NASA STTR 2012 Solicitation


PROPOSAL NUMBER: 12-1 T4.03-9945
RESEARCH SUBTOPIC TITLE: Extreme Particle Flow Physics Simulation Capability
PROPOSAL TITLE: Particle Flow Physics Modeling for Extreme Environments

NAME: CFD Research Corporation NAME: University of Florida
STREET: 215 Wynn Drive, 5th Floor STREET: P.O. Box 116550 (339) Weil Hall
CITY: Huntsville CITY: Gainsville
STATE/ZIP: AL  35805 - 1926 STATE/ZIP: FL  32611 - 6550
PHONE: (256) 726-4800 PHONE: (352) 392-9448

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Peter Liever
215 Wynn Drive, 5th Floor
Huntsville, AL 35805 - 1926
(256) 726-4930

CORPORATE/BUSINESS OFFICIAL (Name, E-mail, Mail Address, City/State/Zip, Phone)
Silvia Harvey
215 Wynn Drive, 5th Floor
Huntsville, AL 35805 - 1926
(256) 726-4858

Estimated Technology Readiness Level (TRL) at beginning and end of contract:
Begin: 4
End: 6

Technology Available (TAV) Subtopics
Extreme Particle Flow Physics Simulation Capability is a Technology Available (TAV) subtopic that includes NASA Intellectual Property (IP). Do you plan to use the NASA IP under the award?

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
The liberation of particles induced by rocket plume flow from spacecraft landing on unprepared regolith of the Moon, Mars, and other destinations poses high mission risks for robotic and human exploration activities. This process occurs in a combination of "extreme environments" that combine low gravity, little or no atmosphere, with rocket exhaust gas flow that is supersonic and partially rarefied, and unusual geological and mechanical properties of highly irregular soil regolith. CFDRC and the University of Florida have previously developed unique plume driven erosion simulation software for such environments by combining novel granular physics simulation modules developed by UF with the Unified Flow Solver (UFS) plume flow simulation software developed by CFDRC. Granular flow constitutive models, formulated through first-principle 3-D Discrete Element Method particle kinetics simulations, were implemented for efficient Eulerian gas-granular flow CFD modeling in the UFS simulation framework. Resultant simulations realistically capture the granular flow characteristics of particle erosion and cratering scenarios. The goal of this project is to dramatically advance the fidelity of these simulations towards simulating actual extra-terrestrial soil compositions with broad shape and size variations. This will be achieved through applying recent, novel particle kinetics modeling concepts to formulate granular flow physics models for both, realistic irregular particle shapes and realistically dispersed particle size distributions. The proposed technology development will result in unprecedented computer modeling capability for predicting liberation and flow of realistic granular material compositions in extreme extra-terrestrial environments.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
The debris simulation tool will offer a powerful simulation capability of first order importance to the Space Exploration Program for robotic and human mission architecture definition to the Moon, Mars, and other destinations. The highest risks occurring during propulsive landing and takeoff of spacecraft require gas-granular flow simulation capabilities for designing mitigation measures. The granular flow modeling capability will be equally important for modeling regolith material manipulation for In-situ Resource Utilization such as pneumatic transport, granular flow movement in excavators, resource extraction systems moving and conveying planetary regolith, as well as processing of regolith in reactors for resource extraction.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Many potential non-NASA commercial applications exist in civil and military industries. Dust, sand and snow stir-up during helicopter landing and take-off in a desert or arctic environment result in severe visibility impairment (brown-out) and danger of debris ingestion. Civil engineering and environmental engineering applications include wind-borne landscape erosion and dust transport to populated areas

TECHNOLOGY TAXONOMY MAPPING (NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.)
Analytical Methods
Entry, Descent, & Landing (see also Planetary Navigation, Tracking, & Telemetry)
Models & Simulations (see also Testing & Evaluation)
Software Tools (Analysis, Design)

Form Generated on 03-28-13 15:21