Laboratory Directed Research & Development (FY2021 Annual Report)
This report provides an assessment of the value of the LDRD program to Sandia National Laboratories during fiscal year 2021.
Publications
Chief Research Officer Welcome & Charge
Abstract not provided.
Welcome and Sandia Overview
Abstract not provided.
ESRF Progress resulting from ERP Feedback
Abstract not provided.
NCSU Recruiting Seminar - November 2013
Abstract not provided.
SIERRA thermal/fluid/aero code development activities
Abstract not provided.
Stabilized finite element schemes for compressible flow and coupled aero/thermal ablation capability
Abstract not provided.
SIERRA thermal/fluid/aero code development activities
Abstract not provided.
Mechanics Simulation Capabilities Overview
Abstract not provided.
An Update on the Thermal / Fluids Code Consolidation and SIERRA Framework/Toolkit Effort
Abstract not provided.
Aerothermal Modeling Plans for SIERRA Mechanics
Abstract not provided.
DOE's effort to reduce truck aerodynamic drag through joint experiments and computations
Class 8 tractor-trailers are responsible for 11-12% of the total US consumption of petroleum. Overcoming aero drag represents 65% of energy expenditure at highway speeds. Most of the drag results from pressure differences and reducing highway speeds is very effective. The goal is to reduce aerodynamic drag by 25% which would translate to 12% improved fuel economy or 4,200 million gal/year. Objectives are: (1) In support of DOE's mission, provide guidance to industry in the reduction of aerodynamic drag; (2) To shorten and improve design process, establish a database of experimental, computational, and conceptual design information; (3) Demonstrate new drag-reduction techniques; and (4) Get devices on the road. Some accomplishments are: (1) Concepts developed/tested that exceeded 25% drag reduction goal; (2) Insight and guidelines for drag reduction provided to industry through computations and experiments; (3) Joined with industry in getting devices on the road and providing design concepts through virtual modeling and testing; and (4) International recognition achieved through open documentation and database.
DOE's effort to reduce truck aerodynamic drag : joint experiments and computations lead to smart design
At 70 miles per hour, overcoming aerodynamic drag represents about 65% of the total energy expenditure for a typical heavy truck vehicle. The goal of this US Department of Energy supported consortium is to establish a clear understanding of the drag producing flow phenomena. This is being accomplished through joint experiments and computations, leading to the smart design of drag reducing devices. This paper will describe our objective and approach, provide an overview of our efforts and accomplishments, and discuss our future direction.
13 Results