Scholars

Mast-Childs Chair Professor

Positions:

Faculty Affiliate, Energy Institute, Texas A&M Engineering Experiment Station (TEES), Division of Research
Professor, Mechanical Engineering, College of Engineering

Research Areas:

Tribology--Research, Rotors--Dynamics, Cylinder seals, Gas-lubricated bearings, Bearings (Machinery), Fluid-film bearings, Lubrication and lubricants industry

UN Sustainable Development Goals:

Single Page Bio

Profile Summary

lsanandres@tamu.edu

1 979 862 4744

Co-author Network

Map of Science

Websites

ORCID

0000-0002-9619-3817

UN Sustainable Development Goals:

Research Areas:

Tribology--Research, Rotors--Dynamics, Cylinder seals, Gas-lubricated bearings, Bearings (Machinery), Fluid-film bearings, Lubrication and lubricants industry

overview

Our research focuses on experimentally verified computational film flow models for the prediction of the static and dynamic force response of fluid film bearings; in particular hydrostatic bearings, tilting pad bearings, annular pressure seals, squeeze film dampers, floating ring bearings, gas damper bearings and seals, foil gas bearings and porous-carbon bearings.

education and training

Ph.D. in Mechanical Engineering, Texas A&M University - (College Station, Texas, United States) 1985
M.S. in Mechanical Engineering, University of Pittsburgh - (Pittsburgh, Pennsylvania, United States) 1982
B.S. in Mechanical Engineering, Escuela Politecnica Javeriana del Ecuador - (Quito, Ecuador) 1981

selected publications

Academic Articles229

San Andrs, L., & Alcantar, A. (2023). Effect of a Reduced Oil Flow Rate on the Static and Dynamic Performance of a Tilting Pad Journal Bearing Running in Both the Flooded and Evacuated Conditions. Journal of Engineering for Gas Turbines and Power. 145(6),
San Andrs, L. (2023). A Review of Turbine and Compressor Aerodynamic Forces in Turbomachinery. Lubricants. 11(1), 26-26.
Delgado, A., San Andrs, L., Yang, J., & Thiele, J. (2023). Experimental Force Coefficients for a Fully-Partitioned Pocket Damper Seal and Comparison to Other Two Seal Types. Journal of Engineering for Gas Turbines and Power. 145(5),
Lu, X., San Andres, L., & Yang, J. (2022). A Nonhomogeneous Bulk Flow Model for Gas in Liquid Flow Annular Seals: An Effort to Produce Engineering Results. JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME. 144(6),
San Andres, L., Kaizar, H., Jani, H., & Thorat, M. (2022). Effect of Pad Material, Copper Versus Steel, on the Performance of a Tilting Pad Journal Bearing: Measurements and Predictions. JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME. 144(3),

Chapters3

San Andres, L., & Koo, B. (2019). Effect of Lubricant Supply Pressure on SFD Performance: Ends Sealed with O-rings and Piston Rings. Proceedings of the 10th International Conference on Rotor Dynamics IFToMM. 359-371. Springer Nature.
San Andrs, L. (2013). Cryogenic Hybrid Fluid Film Bearings. Encyclopedia of Tribology. 630-641. Springer Nature.
Andrs, L. S. (2013). Squeeze Film Dampers. Encyclopedia of Tribology. 3252-3263. Springer Nature.

Conference Papers190

Koo, B., & San Andrs, L. (2022). A Model and Experimental Validation for a Piston Rings - Squeeze Film Damper: A Step Toward Quantifying Air Ingestion. Volume 8A: Structures and Dynamics Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, Volume 8A: Structures and Dynamics Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction.
Jung, W., San Andrs, L., & Kim, J. (2022). A Nonlinear Rotordynamics Model for Automotive Turbochargers Coupled to a Physical Model for a (Semi) Floating Ring Bearing System. Volume 8A: Structures and Dynamics Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, Volume 8A: Structures and Dynamics Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction.
Torres, J., San Andrs, L., & Yang, J. (2022). A Stepped Shaft Labyrinth Seal vs. a Pocket Damper Seal: Leakage and Dynamic Force Coefficients Under Wet Gas Operation. Volume 8A: Structures and Dynamics Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, Volume 8A: Structures and Dynamics Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction.
San Andrs, L., & Alcantar, A. (2022). Effect of a Reduced Oil Flow Rate on the Static and Dynamic Performance of a Tilting Pad Journal Bearing Running in Both the Flooded and Evacuated Conditions. Volume 8A: Structures and Dynamics Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, Volume 8A: Structures and Dynamics Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction.
Delgado, A., San Andrs, L., Yang, J., & Thiele, J. (2022). Experimental Force Coefficients for a Fully-Partitioned Pocket Damper Seal and Comparison to Other Two Seal Types. Volume 8A: Structures and Dynamics Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, Volume 8A: Structures and Dynamics Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction.