- Houston, Texas Area
- Oil & Energy
Norman Carnahan's Overview
Norman Carnahan's Certifications
Amateur Radio Operator - Extra Class
- Federal Communications Commission
- License KG5PP
Norman Carnahan's Volunteer Experience & Causes
Organizations I support:
- AIChE, SPE, UE&FA Forum, MTS, Society of Rheology, TMS, AADE, OTC
Norman Carnahan's Publications
Developments in Surface Contamination and Cleaning, Volume Six; Chapter Two: Microemulsions for Cleaning Applications
- Elsevier Inc.
This chapter presents a comprehensive contemporary review of microemulsion fundamentals and applications for cleaning of surfaces.
Authors: Norman Carnahan
- JPT, vol 41, number 10, pp. 1024-1025
- October 1989
Technology Today Series
This invited contribution summarizes thermodynamics, phase behavior and fundamentals of paraffins in petroleum systems and their tendency to precipitate and deposit in petroleum production operations.
Authors: Norman Carnahan, Kenneth E Starling
- Journal of Chemical Physics, volume 51, number 2, pp 635-636
Accurate equation of state model for fluid phase of rigid nonattracting sphere system.
Authors: Norman Carnahan, Robert A Zimmer, Frank L. Carnahan
- Offshore Technology Conference, 5-8 May , 1975
Study of subsea anchor pile phenomena using finite-element analysis.
Authors: Norman Carnahan, Erich A. Muller
- Physical Chemistry and Chemical Physics, 2006,8, 2619-262
An equation of state for the multicomponent fluid phase of nonattracting rigid particles of arbitrary shape is presented. The equation is a generalization of a previously presented equation of state for pure fluids of rigid particles; the approach describes the volumetric properties of a pure fluid in terms of a shape factor, ζ, which can be back calculated by scaling the volumetric properties of pure fluids to that of a hard sphere. The performance of the proposed equation is tested against mixtures of chain fluids immersed in a “monomeric” solvent of hard spheres of equal and different sizes. Extensive new Monte Carlo simulation data are presented for 19 binary mixtures of hard homonuclear tangent freely-jointed hard sphere chains (pearl-necklace) of various lengths (three to five segments), with spheres of several size ratios and at various compositions. The performance of the proposed equation is compared to the hard-sphere SAFT approach and found to be of comparable accuracy. The equation proposed is further tested for mixtures of spheres with spherocylinders. In all cases, the equation proved to be accurate and simple to use.
Authors: Norman Carnahan, Kenneth E. Starling
- Journal of Chemical Physics, v. 53, 472 (1970)
A review of an application of the Carnahan-Starling equation of state for rigid nonattracting spheres, pointing out that testing such a model using real fluid data is not a reliable method to evaluate relative validity of equation of state models for the fluid system of rigid nonattracting spheres.
- Journal of Chemical Physics, 54, 1523 (1971)
An equation of state is proposed for the mixture of hard spheres based on an averaging process over the two results of the solution of the Percus–Yevick integral equation for the mixture of hard spheres. Compressibility and other equilibrium properties of the binary mixtures of hard spheres are calculated and they are compared with the related machine‐calculated (Monte Carlo and molecular dynamics) data. The comparison shows excellent agreement between the proposed equation of state and the machine‐calculated data.
Authors: Norman Carnahan, Kenneth e. Starling
- AIChE Journal Volume 18, Issue 6, pages 1184–1189
- November 1972
This investigation demonstrates the advantages of an improved expression for intermolecular repulsions in equations of state. A highly accurate equation of state for the rigid-sphere fluid is used as the model of repulsion behavior in real fluids. A method for general usage of this new rigid-sphere equation in real fluid models is presented via reformulation of van der Waal's equation using the accurate new rigid-sphere equation to describe repulsion effects. To test this reformulation, properties of methane, ethane, propane, n-butane, isobutane, hydrogen sulfide, nitrogen, ethylene, acetylene, methyl chloride, cyclohexane, pentane and octane have been calculated. The advantage of using the accurate rigid-sphere equation was demonstrated by the general improvement in calculated properties relative to the original van der Waals and Redlich-Kwong equations. Calculations of enthalpy departures for mixtures of nitrogen and methane, propane and methane, pentane and cyclohexane, and pentane and octane also indicated the desirability of using the accurate rigid-sphere equation to describe repulsion effects in mixtures.
A small angle x-ray scattering study of the effect of pressure on the aggregation of asphaltene fractions in petroleum fluids under near-critical solvent conditions
Authors: Norman Carnahan, Lirio Quintero, David M. Pfund, John L Fulton, Richard D. Smith, Malcolm Capel, Kosta Leontaritis
- Langmuir, 1993, 9 (8), pp 2035–2044
- August 1993
Small-angle X-ray scattering (SAXS) is a technique that can provide information on the colloidal properties of asphaltenes-containing petroleum systems. This investigation is intended as a preliminary study of the tendency for aggregation of asphaltenes resulting from decreasing pressure at isothermal conditions. The results infer that aggregation of asphaltenes increases with reduction of pressure (and corresponding reduction of fluid density) at isothermal near-critical conditions.
Authors: Arun K. Pal, Gary A. Pope, Yasuhiko Aria, Norman Carnahan, Riki Kobayashi
- J. Chem. Eng. Data, 1976, 21 (4), pp 394–397
- October 1976
High accuracy PVT measurements for ethane.
Properties of Resins Extracted from Boscan Crude Oil and Their Effect on the Stability of Asphaltenes in Boscan and Hamaca Crude Oils
Authors: Norman Carnahan, Jean-Louis Salager, Raquel Anton, Antonio Davila
- Energy & Fuels, 1999, 13 (2), pp 309–314
- February 1999
Experimental results confirm that resins isolated from Boscan crude oil have a stabilizing effect on asphaltenes in Hamaca crude oil and in Boscan crude oil. A simple experimental technique, referred to as the filter drop spreading method, was used to detect the onset of flocculation quite accurately for crude oil mixtures and for mixtures of crude oils plus additives.
Norman Carnahan's Languages
Spanish(Professional working proficiency)
English(Native or bilingual proficiency)
Norman Carnahan's Organizations
Upstream Engineering and Flow Assurance ForumFounding Chair (2011-2012)
An international professional organization dedicated to ongoing education and training of practitioners of upstream engineering and flow assurance. The UE&FA Forum is hosted by the American Institute of Chemical Engineers. AIChE membership is not a requirement in order to join the UE&FA Forum.
Offshore Technology ConferenceMember, Board of Directors
Member of the Board of Directors of the Offshore Technology Conference, one of the largest international professional conferences and exhibitions dedicated to promotion of safety and advanced technologies for discovery and development of offshore energy resources.
Norman Carnahan's Skills & Expertise
- Phase Behavior
- Expert Witness
- Litigation Support
- Pipeline Systems
- Technical Writing
- Technical Documentation
- Programming Python, PERL, Visual Basic, Michigan Algorithm Decoder (MAD)
- Equations of State
- Chemical Engineering
- Petroleum Engineering
- Multiphase Flow
- Reservoir Management
- Field Development
- Offshore Drilling
- Gas Processing
- Process Engineering
- Subsea Engineering
- Reservoir Engineering
- Materials Science
- Energy Industry
- Natural Gas
- Process Simulation
- Flow Assurance
Norman Carnahan's Additional Information
- Honors and Awards:
Invited Lecture, IUPAP van der Waals Centennial Conference on Statistical Mechanics, RAI Centre, Amsterdam, The Netherlands, 1973;
Plenary Lecturer, VIII Congreso ``Física Estadística'', Universidad Carlos III de Madrid, Getafe, Spain, 25 a 27 de septiembre de 1997;
Plenary Lecturer, 1st Workshop on Global Phase Diagrams (Bunsen-Kolloquium 77), Walberberg, Germany, 21 March 1999;
Invited Plenary Lecture, Statistical Mechanics and Thermodynamics Group, Royal Society of Chemistry, Conference: Thermodynamics 2009, Imperial College London, U.K., September 23-25, 2009;
Fellow of American Institute of Chemical Engineers, (elected March 2010)
Distinguished Service Award, South Texas Section of American Institute of Chemical Engineers, September 2010
Founding Chair, Upstream Engineering and Flow Assurance Forum, American Institute of Chemical Engineers, March 2011
Board of Directors of the Offshore Technology Conference