production tools currently used at NASA to simulate turbopumps. With a long term goal of enabling accurate computational modeling of cavitating turbopumps subjected to an array of potential operating conditions, this project is aimed at enhancing the cavitation modeling capability in Loci-STREAM to enable time-accurate simulations involving complex engineering geometries present in turbopumps of relevance to NASA involving cryogenic fluids (LOX, LH2, LCH4, RP-1, RP-2). This will contribute to enhanced performance, reliability and reduced developmental costs of liquid rocket pumps. The project will involve a tightly coupled experimental/computational effort. The experimental simulations will be conducted at the University of Florida in a dedicated experimental facility capable of investigating various cavitation modes covering the entire range of non-cryogenic to cryogenic fluids; the proposed studies will be supported by extensive instrumentation. The cavitation models in Loci-STREAM will be substantively validated via dedicated experimental data directed by the computational and model requirements.","startYear":2014,"startMonth":6,"endYear":2014,"endMonth":12,"statusDescription":"Completed","principalInvestigators":[{"contactId":437737,"canUserEdit":false,"firstName":"Siddharth","lastName":"Thakur","fullName":"Siddharth S Thakur","fullNameInverted":"Thakur, Siddharth S","middleInitial":"S","primaryEmail":"st@snumerics.com","publicEmail":true,"nacontact":false}],"programDirectors":[{"contactId":206378,"canUserEdit":false,"firstName":"Jason","lastName":"Kessler","fullName":"Jason L Kessler","fullNameInverted":"Kessler, Jason L","middleInitial":"L","primaryEmail":"jason.l.kessler@nasa.gov","publicEmail":true,"nacontact":false}],"programExecutives":[{"contactId":215154,"canUserEdit":false,"firstName":"Jennifer","lastName":"Gustetic","fullName":"Jennifer L Gustetic","fullNameInverted":"Gustetic, Jennifer L","middleInitial":"L","primaryEmail":"jennifer.l.gustetic@nasa.gov","publicEmail":true,"nacontact":false}],"programManagers":[{"contactId":62051,"canUserEdit":false,"firstName":"Carlos","lastName":"Torrez","fullName":"Carlos Torrez","fullNameInverted":"Torrez, Carlos","primaryEmail":"carlos.torrez@nasa.gov","publicEmail":true,"nacontact":false}],"projectManagers":[{"contactId":3164693,"canUserEdit":false,"firstName":"Preston","lastName":"Schmauch","fullName":"Preston Schmauch","fullNameInverted":"Schmauch, Preston","primaryEmail":"Preston.B.Schmauch@nasa.gov","publicEmail":true,"nacontact":false},{"contactId":461333,"canUserEdit":false,"firstName":"Theresa","lastName":"Stanley","fullName":"Theresa M Stanley","fullNameInverted":"Stanley, Theresa M","middleInitial":"M","primaryEmail":"theresa.m.stanley@nasa.gov","publicEmail":true,"nacontact":false}],"website":"","libraryItems":[{"caption":"Advanced Simulation Capability for Turbopump Cavitation Dynamics Guided by Experimental Validation, Phase I","file":{"fileExtension":"jpg","fileId":300707,"fileName":"SBIR_2014_1_BC_H2.03-9668","fileSize":104892,"objectId":297245,"objectType":{"lkuCodeId":889,"code":"LIBRARY_ITEMS","description":"Library Items","lkuCodeTypeId":182,"lkuCodeType":{"codeType":"OBJECT_TYPE","description":"Object Type"}},"objectTypeId":889,"fileSizeString":"102.4 KB"},"files":[{"fileExtension":"jpg","fileId":300707,"fileName":"SBIR_2014_1_BC_H2.03-9668","fileSize":104892,"objectId":297245,"objectType":{"lkuCodeId":889,"code":"LIBRARY_ITEMS","description":"Library Items","lkuCodeTypeId":182,"lkuCodeType":{"codeType":"OBJECT_TYPE","description":"Object Type"}},"objectTypeId":889,"fileSizeString":"102.4 KB"}],"id":297245,"title":"Briefing Chart Image","description":"Advanced Simulation Capability for Turbopump Cavitation Dynamics Guided by Experimental Validation, Phase I","libraryItemTypeId":1095,"projectId":18367,"primary":false,"publishedDateString":"","contentType":{"lkuCodeId":1095,"code":"IMAGE","description":"Image","lkuCodeTypeId":341,"lkuCodeType":{"codeType":"LIBRARY_ITEM_TYPE","description":"Library Item Type"}}}],"transitions":[{"transitionId":64774,"projectId":18367,"transitionDate":"2014-12-01","path":"Closed Out","closeoutDocuments":[{"title":"Final Summary Chart","file":{"fileExtension":"pdf","fileId":305079,"fileName":"SBIR_14_1_H2.03-9668","fileSize":102624,"objectId":64774,"objectType":{"lkuCodeId":1841,"code":"TRANSITION_FILES","description":"Transition Files","lkuCodeTypeId":182,"lkuCodeType":{"codeType":"OBJECT_TYPE","description":"Object Type"}},"fileSizeString":"100.2 KB"},"transitionId":64774,"fileId":305079}],"infoText":"Closed out","infoTextExtra":"","dateText":"December 2014"}],"responsibleMd":{"acronym":"STMD","canUserEdit":false,"city":"","external":false,"linkCount":0,"organizationId":4875,"organizationName":"Space Technology Mission Directorate","organizationType":"NASA_Mission_Directorate","naorganization":false,"organizationTypePretty":"NASA Mission Directorate"},"program":{"acronym":"SBIR/STTR","active":true,"description":"
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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