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Rajesh Singh

Computational Engineering
Post Doctorate RA C
Pacific Northwest National Laboratory
PO Box 999
MSIN: K7-90
Richland, WA 99352

Biography

Dr. Singh is currently working as Post Doctorate RA in Computational Engineering Group of Advanced Computing, Mathematics, and Data Division. He earned his M.S. (2006) from Indian Institute of Technology Delhi (India) and Ph.D. (2013) from the University of Delaware. His primary research interests include computational fluid dynamics and multiphase flows. During his doctoral research, he studied the drop and cell dynamics in shear flow using front tracking method. As a member of the Carbon Capture Simulation for Industry Impact (CCSI2), Dr. Singh is working to support development of two-fluid CFD modeling capabilities for CO2 capture via solvent absorption through complex reactor, namely, flow through structured packed column. Using Volume of Fluid method (VOF), micro-scale hydrodynamics such as mass transfer area coefficient, interfacial area and liquid holdup are investigated and subsequently their closure is being developed. The developed closure might be further used in device scale modeling of packed column.

Research Interests

  • Fluid Mechanics, Computational Fluid Dynamics, Multiphase Flow, Bio-Fluid Mechanics, Emulsions, Interfacial Thin Film Flows, Turbulent Flows

Affiliations and Professional Service

  • American Physical Society (APS)

Selected Publications

2017

  • Singh RK, JE Galvin, and X Sun. 2017. “Hydrodynamics of the rivulet flow over corrugated sheet used in structured packings.” International Journal of Greenhouse Gas Control 64:87–98. doi:10.1016/j.ijggc.2017.07.005.
  • Singh RK, JE Galvin, GA Whyatt, and X Sun. 2017. “Breakup of a liquid rivulet falling over an inclined plate: identification of a critical weber number.” Physics of Fluids 29(5):052101. doi:10.1063/1.4981920.

2016

  • Singh RK, JE Galvin, and X Sun. 2016. “Three dimensional simulation of liquid film flow over an inclined plate: effects of solvent properties and contact angle.” Chemical Engineering Science 142:244–257. doi:10.1016/j.ces.2015.11.029.

2015

  • Singh RK and K Sarkar. 2015. “Hydrodynamic interactions between a pair of capsules in a simple shear: effects of viscosity ratio, heterogeneous collision and comparison with drops.” Physical Review E 92(6):063029. doi:10.1103/PhysRevE.92.063029.

2014

  • Singh RK, X Li, and K Sarkar. 2014. “Lateral migration of a capsule in plane shear near a wall.” Journal of Fluid Mechanics 739:421-443. doi:10.1017/jfm.2013.624.

2013

  • Sarkar K and RK Singh. 2013. “Spatial ordering due to hydrodynamic interactions between a pair of colliding drops in a confined shear.” Physics of Fluids 25(5):051702. doi:10.1063/1.4805082.

2011

  • Singh RK and K Sarkar. 2011. “Inertial effects on the dynamics of a drop in shear and dispersed stresses.” Journal of Fluid Mechanics 683:149-171. doi:10.1017/jfm.2011.257.

2010

  • Singh RK, SN Singh, and V Seshadri. 2010. “CFD prediction of the effects of the upstream elbow fittings on the performance of cone flowmeters.” Flow Measurements and Instrumentation 21(2):88-97. doi:10.1016/j.flowmeasinst.2010.01.003.
  • Singh RK, SN Singh, and V Seshadri. 2010. “Performance evaluation of orifice plate assemblies under non- standard conditions using CFD.” Indian Journal of Engineering and Material Science 17:397-406.

2009

  • Olapade P, RK Singh, and K Sarkar. 2009. “Pair-wise interactions between deformable drops in a free shear flow at finite inertia.” Physics of Fluids 21(6):063302. doi:10.1063/1.3153905.
  • Singh RK and K. Sarkar. 2009. “Effects of viscosity ratio and three dimensional positioning on hydrodynamic interactions between two viscous drops in a shear flow at finite inertia.” Physics of Fluids 21(10):103303. doi:10.1063/1.3253351.
  • Singh RK, SN Singh, and V Seshadri. 2009. “Effect of up-stream swirl on the performance of V-Cone flowmeter using CFD.” Flow Measurements and Instrumentation 20(2):69-74. doi:10.1016/j.flowmeasinst.2008.12.003.
  • Singh RK, SN Singh, and V Seshadri. 2009. “Numerical investigation of S-shaped diffusing duct having both horizontal and vertical offset with circular cross section.” International Journal of Fluid Mechanics and Research 36(4):375-390. doi:10.1615/InterJFluidMechRes.v36.i4.60.

2008

  • Singh RK, SN Singh, and V Seshadri. 2008. “Effect of the corner rounding on the performance of double offset Y-shaped aircraft intake duct.” IMechE Journal, Journal of Aerospace Engineering 222:969-983. doi:10.1243/09544100JAERO368.
  • Singh RK, SN Singh, and V Seshadri. 2008. “Influence of the inlet shape on the performance of double offset transition S-duct.” International Journal of Computational Methods 5(1):1-19. doi:10.1142/S0219876208001364.
  • Singh RK, SN Singh, and V Seshadri. 2008. “Performance characteristics of double offset Y-shape aircraft side intake duct.” Journal of Aircraft 45(4):1230-1243. doi:10.2514/1.34137.

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