Who am I?

My name is Ngamta Thamwattana, or some people call me ``Natalie". I am from a little province in the South of Thaildnd, ``Chumphon" http://www.tourismthailand.org/destinationguide/list.aspx?provinceid=69. I finised high school in my home town and then continued my study at Mahidol University, Bangkok. I was a science student at 1st year and in the 2nd year I chose major Mathematics. The reason was that we didn't have to play with the chemical stuffs and we didn't have to kill rat or any insects. In my 2nd year, I received the scholarship from IPST (Institute of teaching Science and Technology), Thailand and this scholarship supported me until I completed my PhD in 2005.

Research Interests

Continuum mechanics of flowing granular material.

The analytical solutions for Rat-holes, Sand-piles.

Mathematical modelling in nanotechnology.


Doctor of Philosophy degree in Applied Mathematics from the University of Wollongong, Australia. Thesis title, ``Some Analytical Solutions for Problems Involving Highly Frictional Granualar Materials''. Supervisor: Professor James M. Hill.

Bachelor of Science (Maths) Hons. degree from the Mahidol University( http://www.mahidol.ac.th), Thailand 1997-2000.


  1. J. M. Hill & N. Thamwattana (2003) Two approximate analytical solutions for the kinematically determined velocity equations for granular solids, International Journal of Non-Linear Mechanics 38 , 1523-1531.
  2. N. Thamwattana & J. M. Hill (2003) Analytical solutions for tapering quadratic and cubic rat-holes in highly frictional granular solids, International Journal of Solids and Structures 40 , 5923-5948.
  3. N. Thamwattana & J. M. Hill (2003) Analytical stress and velocity fields for gravity flows of highly frictional granular materials, Acta Mechanica 164 , 91-112.

  4. G. M. Cox, N. Thamwattana & J. M. Hill (2004) A formal exact mathematical solution for a sloping rat-hole in a highly frictional granular solid, Acta Mechanica , 170 , 127-147 .
  5. N. Thamwattana, G. M. Cox & J. M. Hill (2004) Stress distributions in highly frictional granular heaps, Zeitschrift fur angewandte Mathematik und Physik (ZAMP) , 55 , 330-356.
  6. N. Thamwattana & J. M. Hill (2004) Force distributions at the bases of curved highly frictional granular stockpiles, Quarterly Journal of Mechanics and Applied Mathematics , 57 , 447-466.
  7. N. Thamwattana & J. M. Hill (2003) Some simple analytical solutions for highly frictional materials, In The 5th Biennial Engineering Mathematics and Applications Conference Proceedings (eds. M. Pemberton, I. Turner and P. Jacobs), (The Institution of Engineers, Australia, 2002) pp. 223-229.
  8. N. Thamwattana & J. M. Hill (2004) Perturbation solutions for highly frictional granular media, Proceedings of the Royal Society of London A. , 461 , 21-42.

My favourite Thai website is http://www.hunsa.com where you can find Thai news and many more.