Rishi S. S. Raj

Program Director, ROTC & Professor of Mech. Engine

Main Affiliation

Mechanical Engineering


Marshak Science Building






Rishi S. S. Raj


Faculty Senate Chair at CCNY. Expert in the areas of turbomachines, explosion and implosion,turbulence and underwater launchers.

Interests include the fifth dimension, speed of mind, and intelligence.

Areas of Expertise:
Turbulence in rotating flows, wakes, corner flows transition and transient flows in turbomachinery erosion - corrosion - deposition from contaminated hot gas flows.

Current Research Associates:
Dr. R. Hubbell, United States Navy
Y. Andreopoulos and C. Watkins, The City College of New York


  • B. Sc. (Hons), Math-Physics, 1964, Punjabe University;
  • M.S.(Hons), Mechanical Engineering, 1969, PFU, MOSOW, U.S.S.R.
  • Ph.D. Aerospace, 1974, Penn. State.
  • Distinguished Fellow: U.S. Navy - ASEE, Technical Specialist - U.S. Army

Courses Taught

  • Power generation
  • Turbulent flows
  • Applied fluid mechanics
  • Steam and Gas Turbines
  • Thermodynamics

Research Interests

 Professor Raj has published more than eighty technical papers and coauthored seven books.  He developed for the first time the turbulence dissipation equation applied to rotating flows and showed that it is not independent of rotation.  His wake models related to cascade, rotors and free stream turbulence are first in the field of turbomachinery.  He discovered two non-dimensional parameters Gibbs Time and Gibbs Number to quantify explosion-implosion.  He was appointed twice fellow of NASA and four times the distinguished fellow of U.S. Navy.  At NASA his work involved new fuels in space for long range flights.  While he was in the Navy his work involved advanced launching systems, sonar, transient flow pumps, and underwater explosion-implosion phenomena.  He has collaborated extensively with industry in the areas of erosion, corrosion, and deposition from highly contaminated, high temperature gas flows and development of high temperature new turbine.  He has also examined most fundamental problems; transition from conservative to non-conservative field, highly accelerating rotating flows, ram-pump- mid stroke rumble, and concepts beyond relativity.  He has served as a consultant to the United Nations in the field of turbomachinery and also chairman of ASME’s IGTI’s coal utilization committee.  He has lectured extensively internationally.


  • Raj, R., and Lakshrninarayana, B, "Characteristics of Turbulent Wakes Behind Cascade of Aerofoils," J. Fl. Mech., Vol. 41, 1973
  • Raj, R, "Form of the Turbulence Dissipation Equation as Applied to Curved and Rotating Turbulent Flows," J. Phys. Fluids, Vol. 18, 1975
  • Raj, R, and Lumley J.L., "A Theoretical Investigation on the Structure of Fan Wakes," ASME J. Fluid Engr. 1978
  • Raj, R, "Deposition Results of a Transpiration Air Cooled Turbine Vane Cascade in a Contaminated Gas Stream," ASME J. Engr. Power, vol. 105, 1983
  • Raj, R, "Beyond Relativity - A Mathematical Formulation of the Universe with the Fifth Dimension, Proceeding of U.N.O Conference on VEDAS," July 14-16, 1993
  • Rarma, T. D, Raj, R. and Raj, V., Science and Logic of the Absolutely Pure, Book, 357 Pages, G. I. Corp, N.J., April, 1999
  • Thermo-Fluid Systems Analysis and Design, 3rd Ed, 2014, GI Corp.
  • Practical Chemistry - An Easy Way to Learn Chemistry, International Edition 2014, GI Corp.