Dr. Rajni

Assistant Professor & Assistant Dean

B.Sc. B.Ed (RIE, Bhubaneswar);

M.Sc. (NIT Rourkela);

Ph.D. (POSTECH, South Korea)

Dr. Rajni is an Assistant Professor & Assistant Dean of Decision Sciences at the Jindal Global Business School, India. She earned a PhD degree from Pohang University of Science and Technology, POSTECH, South Korea in 2017 under the guidance of Professor In Seok Kang. A First Rank holder in Masters in Science (Mathematics) from NIT Rourkela (2010) and a Bachelor in Science and Education from Regional Institute of Education, Bhubaneswar, India (2008). Her doctoral research titled “Ion size effect on electrocapillarity and electroosmotic flow in nanochannels” is based on mathematical modeling of electrolytes in nanochannels.

Her research interests are Computational fluid dynamics, Modeling and Simulation of Partial Differential Equations, Linear and Non-linear equations, Mathematical Modeling and its application in nanofluidics. Her teaching interests are in the field of Decision Sciences. At JGBS, she has taught the following courses: Business Mathematics, Business Statistics, Data Analysis and Interpretation, Statistics for Management, Business Calculus and Applications.

Journal Articles

  • Rajni, M. Oh*, I. S. Kang*,Ion size effects on the osmotic pressure and electr-ocapillarity in a nanoslit: Symmetric and asymmetric ion sizes, Phys. Rev. E, Vol. 93, 063112 (2016).
  • Rajni, S. Kang and J. M. Oh*, Universality of steric effects of electrolytes in nanoconfinements, EPL 124 14004 (2018).
  • Rupali, P. Kumar and Rajni, Spectral boundary element modeling of water waves in Pohang New Harbor and Paradip Port. Ocean Engineering, Vol. 196, 106765 (2019).
  • Gulshan, P. Kumar and Rajni, Moored ship motion analysis in Paradip port under the resonance conditions using 3-D boundary element method.J Mar Sci Technol (2020).



Conference Proceedings

  • Rajni and P. Kumar*, Mathematical modeling of influence of ion size effects in an electrolyte in a nanoslit with overlapped EDL, AIP Conference Proceedings 1897, 020005, (2017).
  • Kumar*, Gulshan and Rajni, Multidirectional random wave diffraction in a real harbor by using 3-D boundary element method, AIP Conference Proceedings 1897, 020006 (2017).
  • Kumar*, Rajni and Rupali, Wave Induced Oscillation in an Irregular Domain by using Hybrid Finite Element Model, Journal of Physics: Conf. Series 1039, 012019 (2018).
  • Rajni* and Prashant Kumar, Numerical Modeling of Ion-Size Effect on Electroos-motic Flow in Nanochannels, Proceedings of the Jangjeon Mathematical Society, 22 (2019), No. 1. pp. 193 – 200.

     Note: * denotes the corresponding authorship.


Book Chapter:

  • Kumar, Rupali, Rajni, Modeling of Wave-Induced Oscillation in Pohang New Harbor by Using Hybrid Finite Element Model. In: Singh V., Gao D., Fischer A. (eds) Advances in Mathematical Methods and High Performance Computing. Advances in Mechanics and Mathematics, vol 41. Springer, Cham (2019).



  • A. Lee, Rajni, I. S. Kang,Analysis of electrowetting of electrolyte solution in a nanochannel with overlapped electric double layer, Proc. of the 2015 KIChE Spring Meeting, Jeju, ICC, Apr. 22-24 (2015).
  • Rajni, A. Lee, I. S. Kang,Osmotic pressure of an electrolyte in a cylindrical nanochannel: steric effect of ions, Proc. of the 2015 KIChE Spring Meeting, Jeju,ICC, Apr. 22-24 (2015).
  • Rajni, S. Kang,Influence of steric effects of Ionic Liquid in a nanochannel- 2 Dimensional Study, Proc. of the 2014 KIChE Spring Meeting, Changwon, CECO, Apr.23-25 (2014).
  • Rajni, S. Kang,Steric effect induced Electrocapillarity of Ionic Liquid in a nanoslit with overlapped EDL, Proc. of the 2013 KIChE Fall Meeting, Daegu, EXCO, Oct. 23-25 (2013).
  • Rajni, S. Kang,Implications of steric effects in an electrolyte in a nanoslit, Proc. of the 2012 KIChE Fall Meeting, Busan, BEXCO, Oct. 24-26 (2012).


Academic Projects

Junior Research Fellow:    Duration: (28.06.2010-23.05.2011)

  • Project undertaken by BRNS (Board of Nuclear Sciences), Mumbai, Govt. of India.
  • Title “Fuzzy finite element approach for solving the eigenvalue-eigenmode analysis for imprecisely defined systems”.
  • Advisor: Prof. S. Chakraverty (Department of Mathematics, NIT Rourkela, India)

Master’s Thesis Project:    Duration:(15.07.2009-01.06.2010)

  • Project in the course “Research Project”.
  • Title “Neural network learning through Lagrange interpolation”.
  • Advisor: Prof. S. Chakraverty (Department of Mathematics, NIT Rourkela, India).

Summer Project:   Duration: (13.05.2009-15.07.2009)

  • Project in the course “Industrial Training”.
  • Title “Dynamic and Magnetic Evolution of Sunspots”.
  • Advisor: Dr. M. Hiremath (Indian Institute of Astrophysics, Bangalore, India).