- J. Shen, R. Ni, “Experimental investigation of clogging dynamics in homogeneous porous medium”.
*Water Resources Research***53**1879–1890 (2017). - T. T. Truscott, J. Belden, R. Ni, J. Pendlebury, B. McEwen, “Three-dimensional microscopic light field particle image velocimetry”.
*Experiments in Fluids***58**16 (2017). - Cole, B. C., Marcus, G. G., Parsa, S., Kramel, S., Ni, R., Voth, G. A., “Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence”.
*Journal of Visualized Experiments*(2016). - Gorbonos, D., Ianconescu, R., Puckett, J. G., Ni, R., Ouellette, N. T., Gov, N. S., “Long-range acoustic interactions in insect swarms: an adaptive gravity model”.
*New Journal of Physics***18**073042(2016). - Ni, R., Ouellette, N. T., “On the tensile strength of insect swarms”.
*Physical Biology***13**045002 (2016). - Venugopal, K., Kelly, P., Jamaluddin, A., McConnell, C., Alger, M., Morgan, E., Ni, R., Dunn, R., Grasselli, G., “The PetroChallenge–An Innovative E&P Learning Experience Using an Interactive Learning Simulation”.
*SPE Annual Technical Conference and Exhibition.*Society of Petroleum Engineers. 2016. - Zhou, Q., Huang, Y.-X., Lu, Z.-M., Liu, L., Ni, R., “Scale-to-scale energy and enstrophy transport in two-dimensional Rayleigh–Taylor turbulence”.
*Journal of Fluid Mechanics***786**294– 308 (2016).### 2015

- Y.-C. Xie, S.-D. Huang, D. Funfschilling, X.-M. Li, R. Ni and K.-Q. Xia, "Effects of polymer additives in the bulk of turbulent thermal convection,"
*Journal of Fluid Mechanics***784**R3 (2015) - R. Ni and N. T. Ouellette, "Velocity correlations in laboratory insect swarms,"
*Eur. Phys. J. Special Topics***224**3271–3277 (2015). - R. Ni, M. H. Michalski, E. Brown, N. Doan, J. Zinter, N. T. Ouellette, and G. M. Shepherd, "Optimal directional volatile transport in retronasal olfaction,"
*Proc. Natl. Acad. Sci. USA***112**14700–14704 (2015). - R. Ni, J. G. Puckett, E. R. Dufresne, and N. T. Ouellette, "Intrinsic fluctuations and driven response of insect swarms,"
*Phys. Rev. Lett.***115**, 118104 (2015). - J. G. Puckett, R. Ni, and N. T. Ouellette, "Time-frequency analysis reveals pairwise interactions in insect swarms,"
*Phys. Rev. Lett.***114**, 258103 (2015). - R. Ni, S. Kramel, N. T. Ouellette, and G. A. Voth, "Measurements of the coupling between the tumbling of rods and the velocity gradient tensor in turbulence,"
*J. Fluid Mech.***766**, 202-225 (2015). - R. Ni, S.-D. Huang, and K.-Q. Xia, "Reversals of the large-scale circulation in quasi-2D Rayleigh–Bénard convection,"
*J. Fluid Mech.***778**, R5 (2015). - R. Ni, G. A. Voth, and N. T. Ouellette, "Extracting turbulent spectral transfer from under-resolved velocity fields,"
*Phys. Fluids***26**, 105107 (2014). - R. Ni, N. T. Ouellette, and G. A. Voth, "Alignment of vorticity and rods with Lagrangian fluid stretching in turbulence,"
*J. Fluid Mech.***743**, R3 (2014). - G. G. Marcus, S. Parsa, S. Kramel, R. Ni, G. A. Voth "Measurements of the solid-body rotation of anisotropic particles in 3D turbulence,"
*New J. Phys.***16**, 102001 (2014). - P. Wei, T.-S. Chan, R. Ni, X.-Z. Zhao and K.-Q. Xia "Heat transport properties of plates with smooth and rough surfaces in turbulent thermal convection,"
*J. Fluid Mech.***740**, 28-46 (2014). - S.-D. Huang, M. Kaczorowski, R. Ni, and K.-Q. Xia "Confinement-induced heat-transport enhancement in turbulent thermal convection,"
*Phys. Rev. Lett.***16**, 102001 (2014).

This paper was selected as a recommendation in Theoretical and Applied Mechanics Letters (22/09/2013).

- R. Ni, and K.-Q. Xia, "Experimental investigation of pair dispersion with small initial separation in convective turbulent flows,"
*Phys. Rev. E***87,**6 (2013). - R. Ni and K.-Q. Xia, "On the Kolmogorov Constants for the Second-Order Structure Function and the Energy Spectrum,"
*Phys. Rev. E***87,**2 (2013). - P. Wei, R. Ni and K.-Q. Xia, "Enhanced and Reduced Heat Transport in Turbulent Thermal Convection with Polymer Additives,"
*Phys. Rev. E***86,**1 (2012). - R. Ni, S.-D. Huang and K.-Q. Xia, "Lagrangian acceleration measurements in convective thermal turbulence,"
*J. Fluid Mech.***692,**395 (2012). - R. Ni, S.-D. Huang and K.-Q. Xia, "Local energy dissipation rate balances local heat flux in the center of turbulent thermal convection,"
*Phys. Rev. Lett.***107,**174503 (2011). - R. Ni, S.-Q. Zhou, K.-Q. Xia, "An experimental investigation of turbulent thermal convection in water-based alumina nanofluid,"
*Phy. Fluids***23,**022005 (2011). - D. C. Venerus, J. Buongiorno, R. Christianson, et al. R. Ni, "Viscosity measurements on colloidal dispersions (nanofluids) for heat transfer applications,"
*Appl. Rheol.***20,**4, 44582 (2010) - K. Sugiyama, R. Ni, R. J. A. M. Stevens, T. S. Chan, S.-Q. Zhou, H.-D. Xi, C. Sun, S. Grossmann, K.-Q. Xia and D. Lohse, "Flow reversals in thermally driven turbulence,"
*Phys. Rev. Lett.***105,**034503 (2010). - S.-Q. Zhou, R. Ni and D. Funfschilling, "Effects of shear rate and temperature on viscosity of alumina polyalphaolefins nanofluids,"
*J. Appl. Phys.***107,**054317 (2010). - J. Buongiorno, D. C. Venerus et al. (R. Ni), "A benchmark study on the thermal conductivity of nanofluids,"
*J. Appl. Phys.***106,**094312 (2009). - S.-Q. Zhou and R. Ni, "Measurement of the specific heat capacity of water-based Al2O3 nanofluid,"
*Appl. Phys. Lett.***92,**093123 (2008).

This paper was selected for the March 24, 2008 issue of Virtual Journal of Nanoscale Science & Technology.