People

Donald L. Koch Recent Publications

• Ozarkar, S.S., Sangani, A.S., Kushch, V.I., and Koch, D.L. 2009 A kinetic theory for particulate systems with bimodal and anisotropic velocity fluctuations. Phys. Fluids, 20, 123303
• Yin, X.L. and Koch, D.L. 2009 Lattice Boltzmann simulation of finite Reynolds number buoyancy-driven bubbly flows in periodic and wall-bounded domains. Phys. Fluids 20, 103304.
• Xu, H., Verberg, R., Koch, D.L. and Louge, M.Y. 2009 Dense bounded shear flows of agitated solid spheres at intermediate Stokes and finite Reynolds numbers. J. Fluid Mech. 618, 181.
• Yin, X. and Koch, D.L. 2008 The lift force on a bubble in a sheared suspension in a slightly inclined channel. J. Fluid Mech. 615, 27.
• Yin, X. and Koch, D.L. 2008 Velocity fluctuations and hydrodynamic diffusion in finite Reynolds number settling suspensions. Phys. Fluids 20, 043305..
• Subramanian, G. and Koch, D.L. 2008 Evolution of sedimenting clusters of finite Reynolds-number particles. J. Fluid Mech. 603, 63.
• Liao, Q., Subramanian, G., DeLisa, M.P., Koch, D.L. and Wu, M. (2007) Pair velocity correlations among swimming bacteria are determined by force-quadrupole hydrodynamic interactions. Phys Fluids19:061701
• Subramanian, G. and Koch, D.L. 2007 Heat transfer from a neutrally buoyant sphere in a second-order fluid. J. non-Newtonian Fluid Mech. 144, 49.
• Duru, P., Koch, D.L. and Cohen, C. 2007 Experimental study of turbulence-induced coalescence in aerosols. Int. J. Multiphase Flow. 33, 987.
• Yin, X. and Koch, D.L. 2007 Hindered settling velocity and microstructure in suspensions of spheres with moderate Reynolds number. Phys. Fluids 19, 093302.
• Chun, J. and Koch, D.L. 2006 The effect of non-continuum hydrodynamics on the Brownian coagulation of aerosol particles. J. Aerosol Sci. 37, 471.
• Subramanian, G. and Koch, D.L. 2006 Centrifugal forces alter streamline topology and greatly enhance the rate of heat and mass transfer from neutrally buoyant particles to a shear flow. Phys. Rev. Lett. 96, 134503.
• Subramanian, G. and Koch, D.L. 2006 Inertial effects on the transfer of heat or mass from neutrally buoyant spheres in linear velocity fields. Phys. Fluids 18, 073302.
• Wu, M., Roberts, J.W., Kim, S., Koch, D.L. and DeLisa, M.P. (2006) Collective bacterial dynamics revealed using a three-dimensional population-scale defocused particle tracking technique Appl Environ Microbiol 72: 4987-94.
• Yin, X., Koch, D.L., Verberg, R. 2006 Lattice-Boltzmann method for simulating spherical bubbles with no tangential stress boundary conditions. Phys. Rev. E 73, 026301.
• Koch, D.L. and Subramanian, G. 2006 The stress in a dilute suspension of spheres suspended in a second-order fluid subject to a linear flow field. J. non-Newtonian Fluid Mech. 138, 87.
• Shin, M., Koch, D.L., and Subramanian, G. 2006 A pseudospectral method to evaluate the velocity produced by a translating array of fibers. Phys. Fluids 18, 063301.
• Verberg, R. and Koch, D.L. 2006 Rheology of particle suspensions with low to moderate fluid inertia and finite particle inertia. Phys. Fluids 18, 063301.
• Chun, J. and Koch, D.L. 2005 The effect of non-continuum hydrodynamics on the Brownian coagulation of aerosol particles. J. Aerosol Sci. (to appear).
• Chun, J. and Koch, D.L. 2005 A Direct-Simulation Monte Carlo Method for Rarefied Gas Flows in the Limit of Small Mach Number. Phys. Fluids (submitted).
• Chun, J. and Koch, D.L. 2005 Coagulation of monodisperse aerosol particles by isotropic turbulence. Phys. Fluids 17, 027102.
• Duru, P., Koch, D.L. and Cohen, C. 2005 Experimental study of turbulence-induced coalescence in aerosols. J. Fluid Mech. (submitted).
• Chun, J., Koch, D.L., Rani, S.L., Ahluwalia, A. and Collins, L.R. 2005 Clustering of aerosol particles in isotropic turbulence. J. Fluid Mech. 536, 219.
• Xu, H., Verberg, R., Koch, D.L. and Louge, M.Y. 2005 Dense bounded shear flows of agitated solid spheres in a gas at intermediate Stokes and finite Reynolds numbers. J. Fluid Mech. (submitted).
• Shin, M. and Koch, D.L. 2005 Rotational and Translational Dispersion of Fibers in Isotropic Turbulent Flows. J. Fluid Mech. 540, 143.
• Subramanian, G. and Koch, D.L. 2005 Inertial effects on the orientation of nearly spherical particles in simple shear flow. J. Fluid Mech. (to appear).
• Subramanian, G. and Koch, D.L. 2005 Inertial effects on fibre motion in simple shear flow. J. Fluid Mech. 535, 383.
• Zenit, R., Tsang, Y.H., Koch, D.L. and Sangani, A.S. 2004 Shear flow of a suspension of bubbles rising in an inclined channel. J. Fluid Mech. 515, 261.
• Bach, G.A., Koch, D.L., and Gopinath, A. 2004 Coalescence and bouncing of small aerosol droplets at a gas-liquid interface. J. Fluid Mech. 518, 157.
• Tsang, Y.H., Koh, Y.H., and Koch, D.L. 2004 Bubble size dependence of the critical electrolyte concentration for the inhibition of coalescence. J. Colloid Interface Sci. 275, 290.
• Wylie, J.J., Koch, D.L., and Ladd, A.J.C. 2003 Rheology of suspensions with high particle inertia and moderate fluid inertia. J. Fluid Mech. 480, 95.
• Zenit, R., Koch, D.L. and Sangani, A.S. 2003 Local measurement of gas-phase velocity and gas volume fraction using an impedance probe. Rev. Sci. Instrum. 74, 2817.
• Kushch, V.I., Sangani, A.S., Spelt, P.D.M., and Koch, D.L. 2002 Finite Weber number motion of bubbles through a nearly inviscid liquid. J. Fluid Mech. 460, 241.
• Gopinath, A. and Koch, D.L. 2002 Collision and rebound of small droplets in an incompressible, continuum gas. J. Fluid Mech. 454, 145.
• Koch, D.L. and Pope, S.B. 2002 Coagulation-induced particle-concentration fluctuations in homogeneous, isotropic turbulence. Phys. Fluids 14, 2447.
• Bach, G.A., Hollingsworth, A.D., and Koch, D.L. 2002 Electrophoretic mobility of rigid rodlike particles in dilute aqueous and glycerol suspensions: Comparison between theory and experiment. J. Colloid Interface Sci. 251, 208.
• Hill, R.J. and Koch, D.L. 2002 The transition from steady to weakly turbulent flow in a close-packed ordered array of spheres. J. Fluid Mech. 465, 59.
• Hill, R.J. and Koch, D.L. 2002 Moderate-Reynolds-number flow in a wall-bounded porous medium. J. Fluid Mech. 453, 215.
• Hill, R.J., Koch, D.L., and Ladd, A.J.C. 2001 Moderate-Reynolds-number flows in ordered and random arrays of spheres. J. Fluid Mech. 448, 243.
• Chaouche, M. and Koch, D.L. 2001 Rheology of non-Brownian rigid fiber suspensions with adhesive contacts. J. Rheol. 45, 369.
• Zenit, R., Koch, D.L., and Sangani, A.S. 2001 Measurements of the average properties of a suspension of bubbles rising in a vertical channel. J. Fluid Mech. 429, 307.
• Tawari, S.L., Koch, D.L., and Cohen, C. 2001 Electrical double layer effects on the Brownian diffusivity and aggregation rate of Laponite clay particles. J. Colloid Interface Sci. 240, 54.
• Gopinath, A. and Koch, D.L. 2001 Dynamics of droplet rebound from a weakly deformable gas-liquid interface. Phys. Fluids 13, 3526.
• Hill, R.J., Koch, D.L., and Ladd, A.J.C. 2001 The first effects of fluid inertia on flows in ordered and random arrays of spheres. J. Fluid Mech. 448, 213.
• Koch, D.L. and Hill, R.J. 2001 Inertial effects in suspension and porous-media flows. Annu. Rev. Fluid Mech. 33, 619.
• Petrich, M.P., Chaouche, M., Koch, D.L., and Cohen, C. 2000 Oscillatory Shear Alignment of a Non-Brownian Fiber in a Weakly Elastic Fluid. J. non-Newtonian Fluid Mech. 91, 1.
• Petrich, M.P., Koch, D.L. and Cohen, C. 2000 An experimental determination of the stress-microstructure relationship in semi-concentrated fiber suspensions. J. non-Newtonian Fluid Mech. 95, 101.
• Gopinath, A. and Koch, D.L. 1999 Hydrodynamic interactions between two spheres in a highly rarefied gas. Phys. Fluids 11, 2772.
• Koch, D.L. and Sangani, A.S. 1999 Particle Pressure and Marginal Stability Limits for a Homogeneous Monodisperse Gas Fluidized Bed: Kinetic Theory and Numerical Simulations. J. Fluid Mech. 400, 229.
• Moutsopoulos, K.N. and Koch, D.L. 1999 Hydrodynamic and Boundary-Layer Dispersion in Bidisperse Porous Media. J. Fluid Mech. 385, 359.
• Koch, D.L. and Harlen, O.G. 1999 Interfacial Tension at the Boundary Between Nematic and Isotropic Phases of a Hard Rod Solution. Macromolecules 32, 219.
• Harlen, O.G., Sundararajakumar, R.R. and Koch, D.L. 1999 Numerical Simulations of a Sphere Settling through a Suspension of Neutrally Buoyant Fibers. J. Fluid Mech. 388.
• Wylie, J.J. and Koch, D.L. 1999 Particle Clustering due to Hydrodynamic Interactions. Phys. Fluids 12, 964.
• Valiveti, P. and Koch, D.L. 1999 The Inhomogeneous Structure of a Bidisperse Sedimenting Gas-Solid Suspension. Phys. Fluids 11, 3283.
• Brunk, B.K., Koch, D.L., and Lion, L.W. 1998 Observations of coagulation in isotropic turbulence. J. Fluid Mech. 371, 81.
• Brunk, B.K., Koch, D.L., and Lion, L.W. 1998 Turbulent Coagulation of Colloidal Particles. J.Fluid Mech. 364, 81.
• Valiveti, P. and Koch, D.L. 1998 Instability of Bidisperse Sedimenting Particle-Gas Suspensions. Appl. Sci. Res. 58, 275. 
• Petrich, M.P. and Koch, D.L. 1998 Interactions Between Contacting Fibers. Phys. Fluids 10, 2111-2113.
• Koch, D.L., Hill, R.J., and Sangani, A.S. 1998 Brinkman screening and the covariance of the fluid velocity in fixed beds. Phys. Fluids 10, 3035.
• Sundararajakumar, R.R. and Koch, D.L. 1998 Structure and Properties of Sheared Fiber Suspensions with Mechanical Contacts. J. non-Newtonian Fluid Mech. 73, 205.
• Brunk, B.K., Koch, D.L., and Lion, L.W. 1997 Hydrodynamic pair diffusion in isotropic random velocity fields with application to turbulent coagulation. Phys. Fluids 9, 2670.
• Gopinath, A., Chen, S.B., and Koch, D.L. 1997 Lubrication flows between spherical particles colliding in a compressible non-continuum gas. J. Fluid Mech. 344, 245.
• Gopinath, A. and Koch, D.L. 1997 A method of calculating hydrodynamic interactions between two bodies in low Mach number free-molecular flows with application to the resistivity functions for two aligned cylinders. Phys. Fluids 9, 3550.
• Tsao, H.-K. and Koch, D.L. 1997 Observations of High Reynolds Number Bubbles Interacting with a Rigid Wall. Phys. Fluids 9, 44.
• Harlen, O.G. and Koch, D.L. 1997 Orientational Drift of a Fiber Suspended in a Dilute Polymer Solution during Oscillatory Shear Flow. J. non-Newtonian Fluid Mech. 73, 81.
• Koch, D.L. and Ladd, A.J.C. 1997 Moderate Reynolds number flows through periodic and random arrays of aligned cylinders. J. Fluid Mech. 349, 31.
• Kang, S.-Y., Sangani, A.S., Tsao, H.-K., and Koch, D.L. 1997 Rheology of dense bubble suspensions. Phys. Fluids 9, 1540.
• Chen, S.B. and Koch, D.L. 1997 Rheology of Highly Aligned Nematic Liquid Crystals. J. non-Newtonian Fluid Mech. 69, 273. 
• Koch, D.L. 1996 Hydrodynamic Diffusion Near Solid Boundaries with Applications to Heat and Mass Transport into Sheared Suspensions and Fixed Fiber Beds. J. Fluid Mech. 318, 31.
• Sundararajakumar, R.R. and Koch, D.L. 1996 Non-continuum lubrication flows between particles colliding in a gas. J. Fluid Mech. 313, 283.
• Sangani, A.S., Mo, G., Tsao, H.-K., and Koch, D.L. 1996 Simple Shear Flows of Dense Gas-Solid Suspensions at Finite Stokes Numbers. J. Fluid Mech. 313, 309.
• Iso, Y., Koch, D.L., and Cohen, C. 1996 Orientation in Simple Shear Flow of Semi-Dilute Fiber Suspensions: 1. Weakly Elastic Fluids. J. non-Newtonian Fluid Mech. 62, 115.
• Iso, Y., Cohen, C., and Koch, D.L. 1996 Orientation in Simple Shear Flow of Semi-Dilute Fiber Suspensions: 2. Highly Elastic Fluids. J. non-Newtonian Fluid Mech. 62, 135.
• Chen, S.B. and Koch, D.L. 1996 Isotropic-Nematic Phase Transitions in Aqueous Solutions of Weakly Charged, Rodlike Polyelectrolytes J. Chem. Phys. 104, 359.
• Chen, S.B. and Koch, D.L. 1996 Electrophoresis and Sedimentation of Charged Fibers. J. Colloid Interface Sci. 180, 466.
• Chen, S.B. and Koch, D.L. 1996 Rheology of Dilute Suspensions of Charged Fibers. Phys. Fluids 8, 2792.
• Rahnama, M., Koch, D.L., and Shaqfeh, E.S.G. 1995 The Effect of Hydrodynamic Interactions on the Orientation Distribution in a Fiber Suspension Subject to Simple Shear Flow. Phys. Fluids 7, 487.
• Koch, D.L. 1995 A Model for Orientational Diffusion in Fiber Suspensions. Phys. Fluids 7, 2086.
• Tsao, H.-K. and Koch, D.L. 1995 Simple Shear Flows of Dilute Gas-Solid Suspensions. J. Fluid Mech. 296, 211.
• Bussell, S.J., Koch, D.L. and Hammer, D.A. 1995 The Effect of Hydrodynamic Interactions on the Diffusion of Integral Membrane Proteins: Diffusion in Plasma Membranes. Biophys. J. 68, 1836.
• Dodd, T.L., Hammer, D.A., Sangani, A.S., and Koch, D.L. 1995 Numerical Simulations of the Effect of Hydrodynamic Interactions on the Diffusivities of Integral Membrane Proteins. J. Fluid Mech. 293, 147.
• Rahnama, M., Koch, D.L., and Cohen, C. 1995 Observations of Fiber Orientation in Suspensions Subjected to Planar Extensional Flows, Phys. Fluids 7, 1811.
• Koch, D.M. and Koch, D.L. 1995 Numerical and theoretical solutions for a drop spreading below a free fluid surface. J. Fluid Mech. 287, 251.
• Tsao, H.-K. and Koch, D.L. 1994 Collision of Slightly Deformable, High Reynolds Number Bubbles with a Short-Range Repulsive Force. Phys. Fluids 6, 2591.
• Koch, D.L. 1994 Hydrodynamic Diffusion in a Suspension of Sedimenting Point Particles with Periodic Boundary Conditions. Phys Fluids 6, 2894.
• Bussell, S.J., Koch, D.L., Hammer, D.A. 1994 The Effect of Hydrodynamic Interactions on the Tracer Diffusion of Integral Membrane Proteins in Organelle and Reconstituted Membranes. Biophys. J. 68, 1828.
• Koch, D.L. 1994 Kinetic Theory for a Mobile Adsorbed Gas. J. Chem. Phys. 101, 4391.
• Sundararajakumar, R.R., Koch, D.L. and Shaqfeh, E.S.G. 1994 The Effective Conductivity and Extensional Viscosity of a Dispersion of Aligned Disks Phys. Fluids A 6, 1995.
• Koch, D.L. 1993 Hydrodynamic Diffusion in Dilute Sedimenting Suspensions at Moderate Reynolds Numbers. Phys. Fluids A 5, 1141.
• Bussell, S.J., Hammer, D.A., and Koch, D.L. 1993 The Effect of Hydrodynamic Interactions on the Tracer and Gradient Diffusion of Integral Membrane Proteins in Lipid Bilayers. J. Fluid Mech. 258, 167.
• Kumaran, V. and Koch, D.L. 1993 Properties of Bidisperse Particle-Gas Suspensions; Part 1: Collision Time Small Compared with Viscous Relaxation Time. J. Fluid Mech. 247, 623.
• Kumaran, V. and Koch, D.L. 1993 Properties of Bidisperse Particle-Gas Suspensions; Part 2: Viscous Relaxation Time Small Compared with Collision Time. J. Fluid Mech. 247, 643.
• Kumaran, V., Tsao, H.-K., and Koch, D.L. 1993 Velocity Distribution Function for a Bidisperse, Sedimenting Particle-Gas Suspension. Int. J. Multiphase Flow 19, 665.
• Kumaran, V. and Koch, D.L. 1993 The Effect of Hydrodynamic Interactions on the Average Properties of a Bidisperse Suspension of High Reynolds Number, Low Weber Number Bubbles. Phys. Fluids A 5, 1123.
• Harlen, O.G. and Koch, D.L. 1993 Simple Shear Flow of a Suspension of Fibers in a Dilute Polymer Solution at High Deborah Number. J. Fluid Mech. 252, 187.
• Sundararajakumar, R.R. and Koch, D.L. 1999 Electrical Conductivity of Isotropic Fiber Suspensions. Proc. Roy. Soc. Lond A 455, 1923.
• Rahnama, M., Koch, D.L., Iso, Y., and Cohen, C. 1993 Hydrodynamic, translational diffusion in fiber suspensions subject to simple shear flow. Phys. Fluids A 5, 849.
• Kumaran, V. and Koch, D.L. 1993 The Rate of Coalescence in a Suspension of High Reynolds Number, Low Weber Number Bubbles. Phys. Fluids A 5, 1135.
• Bussell, S.J., Hammer, D.A., and Koch, D.L. 1993 The Effect of Hydrodynamic Interactions on the Tracer and Gradient Diffusion of Integral Membrane Proteins in Lipid Bilayers. J. Fluid Mech. 258, 167.
• Stover, C., Koch, D.L., and Cohen, C. 1992 Observation of Fiber Orientation in a Semi-Dilute Suspension in Simple Shear Flow. J. Fluid Mech. 238, 277.
• Bussell, S.J., Koch, D.L., and Hammer, D.A. 1992 Resistivity and Mobility Functions for a Model System of Two Equal Proteins in a Membrane. J. Fluid Mech. 243, 679.
• Koch, D.L. and Shaqfeh, E.S.G. 1992 Averaged-Equation and Diagrammatic Approximations to the Average Concentration of a Tracer Dispersed by a Gaussian Random Velocity Field. Phys. Fluids A 4, 887.
• Koch, D.L. 1992 Anomalous Diffusion of Momentum in a Dilute Gas-Solid Suspension Phys. Fluids A 4, 1337.
• Acrivos, A., Batchelor, G.K., Hinch, E.J., Koch, D.L., and Mauri, R. 1992 Longitudinal Shear-Induced Diffusion of Spheres in a Dilute Suspension. J. Fluid Mech. 240, 651
• Harlen, O.G. and Koch, D.L. 1992 Extensional Flow of a Fiber Suspension in a Dilute Polymer Solutions. Phys. Fluids A 4, 1070.
• Shaqfeh, E.S.G. and Koch, D.L. 1992 Polymer Stretch in Fixed Beds of Spheres or Fibers. J. Fluid Mech. 244, 17.
• Koch, D.L. and Sangani, A.S. 1991 The AC Electrical Impedance of a Fractal Boundary to an Electrolytic Solution. J. Electrochemical Soc. 138, 475.
• Koch, D.L. and Shaqfeh, E.S.G. 1991 Screening in Sedimenting Suspensions. J. Fluid Mech. 224, 275.
• Frattini, P.L., Shaqfeh, E.S.G., Levy, J.L., and Koch, D.L. 1991 Observations of Axisymmetric Tracer Particle Orientation During Flow through a Dilute Fixed Bed of Fibers. Phys. Fluids A 3, 2516.
• Koch, D.L. 1990 Kinetic Theory for a Monodisperse Gas-Solid Suspension Phys. Fluids A 10, 1711.
• Koch, D.L. and Shaqfeh, E.S.G. 1990 The Average Rotation Rate of a Fiber in the Linear Flow of a Semi-Dilute Suspension Phys. Fluids A 2, 2093.
• Shaqfeh, E.S.G. and Koch, D.L. 1990 Orientational Dispersion of Fibers in Extensional Flows Phys. Fluids A 2, 1077.
• Koch, D.L. and Brady, J.F. 1989 Anomalous Diffusion Due to Long-Range Velocity Fluctuations in the Absence of a Mean Flow Phys. Fluids A 1, 47.
• Koch, D.L., R.G. Cox, H. Brenner, and J.F. Brady 1989 The Effects of Order on Dispersion in Porous Media. J. Fluid Mech. 200, 173.
• Koch, D.L. 1989 On Hydrodynamic Diffusion and Drift in Sheared Suspensions Phys. Fluids A 1, 1742.
• Koch, D. L. and Shaqfeh, E.S.G. 1989 The Instability of a Dispersion of Sedimenting Spheroids. J. Fluid Mech. 209, 521.
• Koch, D.L. and J.F. Brady 1988 Anomalous Diffusion in Heterogeneous Porous Media. Phys. Fluids 31, 965.
• Brady, J.F. and D.L. Koch 1988 Dispersion in Porous Media (review) in Disorder and Mixing ed. E. Guyon, J.-P. Nadal, and Y. Pomeau, Kluwer Academic Publishers, Boston, pp. 107.
• Shaqfeh, E.S.G. and D.L. Koch 1988 The Effect of Hydrodynamic Interactions on the Orientation of Axisymmetric Particles Flowing through a Fixed Bed of Spheres or Fibers. Phys. Fluids 31, 728.
• Shaqfeh, E.S.G. and D.L. Koch 1988 The Combined Effects of Hydrodynamic Interactions and Brownian Motion on the Orientation of Particles Flowing Through Fixed Beds Phys. Fluids 31, 2769.
• Koch, D.L. and J.F. Brady 1987 Nonlocal Dispersion in Porous Media: Nonmechanical Effects. Chem. Eng. Sci. 42, 1377.
• Koch, D.L. and J.F. Brady 1987 A Nonlocal Description of Advection-Diffusion J. Fluid Mech. 180, 387.
• Koch, D.L. 1987 The Attenuation of a Compressional Sound Wave in the Presence of a Fractal Boundary. Phys. Fluids 30, 2922. (Frenkiel award winning paper)
• Koch, D.L. and J.F. Brady, 1987 The Symmetry Properties of the Effective Diffusivity Tensor in Anisotropic Porous Media. Phys. Fluids 30, 642.
• Koch, D.L. and J.F. Brady 1986 Effective Diffusivity of Fibrous Media. A.I.Ch.E.J. 32, 575.
• Koch, D.L. and J.F. Brady 1985 Dispersion in Fixed Beds. J. Fluid Mech. 154, 399.