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Main Campus
4004 Nitschke Hall MS 312
1650 N. Westwood
Toledo, OH 43606-3390
Phone: (419) 530-8210
Fax: (419) 530-8206

Duen-Ren Jeng, Ph.D.

jengProfessor Emeritus
Mechanical, Industrial & Manufacturing Engineering Department
Nitschke Hall 4040
University of Toledo
Toledo, OH 43606

Phone: (419) 530-8223
FAX: (419) 530-8206
E-mail: djeng@eng.utoledo.edu 

 

 

Biography

Dr. Jeng is currently Professor Emeritus at the University of Toledo. He received is B.S. from National Taiwan University and his M.S. and Ph.D. from the University of Illinios. In 1965, he joined the University of Alabama as Assistant Professor in Mechanical Engineering, and in 1967 he became Assistant Professor at the University of Toledo.

Dr. Jeng is a member of Pi Tau Sigma, Sigma Xi, Phi Kappa Phi, American Society of Mechanical Engineers (ASME), American Society of Engineering Education (ASEE), and Ohio Society of Professional Engineering (OSPE). He is listed in American Men of Science International Scholars Directory (I.S.P.), and Who's Who in Midwest Dictionary of International Biography Man of Achievement.

Research Interests

  • Fluid Mechanics
  • Heat Transfer
  • Wind Energy
  • Bio-Fluid Mechanics

Research Grants Awarded

  • "Scramjet Technology," Research contract with North American Aviation, Feb. 1966-Dec. 1966 $15,000
  • "Turbulent Separated Flow," Research contract with North American Aviation, Jan. 1967 - Sept. 1967 $15,000
  • The University of Toledo Summer Faculty Research Fellowship Summer of 1970
  • NASA-ASEE Summer Faculty Research Fellowship, George C. Marshall Space Flight Center, 1972 and 1973.
  • "Study of Heat and Mass Transfer in Turbulent Diffusing Flow in a Gas- loaded Heat Pipe," The University of Toledo Faculty Research Award, Summer 1975.
  • "Experimental Study of Spiral Wick for Use in a Large Capacity Heat Pipe," The University of Toledo Faculty Research Award, Summer 1976.
  • "Evaluation of the Performance of Wind Turbine Concepts and Operating Wind Turbines," NASA, July 1982, 15 months, $73,038.
  • "Effect of Curvature on Heat Transfer in a Turbulent Boundary Layer (Application For 2-D Turbine Blade) NASA Lewis Research Center. a. August 1983 12 months Total $42,838 b. May 1985 6 months Total 15,000
  • "Flow and Convective Heat Transfer Analysis of a Fuel Injection Fuel," P.I. Sharon Mfg., Jan. 90, 1 year, $25,801.
  • "Rarefied Flow of Gases in Internal and External Geometries," NASA Lewis,, Co P.I., 3 years, 89-92, $16,000.

Publications

  • B. T. Chao, D. R. Jeng and K. J. Trigger, "The Effect of Flank Wear on Tool Temperatures in the Machining of Cast Iron," ASME Paper 61-WA-263 1961
  • B. T. Chao and D. R. Jeng, "Unsteady Stagnation Point Heat Transfer," trans. ASNM, Journal of Heat Transfer series C, pp. 221-230 May 1965
  • D. R. Jeng, "Thermal Contact Resistance in Vacuum," Trans. ASME, Journal of Heat Transfer, series C, Vol. 89, No. 3, Aug. 1967
  • D. R. Jeng, "Calculation of Unsteady Flow in Ducts of Arbitrary Shape by the Point Matching Method," Trans. ASNffi, Journal of Applied Mechanics, series E, Vol. 34, September 1967
  • R. V. S. Yalamanchili and D. R. Jeng, "Hypersonic Laminar Boundary Layers Around Slender Bodies," 19th Congress of The International Astronautical Federation, Paper RE90, Presented Oct. 1968. Published in Proceedings of 19th IAF.
  • S. T. Wu and D. R. Jeng, "Unsteady MHD Flow in Arbitrary Ducts by Point Matching Method," AIAA Journal, Vol. 7, No. 8, August 1969.
  • D. R. Jeng and R. S. Reddy Gorla, "Rapid Calculation for Convective Heat Transfer in Laminar Boundary Layers by Gaussian Quadratures," Journal of Engineering Mathematics, Vol. 4, No. 4, October 1970..
  • R. S. Reddy Gorla and D. R. Jeng, "Laminar Plane Wall Jet," Development in Mechanics, Vol. 6, Proceedings on The 12th Midwestern Mechanics Conference August 1971.
  • D. R. Jeng and R. S. Reddy Gorla, "Numerical Evaluation of the Wall Gradient in Laminar Boundary Layer by Gaussian Quadratures When Pr>>I," Indian Journal of Technology, Vol. 11, April 1973.
  • D. R. Jeng and S. T. Wu, "Poiseulle Flow of a Rarefied Gas in a Rectangular Duct," Development in Mechanics, Vol. 7, Proceedings of the 13th Midwestern Mechanics Conference, August 1973.
  • D. R. Jeng and R. S. Reddy Gorla, "Unsteady Stagnation Point Heat Transfer Due to Unsteady Free Stream Temperature," Trans. of ASUE, Journal of Heat Transfer, series C, No. 3, August 1973.
  • D. R. Jeng and D. W. William, "Transpiration Cooling in Three- Dimensional Laminar Boundary Layer Flow Near Stagnation Point," AIAA Journal, Vol. 11, No. 11, November 1973.
  • D. R. Jeng, E. J. Lee and K. J. De Witt, "Simultaneous Conductive, Convective and Radiative Heat Transfer for Laminar Flow in Circular Tubes with Constant Wall Temperature," Presented at 5th International Heat Transfer Conference, Published in Vol. 1, Heat Transfer 1974, JSME-SCEJ.
  • D. R. Jeng, E. J. Lee and K. J. De Witt, "On the Exponential Kemers Appearing in the Radiative Heat Flux," Indian Journal of Technology, Vol. 13, Feb. 1975, pp. 72-75.
  • D. R. Jeng, E. J. Lee and K. J. De Witt, "A Study of Two Limiting Cases in Convective and Radiative Heat Transfer with Non-Gray Gases," International Journal of Heat and Mass Transfer, Vol. 19, pp. 589-596, Feb. 1976.
  • D. R. Jeng, M. H. Lee and K. J. De Witt, "'Me Final Approach to Steady State in Non-Steady Stagnation Point Heat Transfer," Journal of Engineering Mathematics, Vol. 10, No. 2, April 1976.
  • D. R. Jeng and B. T. Chao, "Unsteady Heat Transfer from a Rotating Disk or Cone with Large Suction," Proceedings of 25th Heat Transfer and Fluid Mechanics Institute, 1976.
  • D. R. Jeng, M. H. Lee and K. J. De Witt, "Convective Heat Transfer Through Boundary Layers with Arbitrary Pressure Gradient and Non- Isothermal Surfaces," Journal of Heat and Mass Transfer, Vol. 21, pp. 499-509, 1978.
  • M. H. Lee, D. R. Jeng and K. J. De Witt, "Laminar Boundary Layer Transfer Over Rotating Bodies in Forced Flow," Journal of Heat Transfer, Trans. of ASME, Vol. 100, No. 3, August 1978, pp. 496-502.
  • D. R. Jeng and R. S. Reddy Gorla, "Interaction of Unsteady Thermal Boundary Layer with a Wall of Finite Thickness at Stagnation Point," proceedings of 26th Heat Transfer and Fluid Mechanics Institute, 1978 pp. 163-179.
  • D. R. Jeng, K. J. De Witt and M. H. Lee, "Forced Convection Over Rotating Bodies with Non-Uniform Surface Temperature," Int. Journal of Heat and Mass Transfer, Vol. 22, pp. 89-97, 1979.
  • R. L. Fournier, K. J. De Witt and D. R. Jeng, "Surface Chemical Reactions on Stationary or Rotating Bodies in Nonisothermal Laminar Boundary Layer Flows," AlChE Symposium Series #202, 77. 94-103, 1981.
  • Jiwon Yang, D. R. Jeng & K. J. De Witt, "Laminar Free Convection from Vertical Plate with Nonuniform Surface Conditions," Numerical Heat Transfer, Vol. 5, 1982.
  • D. R. Jeng, T. C. Chang, K. J. De Witt, "Momentum and Heat Transfer in the Laminar Boundary Layer on a Continuous Moving Surface," Trans. of ASME, Vol. 108, No. 3, pp. 532-539, Aug. 1986.
  • T. C. Allen Chang, D. R. Jeng and K. J. De Witt, "Natural Convection to Power-law 'Fluids from Two-dimensional or Axisymmetric Bodies of Arbitrary Contour," Int. J. of Heat Mass Transfer, Vol. 31, No. 3, pp. 615- 624, 1988.
  • M. R. Cameron, D. R. Jeng and K. J. DeWitt, "Nfixed Forced and Natural Convection from Two-dimensional or Axisymmetric Bodies or Arbitrary Contour," Technical Note, Int. J. of Heat Mass Transfer, Vol. 34, No. 2, pp. 582-5879 1991.
  • Chan-Hong Chung, Duen-Ren Jeng, Kenneth J. DeWitt and Theo G. Keith, Jr., "Numerical Simulation of Rarefied Gas Flow Through a Slit," J. of Thermophysics and Heat Transfer, Vol. 6, No. 1, pp. 27-34, Jan- March, 1992.

Conference Presentations

  • Presentation of technical paper entitled "Hypersonic Laminar Boundary Layers Around Slender Bodies," at the 19th Conference of International Astronautical Federation (IAF) in the session for Re- entry Physics: New York City: October 18, 1968.
  • Presented a paper entitled "Laminar Plane Wall Jet," at the 12th NEdwestem Mechanics Conference: University of Notre Dame: August 17-199 1971.
  • Presented a paper entitled "Poiseulle Flow of a rarefied Gas in a Rectangular Duct," at the 13th Midwestem Mechanics Conference: University of Pittsburgh: Pittsburgh, Penn., August 13-15, 1973.
  • Presented a paper entitled "Simultaneous Conductive, Convective and Radiative Heat Transfer for Laminar Flow in Circular Tubes with Constant Wall Temperature," at 5th Intemational Heat Transfer Conference: September 1-6, 1974: Tokyo, Japan.
  • Presented a paper entitled "Unsteady Heat Transfer from a Rotating Disk or Cone with Large Suction," in the session for convective heat transfer at the 25th Heat Transfer and Fluid Mechanics Institute Conference: University of Califomia, Davis, June 21-23, 1976.
  • Gave a seminar "Heat Transfer and Fluid Mechanics Problems Related to U.S. Space Program,' at National Chen-Kong University: Tainan, Taiwan, Summer, 1974.
  • D. R. Jeng, T. G. Keith and Abdullah Aliakbarkhanafieh, "Study of Aerodynamic Characteristics of Double and Single Bladed Wind Turbines Using Helical Vortex Theory," Intemational Conference on Energy, January 1981, Manilla, Philippines.
  • D. R. Jeng, T. G. Keith and Abdullah Aliakbarkhanafieh, "Aerodynamic Performance Prediction of Horizontal Axis Wind Turbines," Proceedings for Wind Turbine Dynamics Workshop, February 24-26, 1981 Cleveland State University: Cleveland, Ohio, NASA Conference publication 2185, DOE Publication CONF-810226.
  • D. R. Jeng, A. Aliakbarkhanafieh, T. G. Keith and Tse-Yien Peng, "Aerodynamic Performance and Load Analysis of the NASA MOD-OA and MOD-1 Wind Turbine," paper will be presented at Wind and Solar Energy Conference, April 1-7, 1982, Kansas City, Missouri.
  • J. A. White, T. G. Keith and D. R. Jeng, "Performance Prediction of a Tip- Controlled Wind Turbine Rotor," Proceedings of the 1983 UMC. Wind/solar Engineering Conference, Kansas City, Missouri, April 1983.
  • T. G. Keith, J. A. White and D. R. Jeng, "Aerodynamic Performance Prediction of a Tip-Controlled Horizontal Axis Wind Turbine," Proceedings of Wind Workshop VI, ASES Annual Meeting, NEnneapolis, Minnesota, May 1983.
  • K. C. Fu and D. R. Jeng, "Thermal Analysis of an Orthotropic Engineering Body," presented at 4th International Conference in Applied Numerical Modeling, Tainan, Taiwan, The Republic of China, December 27-29, 1984.
  • D. R. Jeng, T. C. Chang and K. J. De Witt, "Momentum and Heat Transfer in the Laminar Boundary Layer on a Continuous Moving Surface," 23rd National Heat Transfer, HTD. Vol. 42. Denver, Colorado, August 5-8. 1985.
  • D. R. Jeng, K. N. Murali, K. J. De Witt, "The Cooling of a Continuous Surface Moving Through a Fluid," Proceedings of the Symposium on Heat and Mass Transfer in Honor of B. T. Chao, Univ. of Illinois, Oct. I and 2, 1987.
  • H. Wang Kim and D. R. Jeng, "Convective Heat Transfer in Laminar Boundary Layer Near Separation Point," ASME 25th National Heat Transfer Conference, July 24-27, 1988, Houston, TX, also published in Proc/1988, Nat. H. T. Conf., Vol. 3, HTD, Vol. 9, pp. 471-476.
  • D. R. Jeng, T. S. Chang, K. J. De Witt and M. Hariprasad, "Momentum and Heat Transfer in the Laminar Boundary Layer on a Continuously Moving Cylindrical Surface," ASME Winter Annual Meeting, Nov. 27- Dec. 1, 1988, Chicago, EL. Also published in Symp-Fundamental & Forced Convection HT HTD, Vol. 101, pp. 53-61, 1988.
  • Chan-Hong Chung, Duen-Ren Jeng, K., J. De Witt and Theo G. Keith, "Flow of Rarefied Gases Over Two-dimensional Bodies," AIAA, 9th Computational Fluid Dynamics Conference, June 14-16, 1989, Buffalo, NY; Proceedings AIAA Compl. Fl. Mech., pp. 389-399.
  • Chan-Hong Chung, K. J. De Witt, D. R. Jeng and T. G. Keith, 'Rarefied Gas Flow Through Two-Dimensional Nozzles," 25th Joint Propulsion Conference and Exhibit, July 10-13, 1989, Monterey, CA; AIAA paper 892-893. 19. D. R. Jeng, K. N. Murali and K. J. DeWitt, "The Cooling of a Continuously Stretching Sheet and Cylindrical Filament Moving Through a Fluid," 9th International Conference, Jerusalem, Israel, Aug., 1990, Proceedings, Vol. 4, pp. 341-346.
  • C. Guetaii, K. J. DeWitt and D. R. Jeng, "Laminar Boundary-Layer Flow with Combined Homogeneous and Heterogeneous Reactions Over a Rotating Sphere," AICHE. 1990 Annual Meeting, Nov. 11-16, 1990, Chicago, IL, paper 262-a.
  • C. H. Chung, T. G. Keith, Jr., D. R. Jeng and K. J. DeWitt, 'Numerical Simulation of Rarefied Gas Flow Through a Slit," AIAA-ASME 5th Joint T'hermophysics and Heat Transfer Conference, June 18-20, 1990, Seattle, WA, AIAA 90-1694.
  • C. H. Chung, K. J. DeWitt and D. R. Jeng, "New Approach in Direct- Simulation of Gas Mixture," AIAA 26th Thermophysics Conference, June 24-26, 1991, Honolulu, Hawaii, AIAA-91-1343.
  • Dean Merrifield, Duen-Ren Jeng and Gerald S. Jakubowski, "Measurement of Wall Shear Stress and Separation Point by Means of an Ink Dot Technique," Symposium on Experimental and Numerical Flow Visualization, Dec. 1-6, 1991, ASME Winter Annual Meeting, FED, Vol. 128, Exp & Nu. Flow Visualization.
  • D. R. Jeng, R. K. Irey, R. Mantha and M. Pourazady, "Finite Difference Solution of Poisson Equation Using a Finite Element Mesh," First International Conference on Computer Application in Science, Tech. and Medicine, Dec. 26-28, 1991, Isfahen, Iran, Proceedings, pp. 136-139, Dec. 199 1.
  • Chan-Hong Chung, K. J. DeWitt, D. R. Jeng and P. F. Penko, "Internal Structure of Shock Waves in Disparate Mass Mixtures," 30th Aerospace Science Meeting and Exhibit, Jan. 6-9. 1992, Reno, NV, AIAA 92-0496.

Consulting (Industrial)

Re-Elect-Olite Corporation, Product Division, Toledo, Ohio April 1971-Dec. 1974

Toledo Water Department, Mr. Charles M. Ginsburg, Operating Engineering, March 1971 to present

Engineering Corporation of America, Chicago, Illinois, June 1975 to present

Dana Corporation, Intemational Planning Division, Toledo, Ohio, December 1973 to present

Owens Illinois Technical Center, Toledo, Ohio, October 1970 to present

Ferrel William Inc., Mechanical Contractor, Toledo, Ohio, October 1976 to present

Exothermics Corporation, Energy Recovery Systems, Toledo, Ohio, 1984 to present.

Last Updated: 4/11/17