Refereed Journal Articles

Many of these articles are available for download from PDXScholar.

 (1) J. D. Ramshaw, D. W. Schaefer, J. S. Waugh, and J. M. Deutch, "Dielectric Polarization and Alignment and the Structure of Polar Fluids," J. Chem. Phys. 54, 1239 (1971).

 (2) J. D. Ramshaw, "On the Molecular Theory of Dielectric Polarization in Rigid-Dipole Fluids," J. Chem. Phys. 55, 1763 (1971).

 (3) J. D. Ramshaw, "New Method for Generating Density Expansions," J. Chem. Phys. 57, 2070 (1972).

 (4) J. D. Ramshaw, "Existence of the Dielectric Constant in Nonpolar Fluids," Physica 62, 1 (1972).

 (5) J. D. Ramshaw, "Existence of the Dielectric Constant in Rigid-Dipole Fluids: The Direct Correlation Function," J. Chem. Phys. 57, 2684 (1972).

 (6) C. H. Wang and J. D. Ramshaw, "Decay of Multiple Spin Echoes in Dipolar Solids," Phys. Rev. B 6, 3253 (1972).

 (7) J. D. Ramshaw, "On the Reduction of Many-Body Dielectric Theories to the Onsager Equation," J. Chem. Phys. 61, 889 (1974).

 (8) J. D. Ramshaw and J. A. Trapp, "Characteristics, Stability, and Short-Wavelength Phenomena in Two-Phase Flow Equation Systems," Nucl. Sci. Eng. 66, 93 (1978).

 (9) J. A. Trapp and J. D. Ramshaw, "A Simple Heuristic Method for Analyzing the Effect of Boundary Conditions on Numerical Stability," J. Comput. Phys. 20, 238 (1976).

(10) J. D. Ramshaw and J. A. Trapp, "A Numerical Technique for Low-Speed Homogeneous Two-Phase Flow with Sharp Interfaces," J. Comput. Phys. 21, 438 (1976).

(11) J. D. Ramshaw, "Debye-Huckel Theory for Rigid-Dipole Fluids," J. Chem. Phys. 64, 3666 (1976).

(12) R. W. Zwanzig and J. D. Ramshaw, "Potts Model Specific Heat Critical Exponents," J. Phys. A: Math. Gen. 10, 65 (1977).

(13) J. D. Ramshaw, R. C. Mjolsness, and O. A. Farmer, "Numerical Method for Two-Dimensional Steady-State Chemical Laser Calculations," J. Quant. Spectrosc. Radiat. Transfer 17, 149 (1977).

(14) O. A. Farmer and J. D. Ramshaw, "A Method for Rapid Attainment of the Steady State in Two-Dimensional Time-Marching Supersonic Flow Calculations," J. Comput. Phys. 24, 23 (1977).

(15) J. D. Ramshaw, "Existence of the Dielectric Constant in Rigid-Dipole Fluids: The Functional-Derivative Approach," J. Chem. Phys. 66, 3134 (1977).

(16) C. W. Hirt, J. D. Ramshaw, and L. R. Stein, "Numerical Simulation of Three-Dimensional Flow Past Bluff Bodies," Comp. Meths. Appl. Mech. Eng. 14, 93 (1978).

(17) J. D. Ramshaw, "Existence of the Dielectric Constant in Fluids of Nonlinear Rigid Polar Molecules," J. Chem. Phys. 68, 5199 (1978).

(18) J. K. Dukowicz and J. D. Ramshaw, "Tensor Viscosity Method for Convection in Numerical Fluid Dynamics," J. Comput. Phys. 32, 71 (1979).

(19) J. D. Ramshaw, "Comments on the Theory of Dipolar Fluids," J. Chem. Phys. 70, 1577 (1979).

(20) J. D. Ramshaw, "Brownian Motion in a Flowing Fluid," Phys. Fluids 22, 1595 (1979).

(21) J. D. Ramshaw, "Conjectured Singularity Loci for the Potts Model on the Square Lattice," J. Phys. A: Math. Gen. 12, L271 (1979).

(22) J. D. Ramshaw, "Partial Chemical Equilibrium in Fluid Dynamics," Phys. Fluids 23, 675 (1980).

(23) J. D. Ramshaw and L. D. Cloutman, "Numerical Method for Partial Equilibrium Flow," J. Comput. Phys. 39, 405 (1981).

(24) J. D. Ramshaw, "Functional Derivative Relations for a Finite Non-Uniform Molecular Fluid in the Canonical Ensemble," Mol. Phys. 41, 219 (1980).

(25) J. D. Ramshaw, "Dielectric Saturation in Dipolar Fluids. I. The Single-Molecule Distribution Function," J. Chem. Phys. 73, 5294 (1980).

(26) J. D. Ramshaw, "Debye-Huckel Theory for Particles of Arbitrary Electrical Structure," J. Chem. Phys. 73, 3695 (1980).

(27) T. D. Butler, L. D. Cloutman, J. K. Dukowicz, and J. D. Ramshaw, "Multidimensional Numerical Simulation of Reactive Flow in Internal Combustion Engines," Prog. Energy Combust. Sci. 7, 293 (1981).

(28) J. D. Ramshaw, "Brownian Motion in a Flowing Fluid Revisited," Phys. Fluids 24, 1210 (1981).

(29) J. D. Ramshaw, "Time-Dependent Direct Correlation Function," Phys. Rev. A 24, 1567 (1981).

(30) J. D. Ramshaw and N. D. Hamer, "Existence of the Dielectric Constant in Dipolar Fluid Mixtures," J. Chem. Phys. 75, 3511 (1981).

(31) J. D. Ramshaw, "Dielectric Constant in Fluids of Classical Deformable Molecules," J. Chem. Phys. 76, 1183 (1982).

(32) J. D. Ramshaw, "Existence of the Dielectric Constant in Fluids of Classical Deformable Molecules," J. Chem. Phys. 76, 2635 (1982).

(33) J. D. Ramshaw and J. K. Dukowicz, "Reply to Kansa's Remarks on the Efficiency of ICE-Like Schemes for Combustion Problems," J. Comput. Phys. 49, 349 (1983).

(34) J. D. Ramshaw, "A Method for Enforcing the Solenoidal Condition on Magnetic Field in Numerical Calculations," J. Comput. Phys. 52, 592 (1983).

(35) J. D. Ramshaw, "Dielectric Polarization in Random Media," J. Stat. Phys. 35, 49 (1984).

(36) J. D. Ramshaw, "Probability Densities and the Random Variable Transformation Theorem," Am. J. Phys. 53, 178 (1985).

(37) J. D. Ramshaw, P. J. O'Rourke, and L. R. Stein, "Pressure Gradient Scaling Method for Fluid Flow with Nearly Uniform Pressure," J. Comput. Phys. 58, 361 (1985).

(38) J. D. Ramshaw, "Augmented Langevin Approach to Fluctuations in Nonlinear Irreversible Processes," J. Stat. Phys. 38, 669 (1985).

(39) J. D. Ramshaw, "Conservative Rezoning Algorithm for Generalized Two-Dimensional Meshes," J. Comput. Phys. 59, 193 (1985).

(40) J. D. Ramshaw and A. A. Amsden, "Improved Iteration Scheme for Partial Equilibrium Flow," J. Comput. Phys. 59, 484 (1985).

(41) J. D. Ramshaw, "Simplified Second-Order Rezoning Algorithm for Generalized Two-Dimensional Meshes," J. Comput. Phys. 67, 214 (1986).

(42) M. S. Shaw, J. D. Johnson, and J. D. Ramshaw, "An Approximate Variational Method for Improved Thermodynamics of Molecular Fluids," J. Chem. Phys. 84, 3479 (1986).

(43) J. D. Ramshaw and K. Lindenberg, "Augmented Langevin Description of Multiplicative Noise and Nonlinear Dissipation in Hamiltonian Systems," J. Stat. Phys. 45, 295 (1986).

(44) J. D. Ramshaw, "Remarks on Entropy and Irreversibility in Non-Hamiltonian Systems," Phys. Lett. A 116, 110 (1986).

(45) J. D. Ramshaw, "Entropy and Irreversibility in Noisy Non-Hamiltonian Systems," Phys. Lett. A 117, 172 (1986).

(46) J. D. Ramshaw, "Elementary Derivation of Nonlinear Transport Equations from Statistical Mechanics," J. Stat. Phys. 45, 983 (1986).

(47) J. D. Ramshaw and A. A. Amsden, "Inclusion of Temperature Variations in a Numerical Scheme for Partial Equilibrium Flow," J. Comput. Phys. 71, 224 (1987).

(48) J. D. Ramshaw, "Phase Space Density Representations in Fluid Dynamics," J. Stat. Phys. 56, 149 (1989).

(49) J. D. Ramshaw and V. A. Mousseau, "Accelerated Artificial Compressibility Method for Steady-State Incompressible Flow Calculations," Computers & Fluids 18, 361 (1990).

(50) J. D. Ramshaw, "Self-Consistent Effective Binary Diffusion in Multicomponent Gas Mixtures," J. Non-Equilib. Thermodyn. 15, 295 (1990).

(51) J. D. Ramshaw, "Microscopic Irreversibility and Gibbs Entropy," J. Non-Equilib. Thermodyn. 16, 33 (1991).

(52) J. D. Ramshaw and C. H. Chang, "Ambipolar Diffusion in Multicomponent Plasmas," Plasma Chem. Plasma Process. 11, 395 (1991).

(53) J. D. Ramshaw and G. L. Mesina, "A Hybrid Penalty-Pseudocompressibility Method for Transient Incompressible Fluid Flow," Computers & Fluids 20, 165 (1991).

(54) J. D. Ramshaw and V. A. Mousseau, "Damped Artificial Compressibility Method for Steady-State Low-Speed Flow Calculations," Computers & Fluids 20, 177 (1991).

(55) J. D. Ramshaw and C. H. Chang, "Computational Fluid Dynamics Modeling of Multicomponent Thermal Plasmas," Plasma Chem. Plasma Process. 12, 299 (1992).

(56) C. H. Chang and J. D. Ramshaw, "Numerical Simulations of Argon Plasma Jets Flowing into Cold Air," Plasma Chem. Plasma Process. 13, 189 (1993).

(57) J. D. Ramshaw, "Hydrodynamic Theory of Multicomponent Diffusion and Thermal Diffusion in Multitemperature Gas Mixtures," J. Non-Equilib. Thermodyn. 18, 121 (1993).

(58) J. D. Ramshaw and C. H. Chang, "Ambipolar Diffusion in Two-Temperature Multicomponent Plasmas," Plasma Chem. Plasma Process. 13, 489 (1993).

(59) R. W. Douglass and J. D. Ramshaw, "Future Research Directions in Computational Fluid Dynamics," J. Fluids Eng. 116, 212 (1994) (invited paper).

(60) J. D. Ramshaw, "H-Theorems for the Tsallis and Renyi Entropies," Phys. Lett. A 175, 169 (1993).

(61) J. D. Ramshaw, "Irreversibility and Generalized Entropies," Phys. Lett. A 175, 171 (1993).

(62) J. D. Ramshaw and G. L. Mesina, "Simplified Heuristic Fourier Analysis of Iteration Convergence Rates," Commun. Numer. Meths. Eng. 10, 481 (1994).

(63) J. D. Ramshaw and C. H. Chang, "Iteration Scheme for Implicit Calculations of Kinetic and Equilibrium Chemical Reactions in Fluid Dynamics," J. Comput. Phys. 116, 359 (1995).

(64) J. D. Ramshaw, "Numerical Viscosities of Difference Schemes," Commun. Numer. Meths. Eng. 10, 927 (1994).

(65) J. D. Ramshaw, "Fugacity and Activity in a Nutshell," J. Chem. Ed. 72, 601 (1995).

(66) C. H. Chang and J. D. Ramshaw, "Numerical Simulation of Nonequilibrium Effects in an Argon Plasma Jet," Phys. Plasmas 1, 3698 (1994).

(67) P. R. McHugh and J. D. Ramshaw, "Damped Artificial Compressibility Iteration Scheme for Implicit Calculations of Unsteady Incompressible Flow," Int. J. Numer. Meths. Fluids 21, 141 (1995).

(68) J. D. Ramshaw, "Thermodynamic Stability Conditions for the Tsallis and Renyi Entropies," Phys. Lett. A 198, 119 (1995).

(69) J. D. Ramshaw, "Entropy Ambiguity in a System in Equilibrium with a Finite Heat Bath," Phys. Lett. A 198, 122 (1995).

(70) C. H. Chang and J. D. Ramshaw, "Computational Study of High-Speed Plasma Flow Impinging on an Enthalpy Probe," Plasma Chem. Plasma Process. 16, 17 (1996).

(71) C. H. Chang and J. D. Ramshaw, "Modeling of Nonequilibrium Effects in a High-Velocity Nitrogen-Hydrogen Plasma Jet," Plasma Chem. Plasma Process. 16, 5S (1996).

(72) J. D. Ramshaw, "Simple Approximation for Thermal Diffusion in Gas Mixtures," J. Non-Equilib. Thermodyn. 21, 99 (1996).

(73) J. D. Ramshaw and C. H. Chang, "Friction-Weighted Self-Consistent Effective Binary Diffusion Approximation," J. Non-Equilib. Thermodyn. 21, 223 (1996).

(74) J. D. Ramshaw, "Simple Approximation for Thermal Diffusion in Ionized Gas Mixtures," J. Non-Equilib. Thermodyn. 21, 233 (1996).

(75) J. D. Ramshaw and C. H. Chang, "Multicomponent Diffusion in Two-Temperature Magnetohydrodynamics," Phys. Rev. E 53, 6382 (1996).

(76) J. D. Ramshaw, "General Remarks on Spectral Entropy vs. Statistical Entropy," J. Non-Equilib. Thermodyn. 22, 392 (1997).

(77) J. D. Ramshaw, "Self-Consistent Effective Binary Interaction Approximation for Strongly Coupled Multifluid Dynamics," J. Non-Equilib. Thermodyn. 23, 135 (1998).

(78) J. D. Ramshaw, "Simple Model for Linear and Nonlinear Mixing at Unstable Fluid Interfaces with Variable Acceleration," Phys. Rev. E 58, 5834 (1998).

(79) J. D. Ramshaw, "Simple Model for Linear and Nonlinear Mixing at Unstable Fluid Interfaces in Spherical Geometry," Phys. Rev. E 60, 1775 (1999).

(80) J. D. Ramshaw, "Effect of Slow Compression on the Linear Stability of an Accelerated Shear Layer," Phys. Rev. E 61, 1486 (2000); erratum ibid. 64, 069904 (2001).

(81) J. D. Ramshaw, "Brownian Motion in Multiphase Flow," Theor. Comput. Fluid Dynamics 14, 195 (2000).

(82) J. D. Ramshaw, "Simple Model for Mixing at Accelerated Fluid Interfaces with Shear and Compression," Phys. Rev. E 61, 5339 (2000).

(83) J. D. Ramshaw, "Fluid Dynamics and Energetics in Ideal Gas Mixtures," Am. J. Phys. 70, 508 (2002).

(84) P. Amendt, J. D. Colvin, R. E. Tipton, D. Hinkel, M. J. Edwards, O. L. Landen, J. D. Ramshaw, L. J. Suter, W. S. Varnum, and R. G. Watt, "Indirect-Drive Noncryogenic Double-Shell Ignition Targets for the National Ignition Facility: Design and Analysis," Phys. Plasmas 9, 2221 (2002).

(85) J. D. Ramshaw, "Remarks on Non-Hamiltonian Statistical Mechanics," Europhys. Lett. 59, 319 (2002).

(86) P. Amendt, J. D. Colvin, J. D. Ramshaw, H. F. Robey, and O. L. Landen, "Modified Bell-Plesset Effect with Compressibility: Application to Double-Shell Ignition Target Designs," Phys. Plasmas 10, 820 (2003).

(87) J. D. Ramshaw and P. Amendt, "Linearized Stability Analysis of Accelerated Planar and Spherical Fluid Interfaces with Slow Compression," Phys. Rev. E 67, 056304 (2003).

(88) J. D. Ramshaw, "Approximate Thermodynamic State Relations in Partially Ionized Gas Mixtures," Phys. Plasmas 11, 3572 (2004).

(89) C. H. Chang and J. D. Ramshaw, "Pressure Force Transition and Mixture Morphology Evolution in Heterogeneous Mixtures," Theor. Comput. Fluid Dynamics 19, 253 (2005).

(90) J. D. Ramshaw, "Similarity-Based Constitutive Relations for Local Mass Fluxes in Incompressible Mixing Layers," Phys. Rev. E 73, 026309 (2006).

(91) C. H. Chang and J. D. Ramshaw, "Dynamical Evolution of Volume Fractions in Multipressure Multiphase Flow Models," Phys. Rev. E 77, 066305 (2008).

(92) J. D. Ramshaw, "A Discrete Impulsive Model for Random Heating and Brownian Motion," Am. J. Phys. 78, 9 (2010).

(93) J. D. Ramshaw, "Nonlinear Ordinary Differential Equations in Fluid Dynamics," Am. J. Phys. 79, 1255 (2011).

(94) J. D. Ramshaw, "Turbulent Concentration Diffusion in Multiphase Flow," Phys. Fluids 24, 093301 (2012).

(95) J. D. Ramshaw and A. W. Cook, "Approximate Equations of State in Two-Temperature Plasma Mixtures," Phys. Plasmas 21, 022706 (2014).

(96) J. D. Ramshaw and C. H. Chang, "Numerical Stability in Multifluid Gas Dynamics with Implicit Drag Forces," Comput. Phys. Commun. 195, 61 (2015).

(97) J. D. Ramshaw, "General Formalism for Singly-Thermostated Hamiltonian Dynamics," Phys. Rev. E 92, 052138 (2015).

(98) J. D. Ramshaw, "Entropy Production and Volume Contraction in Thermostated Hamiltonian Dynamics," Phys. Rev. E 96, 052122 (2017).

(99) J. D. Ramshaw, "Statistical Analogues of Thermodynamic Extremum Principles," Eur. J. Phys. 39, 035104 (2018).

(100) J. D. Ramshaw, "Supercanonical Probability Distributions," Phys. Rev. E 98, 020103(R) (2018).

(101) J. D. Ramshaw, "Thermodynamic Derivation of Classical Density Functional Theory," Eur. J. Phys. 40, 025102 (2019).

(102) J. D. Ramshaw, "Singular Invariant Probability Densities in Dissipative Dynamical Systems," Eur. J. Phys. 40, 055102 (2019).

(103) J. D. Ramshaw, "Redefinition of the Boltzmann-Gibbs-Shannon Entropy in Systems with Continuous States," J. Phys. A: Math. Theor. 53, 095003 (2020).

(104) J. D. Ramshaw, "Thermodynamic vs Statistical Entropy Production in Thermostatted Hamiltonian Dynamics," J. Phys. A: Math. Theor. 53, 495001 (2020).

(105) J. D. Ramshaw, "Virial Expansions, Finite Differences, and Recursion Relations," EPL (Europhys. Lett.) 132, 30002 (2020).