D. V. Khakhar's photograph

D. V. Khakhar

B.Tech., Chemical Engineering, I.I.T. Delhi, 1981
Ph.D., Chemical Engineering, University of Massachusetts, Amherst, 1986
Room:
151
Off:
+91 (22) 2576 7212
Res:
+91 (22) 2576 4148
Fax:
+91 (22) 2572 3480
Email:
khakhar[AT]iitb.ac.in

Link To Detailed Information

Research Areas

  1. Granular flow

  2. Mixing and Segregation

  3. Fluid mixing

  4. Polymerization of rodlike polymers

  5. Polyurethanes

Awards and Affiliations

  1. Amar Dyechem Award, Indian Institute of Chemical Engineers, 1993.

  2. Fellow, Indian Academy of Sciences, Bangalore, December 1996.

  3. Shanti Swarup Bhatnagar Prize, Engineering Sciences, Council for Scientific and Industrial Research, 1997.

  4. Swarnajayanti Fellowship, Department of Science and Technology, 1998.

  5. N. R. Kamath Memorial Lecture, IPI, 1999.

  6. Herdillia Award, Indian Institute of Chemical Engineers, 1999.

  7. Millennium Gold Medal, Indian Science Congress, 2000.

  8. Fellow, Indian National Academy of Engineering, 2001.

  9. Excellence in Teaching Award, IIT Bombay, 2001.

  10. Fellow, Indian National Science Academy, 2002.

  11. MRSI Medal Lecture, 2003.

  12. H. H. Mathur Award for Applied Sciences, IIT Bombay, 2005.

  13. Indira Manudhane Best PG Teacher Award, Chemical Engineering Department, IIT Bombay, 2005.

Current Research

  • Granular Solids
    The mixing of granular solids is of considerable importance for a large number of industrial applications (mixing of pharmaceuticals, cement manufacture, etc.) yet it is poorly understood from a fundamental viewpoint. One of the complicating factors is simultaneous segregation due to differences in particle characteristics. Our work has focused on simple prototype mixers (rotating cylinders) to gain an insight into the fundamental physics for the case of dry granular materials. We are currently applying some of the basics to the understanding of calcination and clinker formation in rotary kilns.

  • Rodlike polymers
    Rodlike polymers can be spun into ultra high strength fibres (e.g. Kevlar) which find application in the manufacture of cables, tyre cord, reinforcement for composites, bullet-proof fabrics, etc. Due to their anisotropic shape such polymers are easily oriented by shear fields. We are investigating the effect of such orienting fields applied during polymerization, by means of experiment, theory and Brownian dynamics simulations.

  • Polyurethane foams
    Polyurethane foams are made by the polymerization of polyols with di-isocyanates with simultaneous gas generation. Applications are widespread and include thermal isulation and cushioning. The aim of our studies is to a obtain an understanding of the effect of formulation and processing conditions on the dynamics of formation, structure and final properties of free rise and moulded foams

Selected Publications

  1. U. S. Agarwal, and D. V. Khakhar, Enhancement of polymerization rates of rodlike molecules by shearing, Nature, 360, 53-55 (1992).
  2. G. O. Fountain, D. V. Khakhar and J. M. Ottino, Visualization of three-dimensional chaos, Science, 281, 683-686, (1998).
  3. A. Swaminathan and D. V. Khakhar, Rigid polyurethane foams for buoyancy applications: Hydraulic resistance, Cellular Polym,19, 1-11, (2000).
  4. A. Agge, S. Jain and D. V. Khakhar, Acceleration of polymerization of rodlike molecules by flow, J. Am. Chem. Soc., 122, 10910-10913(2000).
  5. A. V. Orpe, and D. V. Khakhar, Scaling relations for granular flow in quasi-two-dimensional rotating cylinders, Phys. Rev. E, 64, 031302 (2001).
  6. D. V. Khakhar, A. V. Orpe and S. K. Hajra, Segregation of granular materials in rotating cylinders, Physica A, 318, 129-136, (2003).
  7. A. V. Orpe, and D. V. Khakhar, Solid-liquid transition in a granular shear flow, Phys. Rev. Lett., 93, 068001 (2004).
  8. S. K. Hajra and D. V. Khakhar, Radial mixing of granular materials in a rotating cylinder: Experimental determination of particle self-diffusivity, Phys. Fluids, 17, 013101 (2005).
  9. P. Mondal and D. V. Khakhar, Simulation of the percolation of water into rigid polyurethane foams at applied hydraulic pressures, Polym. Eng. Sci., 46, 970-983 (2006).
  10. A. V. Orpe and D. V. Khakhar, Rheology of surface granular flows, J. Fluid Mech., 571, 1-32 (2007).
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