Modeling Unsteady Cavitation Effects and Dynamic Loads in Cryogenic Systems, Phase I

Metadata Updated: May 2, 2019

There currently are no analytical or CFD tools that can reliably predict unsteady cavitation dynamics in liquid rocket cryogenic systems. Analysis of cavitating cryogenic systems presents a challenge, and is poorly understood, because the phase change process couples with the temperature fluctuations in the fluid. In particular when large scale flow unsteadiness is present at low-flow, off-design conditions, this coupling can lead to significant enhancement of vaporization and possibly lead to cavitation instabilities. These large amplitude, dynamic loads can interact with other system components and cause severe damage. The innovation proposed here is the development of an unsteady numerical framework that can predict amplitudes and frequencies of dynamic pressure loads in cryogenic fluids. This innovation will address the inclusion of advanced unsteady cavitation models, validation for pressure fluctuations in cryogenic fluids, and development of unsteady boundary conditions for coupling the turbopump to other system components. An experimental program will be set up in the Phase II effort to obtain unsteady flow data for code validation. The resulting product, a specialized version of the multi-element unstructured CRUNCH CFD code, will be a well-validated and reliable analysis tool that can be used to predict unsteady, off-design performance of liquid rocket turbopumps.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Dates

Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_5380
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id e3d2ba1a-5b16-42ed-8ae4-68ce7c49df09
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2004-07-01
Homepage URL https://techport.nasa.gov/view/5380
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash ced9338c82209be6d9afd0c90ebc040f8129b1a1
Source Schema Version 1.1

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