Dr. Nazim Nathoo


Dr. Nazim S. Nathoo is an Independent Consultant retiring in 2009 as Senior Principal Consultant from the Westhollow Research Center at Shell Global Solutions (US) Inc., where he:

  • Defined/participated in/oversaw the development of the software and field implementation of the Turbomachinery Thermodynamic Performance Evaluation technology – still in use as a standard approach in Shell US.
  • Oversaw the development of the suite of Turbomachinery Rotordynamic Analysis simulation programs.
  • Developed and patented innovative fabrication techniques for Shell’s ventures in supporting composites and diaper manufacture.
  • Introduced sophisticated high-fidelity Dynamic Simulation technology to understand/resolve transient behavior of mechanical and process (lube/seal oil, vent gas recovery, and utility – steam, air, hydrogen, etc.) systems.
  • Introduced and developed Reliability Modeling technology for complex integrated networks and individual operating assets. Both these technologies represent significant growth areas that have been recognized as high value-added ones to Shell businesses and as Top Notch Technologies.

Dr. Nathoo was a faculty member at the University of Houston, Department of Mechanical Engineering and an Instructor at the University of Texas at Austin, Department of Mechanical Engineering.

Dr. Nathoo received his Ph.D. (Mechanical Engineering) from The University of Texas at Austin, Austin, Texas and his B.S./M.S. (Mechanical & Aerospace Engineering) from the Illinois Institute of Technology, Chicago, Illinois.

Patents Include: 

1990   Method for Forming Preformed Material

1990   Apparatus for Forming Preformed Material

1989   Method of Determining the Shape of a Flat Fabric Pattern

1987   Robotic Stapling System for Fiber Placement of Composite Parts

1991   Method and Apparatus for Manipulation of Fabric

1992   Method for the Transport of a Homogeneous Mixture of Chopped Fibers

1995   Process to Prepare Foams from High Internal Phase Emulsions

Publications Include:

  • Libertiny, G. Z. and N. S. Nathoo, “Development of a Morison Seal for Industrial Use”, Proceedings of the National Conference on Fluid Power, Vol. 23, 1969.
  • Nathoo, N. S., et al., “Ride Control for High Speed Ground Transportation Including Passenger – Seat Dynamics and Active Aerodynamic Suspensions”, Journal of High Speed Ground Transportation, Vol. 10, No. 3, Fall 1976.
  • Nathoo, N. S., H. G. Rylander and A. J. Healey, “A Fluidic Rotational Speed Sensor”, Fluidics Quarterly, Vol. 9, No. 2, April 1977.
  • Nathoo, N. S. and A. J. Healey “Coupled Vertical – Lateral Dynamics of a Pneumatic Tired Vehicle: Part I – A Mathematical Model”, ASME Transactions, Journal of Dynamic Systems, Measurement, and Control, Vol. 100, December 1978.
  • Nathoo, N. S. and A. J. Healey, “Coupled Vertical – Lateral Dynamics of a Pneumatic Tired Vehicle: Part II – Simulated vs. Experimental Data”, ASME Transactions, Journal of Dynamic Systems, Measurement, and Control, Vol. 100, December 1978.
  • Nathoo, N. S. and W. G. Gottenberg, “Measuring the Thermodynamic Performance of Multistage Compressors Operating on Mixed Hydrocarbon Gases”, Proceedings of the 10th Turbomachinery Symposium, Texas A&M University, December 1981.
  • Nathoo, N. S. and O. E. Crenwelge, “Investigation of a Steam Turbine Rotor-Bearing System Displaying Uncommon Response Characteristics”, Presented at the 1982 ASME Winter Annual Meeting.
  • Nathoo, N. S. , “A Computer Based System for Monitoring the Mechanical and Thermodynamic Performance of Turbomachinery”, Presented at the ASME Second International Computer Engineering Conference and Show, August 1982.
  • Nathoo, N. S. and O. E. Crenwelge, “Case History of a Steam-Turbine Rotordynamic Problem: Theoretical Versus Experimental Results”, The Vibration Institute, Proceedings Machinery Vibration Monitoring and Analysis Meeting, April 1983.
  • Nathoo, N. S. and W. G. Gottenberg, “A New Look at Performance Analysis of Centrifugal Compressors Operating with Mixed Hydrocarbon Gases”, ASME Transactions, Journal of Engineering for Power, Vol. 105, No. 4, October 1983.


Shell Internal Reports include:

Over 600 internal Shell reports related to:

  • Analysis and experimental evaluation of rotordynamic and thermodynamic behavior of turbomachinery.
  • Design and development of fabrication processes for glass reinforced composite parts
  • Design and development of fabrication processes for highly absorbent foam.
  • Analysis/evaluation of special application equipment for oil production.
  • Analysis/modeling of transient dynamic behavior of mechanical equipment.
  • Reliability, maintainability and availability (RAM) analysis and mathematical modeling.
  • Dynamic simulation of complex, highly interlinked systems.