Dr. Dara W. Childs (Retired)
Former Turbomachinery Laboratory Director and Leland T. Jordan Chair of Mechanical Engineering
2016: Developing a New Test Rig to Examine Rubbing Damage Caused by Whirl and Whip in Pump Rotordynamics
2015: Improving Mechanical Seal Lifetimes Via Modeling the Impact of Rotor and Housing Vibrations
2015: Tests of a Plain Annular (Liquid) Seal with and without Swirl Brakes
2015: Tests of a Plain Annular (Liquid) Seal in the Laminar, Transition and Turbulent Regime with a Swirl Brake
2015: Test a Plain Annular Seal over a Range of GVF Ratios From All Air to All Liquid with Imposed and Measured Preswirl
2015: Test a Tooth-on-Stator (TOS) Labyrinth Seal over a Range of GVF Ratios with Imposed and Measured Swirl
Dr. Paul Cizmas
Professor
2017: Flow Optimization Design Tool for Impellers and Seals Rotordynamics
2017: A reduced-order model of the Navier-Stokes equations for impeller and seal rotordynamic analysis
2014: Effect of Turbulence Model on Seal Flow Prediction
2013: Negative Pre-Swirl Brakes: Design and Numerical Modeling
Dr. Adolfo Delgado
Associate Professor
2017: Dynamic Characterization of Fully Partitioned Damper Seals
2017: Development a New Test Rig to Examine Mechanical Seal Failures due to Lateral Vibration and Pressure Fluctuations
2017: Pad Bearing Coating
Dr. Alan Palazzolo
Professor
2017: Experiment Investigation of Morton Effect (Thermally Induced Rotor Instability)
2016: Torsional Lateral Rotordynamic Software with VFD Effects and Motor Eccentric Force Determination
2016: Solid Modeler Implemented Rotordynamics with Support Structure and Flexible Casing
2016: Rotordynamic Software with Nonlinear Magnetic Bearings, Flexible Rotor, Flexible Foundation and Catcher Bearing Drop Effects
2016: Multiple Steady State Solution Software for Nonlinear Bearing and Geared Systems
2016: Gearbox Coupling Guard Heating and Windage Losses
2016: Drag Reducing Textured Surface Journal and Thrust Bearing
2016: CFD Based Impeller and Seal Rotordynamic Force Modeling
2016: Morton Effect Software and Test and Large Journal Motion Forces
2015: Software for Torsional Vibration of Machinery Trains with Variable Frequency Drive (VFD) Motors (Starts in 2009) and for Lateral Motor Force Prediction (Starts in 2015)
2015: LVTRC – Rotordynamics/Vibration Data Acquisition Software
2015: Prediction of Gearbox Windage Power Loss and Coupling Guard Temperature and Pressure
2014: Multiple Steady State Response Prediction for Nonlinear Rotordynamic Systems
2013: Solid Modeler Implemented Rotordynamics
2012: CFD-based Centrifugal Pump/Compressor Rotordynamic Force Coefficients
2011: Rotordynamics Software with Nonlinear Magnetic Bearings, Flexible Rotor, Flexible Foundation and Catcher Bearing Drop Effects
2009: Nonlinear Prediction of Thermally Induced Instability (Morton Effect) Dynamic Coefficient Prediction for Tilting/Fixed Pad Bearing with High Fidelity
Dr. Andreas Polycarpou
James J. Cain Chair and head of the Department of Mechanical Engineering
2016: Advanced Materials for Preventing Tribological Failures
2013: Advanced Materials for Preventing Tribological Failures in Submersible Pumps and Other Turbomachinery
Dr. Luis San Andrés
Mast-Childs Chair Professor
2017: CFD Analysis of Wet Gas Pocket Damper Seal and Validation Against Test Data
2016: Wet (Bubbly) Seals Identification of Force Coefficients
2016: Novel Carbon-Graphite Gas Bearings and Seals for Turbomachinery
2016: Linear-Nonlinear Force Coefficients for Squeeze Film Dampers
2016: Large-size Metal Mesh Foil Bearings and Test Rigs for Load Capacity
2016: Computational Model for Tilting Pad Journal Bearings
2016: A Test Rig for Evaluation of Thrust Bearings and Face Seals
2015: Leakage and Force Coefficients in a Wet Annular Seal: Influence of Journal Rotational Speed
2015: A Water-lubricated Hybrid Thrust Bearing: Identification of Axial Stiffness and Damping Force Coefficients (Year III)
2015: Pressing Needs for Seals/Bearing Software Development/Update
2015: Linear-Nonlinear Force Coefficients for Squeeze Film Dampers: Experimental Response of a Sealed Ends Squeeze Film Damper to Intermittent Impact Loads
2015: Novel Carbon-Graphite Gas Bearings and Seals for Turbomachinery
2015: On the Morton Effect: Simplified Predictive Model for a Thermally Instability Induced by Differential Heating in a Journal Bearing
2015: Experiments on the Performance of Large Diameter Metal Mesh Foil Bearings: Radial and Thrust (Year II)
2014: Thermal Effects on Pad Mechanical Deformations and TPJB Performance
2014
Computational Model for Tilting Pad Journal Bearings
By: San Andres
Software for Torsional Vibration of Machinery Trains with Variable Frequency Drive (VFD) Motors and for Lateral Motor Force Prediction
By: Palazzolo
Morton Effect, Large Journal Motions and High Fidelity Dynamic Coefficients
By: Palazzolo
CFD Based Impeller Rotordynamic Force Coefficients
By: Palazzolo
Experimentally Determine the Effect of Jacking Oil Ports on the Rotordynamic Characteristics of a 4-Pad, LBP, Tilting Pad Journal Bearing
By: Childs
Linear-Nonlinear Force Coefficients for Squeeze Film Dampers
By: San Andres
A Test Rig for Evaluation of Thrust Bearings and Face Seals
By: San Andres
Rotordynamics Software with Nonlinear Magnetic Bearings, Flexible Rotor and Flexible Foundation Effects
By: Palazzolo
Engineering Analyses for Pocket Damper Seals
By: San Andres
Solid Modeler Implemented Rotordynamics
By: Palazzolo
Negative Pre-Swirl Brakes: Design and Numerical Modeling
By: Cizmas
Alternative Bushings/Bearings/Seals for Electrical Submersible Pumps in Sub-Sea Applications
By: Childs
Wet (Bubbly) Seals Identification of Force Coefficients in a New Test Rig
By: San Andres
Effect of Turbulence Model on Seal Flow Prediction
By: Cizmas
Multiple Steady State Solution Solver for Nonlinear Rotordynamic Systems
By: Palazzolo
Manufacturing of Large Size Metal Mesh Foil Bearings and Test Rigs for Load Capacity
By: San Andres
Developing an Equilibrium-Position/Orientation Analysis Program with Applications to Rotordynamic Analysis for Electrical Submersible Pumps
By: Childs
Prediction of Swirl in ESP Impellers
By: Lee
LVTRC- Rotordynamic Data Acquisition and Analysis Expert System
By: Palazzolo
Novel Ni based coatings for Turbomachinery Applications
By: Zhang
Phase Separation of Multiphase Systems Based on Hydrodynamic Principles
By: Lee
2013
Computational Model for Tilting Pad Journal Bearings
By: Dr. San Andres
Examining the Impact of Pad Flexibility on the Rotordynamic Characteristics of Rocker-Pivot-Pad TP Bearings
By: Dr. Childs
Linear-Nonlinear Force Coefficients For Squeeze Film Dampers
By: Dr. San Andres
Engineering Analyses for Pocket Damper Seals and Combined Labyrinth-Brush Seals
By: Dr. San Andres
Nonlinear Time Transient Morton Effect, Large Nonlinear Orbits and Dynamic Coefficients for Fixed and Tilt Pad Bearings
By: Dr. Palazzolo
Software for Torsional Vibration of Machinery Trains with Variable Frequency Drive (VFD) Motors and for Motor Lateral Force Prediction
By: Dr. Palazzolo
CFD Based Centrifugal Pump/Compressor Rotordynamic force Coefficients
By: Dr. Palazzolo
Computational Fluid Dynamics Analysis of Labyrinth Seals for Improving Bulk-Flow Models
By: Dr. Cizmas
Experimentally Determine the Effect of Jacking Oil Ports on the Rotordynamic Characteristics of a 4-pad, LBP, Tilting Pad Journal Bearing
By: Dr. Childs
A Test Rig for Evaluation of Thrust Bearings and Face Seals
By: Dr. San Andres
Rotordynamics Software with Linear & Nonlinear Magnetic Bearings MB
By: Dr. Palazzolo
Negative Pre-Swirl Brakes: Design and Numerical Modeling
By: Dr. Cizmas
Alternative Bushings/Bearings/Seals for Electrical Submersible Pumps in Sub-Sea Applications
By: Dr. Childs
Shimmed Bump-Type Foil Bearings: Measurement Of Drag Torque, Lift Off Speed
By: Dr. San Andres
Advanced Materials for Preventing Tribological Failures in Submersible Pumps and Other Turbomachinery
By: Dr. Polycarpou
Pulsation and Surge Control in Mixed Reciprocating and Centrifugal Compressor Piping Systems
By: Dr. Palazzolo
Nanostructured Super Coatings for Submersible Pumps
By: Dr. Liang
2012
Measurements of Rotordynamic Response in a High Temperature Rotor Supported on Two Metal Mesh Foil Bearings
By: San Andres
Simulation Software for Torsional Vibration Prediction of Machinery Trains with Variable Frequency Drive (VFD) Motors
By: Palazzolo
Prediction of Open Fan Noise Fields using Computational Aeroacoustics Technique
By: Kim
Force Coefficients for a Large Clearance Open Ends SFD with a Central Feed Groove Test Results and Predictions
By: San Andres
Rotordynamic Stability and Forced Response Simulation Code with Nonlinear Magnetic Bearings
By: Palazzolo
2011
In Situ medium Scale Mechanical Characterization of Materials under Hydrogen Effects
By: Liang
Rotordynamic Performance of a Flexure Pivot Pad Bearing With Active and Locked Integral Squeeze Film Damper Including Predictions
By: Childs
Comparison of Leakage Between a Labyrinth Seal and an all Metal Compliant Gas Seal at High Temperature
By: San Andres
Numerical Simulation of the Flow Inside Squeeze Film Dampers
By: Morrison
Improved Leakage Prediction Algorithm of Labyrinth Seals
By: Morrison
Simulation Software for Vibration and Life Prediction of Mahinery Trains with Variable Frequency Drive VFD Motors
By: Palazzolo
In Situ medium Scale Mechanical Characterization of Materials under Hydrogen Effects
By: Liang
Simulation Code for Journal Bearing Morton Effect and Large Motions
By: Palazzolo
Study on Turbomachinery Fan and Impeller Noise Sources and Their Vibro-Acoustic Coupling Effects on Possible Structural Failure
By: Kim
A new Iterative synchronous response algorithm for analyzing the Morton Effect
By: Childs
Flat Plate Friction Test Results Analysis
By: Morrison
Rotordynamics Software with Nonlinear Magnetic Bearings Flexible Rotor an Flexible Foundation Effects
By: Palazzolo
2010
More on Metal Mesh Foil Bearings Effect of Excitation Frequency on Dynamic Force Coefficients
By: San Andres
Torsional Vibration Predictions for Machinery Trains with VFD Motors
By: Palazzolo
Experimental Dynamic and Static Characteristics for a Five-Pad Advantage Lue 50% offset Rocker-Pivot Tilting Pad Bearing
By: Childs
Ball Bearing Modeling Capability Enhancement
By: Palazzolo
Prediction of Fluid Instabilities in Hole Pattern and Honeycomb Stator Seals
By: Cizmas
Calculation of In Rotor Temperature Distributions for Morton Effect Predictions
By: Palazzolo
Morrison Improved Leakage Predication Algorithm for Labyrinth Seals
By: Vijaykumar
Convergent Tapered Seals
By: Morrison
Impact of Rotor Surface Velocity Leakage Models and Real Gas Properties on Rotordynamic Force Predictions of Gas Labyrinth Seals
By: Childs
Modifications to XLLaby 1CV model for Labyrinth Seal Rotordynamics
By: Childs
Morrison Wall Pressure Distributions in Whirling Seals
By: Sekaran
Investigatin of Labview as a Tool for Rotordynamic Measurements and Diagnostics
By: Palazzolo
2009
Experimental Rotordynamic Coefficients and Static characteristics fo an Orion Five Pad Advantage Lube 60% Offset Rocker Pivot Pad Bearing with Preload 0.59
By: Childs
Experimental Rotordynamic Coefficients and Static Characteristics for an Orion Five Pad Advantage Lube 60% Offset Rocker Pivot pad Bearing with Preload 0.3
By: Childs
Measurements of Drag Torque Lift Off Speed and Identification of Structural Stiffness and Damping in a Metal Mesh Foil Bearing
By: San Andres
Ball Bearing Modeling Capability Enhancement
By: Palazzolo
Prediction Fluid Instabilities in Hole Pattern Stator Seals
By: Cizmas
Dynamic Response of a Rotor Air Bearing System Due to Base Induced Periodic Motions
By: San Andres
Measurements of Rotordynamic Performance in a Hot Rotor Gas Foil Bearing System
By: San Andres
Study of Impact of Orbit Path Whirl Ratio and Clearance on the Flow Field and Rotordynamci Coefficients for a Smooth Annular Seal
By: Morrison
Labyrinth Seal Leakage Equation
By: Morrison
Investigation of Labview as a Tool For Rotordynamic Measurements and Diagnostics
By: Palazzolo
2008
A Novel FE Bulk-Flow Model
By: San Andres
Dynamic Performance of a Squeeze
By: San Andres
Static Characteristics and Rotordynamic Coefficients of a Four-Pad Tilting-Pad Journal Bearing With Ball-In-Socket Pivots in Load-Between-Pad Configuration
By: Childs
Measurement of Structural Stiffness and
By: San Andres
Rotordynamic Measurements on a High
By: San Andres
Thermohydrodynamic Analysis of Bump
By: San Andres
Simulation of a Whirling Smooth Annular Seal
By: Morrison
Dynamic Forced Response of a Rotor Hybrid Gas Bearing System due to Intermittent Shocks
By: San Andres
Predicted Rotordynamic Behaviour of Labyrinth Seals as Rotor Surface Velocity Approaches Mach 1
By: Childs
Investigation of Labview as a Tool for Rotordynamic Measurements and Diagnostics
By: Palazzolo
2007
Parameter Identification of an End Sealed SFD
By: San Andres
Experimental Rotrodynamic Coefficients and Static Characteristics for a Pressure Dam Bearing With a Sharp Shoulder
By: Childs
Effect of Side Feed Pressurization on the Performance of Shimmed Foil Gas Bearings – Part I: Experimental Verification
By: San Andres
Hybrid Gas Bearings with Controlled Supply Pressure to Eliminate Rotor Vibrations while Crossing System Critical Speeds
By: San Andres
2006
Wall Pressure Distributions for Statically and Dynamically Eccentric Labyrinth and Annular Seals
By: Morrison
Squeeze Film Damper with Mechanical Seal Identification of Force Coefficients from Circular Centered Orbit Tests
By: San Andres
Labyrinth Seal Leakage Experiments with Varying Design Parameters
By: Vance
Effect of Shrink Fits on Threshold Speeds of Rotordynamci Instability
By: Vance
Experimental Measurements of Wire Mesh Stiffness and Damping at Large Amplitudes
By: Vance
Computatinal Analysis of Gas Foil Bearings Integrating 1D and 2D Finite Element Models for Top Foil
By: Kim, San Andres
Further Imbalance Response Measurements of Rotor Supported on Bump Type Gas Foil Bearings Operation to 50 krpm
By: Kim, San Andres
Diagnosing Subsynchronous Vibrations Unstable or Benign
By: Vance
Test Results for Load on Pad and Load Between Pad Hybrid Flexure Pivot Tilting Pad Gas Bearings
By: San Andres
Investigation of Labview as a Tool for Rotordynamic Measurements and Diagnostics
By: Vance
Identification of Rotordynamic Forces in a Flexible Rotor System Using Magnetic Bearings
By: Childs
2005
Wall Pressure Distributions for Statically and Dynamically Eccentric Labyrinth and Annular Seals
By: Morrison
Identification of Force Coefficients in a Squeeze Film Damper with a Mechanical Seal
By: San Andres
Identification of Structural Stiffness and Damping in a Shoed Brush Seal
By: San Andres
Labyrinth Seal Leakage Experiments with Different Blade Profiles
By: Vance
The Influence of a Central Groove on Static and Dynamic Characteristics of an Annular Liquid Seal with Laminar Flow
By: Childs
Effect of Shrink Fits on Threshold Speeds of Rotordynamic Instability
By: Vance
Investigatino of LabVIEW as a Tool for Rotordynamic Measurements ande Diagnostics LVTRC
By: Vance
Experimental Evaluation of the Flow Inside an Open Faced Impeller
By: Morrison
Rotordynamic Performance of a Rotor Supported on Gas Foil Bearings
By: San Andres
Hybrid Tilting Pad Gas Bearings Analysis and Experimental Validation
By: San Andres
Seal Inlet Disturbance Boundary Condition Correlations for Rotordynamics Models
By: Rhode
Magnetic Bearing Test Rig Measurements, Predictins, and Theory Using Fiber Optic Strain Gauge Force Measurements
By: Childs
2004
Torsional Vibratin Analysis Computer Code XLTRC Torsion
By: Vance
Identification of Force Coefficients in Flexible Rotor Bearing Systems Enhancements and Further Validations
By: San Andres
Experimental Evaluation of Wire Mesh as a Bearing Damper Material
By: Vance
Experimental force Coefficients for a Sealed Squeeze Film Damper Test Rig Development
By: San Andres
Diagnosing Subsynchronous Vibration Unstable or Benign
By: Vance
Investigation of LabVIEW as a Tool for Rotordynamic Measurements and Diagnostics
By: Vance
Effect of Shrink Fits on Threshold Speeds of Rotordyanmic Instability
By: Vance
Wall Pressure Distributions for Staticaly and Dynamically Eccentric Labyrinth and Annular Seals
By: Morrison
Experimental Response of a Rotor Supported on Rayleigh Step Gas Bearings
By: San Andres
Fiber Optic Strain Gauge Calibration and Dynamic Flexibility Transfer Function Identification in Magnetic Bearings
By: Childs
2003
Experimental Evaluation of Wire Mesh as a Bearing Damper Material
By: Vance
A method for Identification of Force Coefficients in Flexible Rotor-Bearing Systems
By: San Andres
Journal Bearing Force Coefficients Under High Dynamic Loading-Experimental Results
By: San Andres
Bump-Type Foil Bearing Structural Stiffness Experiments and Predictions
By: San Andres
The Infulence of Internal Friction on Rotordynamic Instability Quantifying Internal Friction
By: Vance
Rotordynamic Discharge Line In Water Hammer Coupling Via Seals in Pump Rotordynamics
By: Childs
Supplemental report on Rotordynamics Discharge Water hammer Coupling Via Seals in Pump Rotordynamics
By: Zhang
Experimental Response of a Rotor Supported on Flexure Pivot Hydrostatic Pad Gas Bearings
By: San Andres