Uncertainty Quantification in Aerodynamics Simulations

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,900.00
Award Year:
2010
Program:
SBIR
Phase:
Phase I
Contract:
NNX10CE80P
Award Id:
95538
Agency Tracking Number:
094269
Solicitation Year:
n/a
Solicitation Topic Code:
A2
Solicitation Number:
n/a
Small Business Information
3819 Sunnycroft Place, West Lafayette, IN, 47906
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
806890807
Principal Investigator:
John Chai
Principal Investigator
(512) 418-6125
jc@jabirusoft.com
Business Contact:
Sanjay Mathur
Business Official
(765) 413-9203
sm@jabirusoft.com
Research Institution:
n/a
Abstract
The objective of the proposed work (Phases I and II) is to develop uncertainty quantification methodologies and software suitable for use in CFD simulations of aerodynamic flows, ranging from sub-sonic to hypersonic. We will address both pressure and density-based methods, as well as the class of algorithms addressing all-Mach number flows. The software developed here will be based on an existing unstructured finite volume CFD solver, TETHYS, which has been developed by Jabiru Software and Services. A central focus of the proposal is the development and evaluation of generalized polynomial chaos (gPC) methodologies for uncertainty propagation. In Phase I, we will develop non-intrusive sparse-grid based adaptive collocation techniques for all-speed flows to address the curse of dimensionality and to resolve discontinuities and non-linearities in random space. We will evaluate the feasibility of implementing stochastic Galerkin techniques non-intrusively through operator overloading. Phase I will address airfoil flow across the range of Mach numbers. Phase II will address more general implementations of feasible approaches, application to more complex aerodynamics simulations, as well as implementation on parallel platforms.

* information listed above is at the time of submission.

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