Weatherly, David C*

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Jun 09, 2024
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Bearings and Seals Laboratory, Mechanical Engineering Dept., University of Kentucky, Computational Research Project on the DLX Cluster for 2014

Thermo-fluidic Modeling

Description: The project aims to improve and validate a Fluent model of a subsystem in an appliance.


Grant Sponsor

Sponsor: General Electric Appliances & Lighting
Funding: $179,000

PI, Students, and Staff

Principal Investigator: Dr. David Weatherly (ME Research Associate)
Co-PI’s: Prof. L. Scott Stephens (Chair, ME Dept.), Prof. Sean Bailey (ME Dept.)
Students: 1 Graduate Assistant to be named

Software:

The programs to be used are elements of the Ansys suite of tools DesignModeler, Fluent, Extended Meshing.

Bearings and Seals Laboratory, Mechanical Engineering Dept., University of Kentucky - Computational Research Project on the DLX Cluster as of 11/20/2013

Radial Lip Seal Performance Simulation

Description: The project analyzes the modeling of radial lip seal performance versus experimental results. The problem is a fluid-structure interaction problem featuring an oil film about 1-2 um thick between a rotating steel shaft and a stationary elastomeric seal. The computational domain is a 2-D rectangle of the fluid between the shaft and elastomer. The problem is formulated with finite difference approximations. The project treats both steady state and time-dependent cases. The main difficulties are proper modeling of the physics (including gaseous cavitation) and achieving convergence of the fluid-structure coupling iterations in a practical time.

Software:

Fortran for the fluid-structural interaction problem and Matlab, MSC Marc, LS-Dyna, and Ansys which are used for processing inputs.


PI, Students, Staff

Principal Investigator: Prof. L. Scott Stephens (Chair, ME Dept.)
Project Personnel: Prof. Jonathan Wenk (ME Faculty), Dr. David Weatherly (Research Staff), Li Wei (PhD Student), Philip Hadinata (PhD Student), Daniel Impellizerri (MS Student), Katherine Warren (PhD Student).

Collaborators



Publications

  1. “Experimental Benchmarking of Surface Textured Lip Seal Models, Ph.D. dissertation. Dr. Wei Li, University of Kentucky, 2012.
  2. “Experimental Benchmarking of the Numerical Model of a Radial Lip Seal with a Surface Textured Shaft”, Wei Li, Lyndon S. Stephens, Jonathan Wenk; Tribology Transactions, 56: 75-87, 2013.
  3. “Model Development And Investigation Of Micro-Deterministic Asperity Features/Textures Using The Jakobsson-Floberg-Olsson (JFO) Cavitation Condition Modified Reynolds Equation”, Masters’ Thesis, Daniel Impellizzeri, University Of Kentucky, 2006
  4. “Soft elastohydrodynamic analysis of radial lip seal with deterministic microasperities on the shaft”, Phillip C. Hadinata, Lyndon S. Stephens, STLE/ASME international Joint Tribology Conference, IJTC 2006, Oct. 2006; American Society of Mechanical Engineers
  5. “Modeling issues associated with a lip seal operating on a textured shaft”, Wei Li, Lyndon S. Stephens, ASME Turbo Expo 2010, June 2010, American Society of Mechanical Engineers
  6. “Soft elastohydrodynamic analysis of radial lip seal with deterministic microasperities on the shaft”, Phillip C. Hadinata, Lyndon S. Stephens, Journal of Tribology, v. 129, no. 4, pp. 851-859, Oct. 2007; American Society of Mechanical Engineers



Grants

  1. Performance Modeling of Radial Lip Seals, The Timken Company, $25,000, PI, Sept 2011-August 2012 Surface Textures for Enhanced Lubrication of Tapered Roller Bearings Using LIGA, Year 6, Army Research Office through a sub-contract from The Timken Company, PI, June 07-June 08, $150,000
  2. Surface Textures for Enhanced Lubrication of Tapered Roller Bearings Using LIGA, Year 5, Army Research Office through a sub-contract from The Timken Company, PI, June 06-Mar 07, $150,000
  3. Fellowship Program in Simulation for Advanced Product Development and Manufacturing, Department of Education, Graduate Assistance in Areas in National Need, Aug 03-Aug-06, Co-PI, Funding: $491,940.
  4. Surface Textures for Enhanced Lubrication of Tapered Roller Bearings Using LIGA, Year 4, Army Research Office through a sub-contract from UC Berkeley, Collaborators: Timken, PI, June 05-May-06, $330,000
  5. Experimental Investigation of Thrust Surfaces with Deterministic Micro Asperities, National Science Foundation, Unsolicited Proposal, June 1, 2003-May 31, 2007, PI, $300,000 (NSF), $10,000 (UK) #Surface Textures for Enhanced Lubrication of Tapered Roller Bearings Using LIGA, Years 1-3, Army Research Office through a sub-contract from UC Berkeley, Collaborators: Timken, Case Western June 02-May 05, PI, $575,000

Center for Computational Sciences