**Lars Söderholm**

click for a closer look....

I am associate
professor (universitetslektor) at the Department of Mechanics, KTH,

Docent in Theoretical
Physics, University of Stockholm.

**Research**

My area of research comprises the kinetic theory of gases, continuum mechanics
and relativity.

My recent work is in non-Newtonian
phenomena and the kinetic theory of gases . It
concerns the area of gases, where the Knudsen number (or mean free path) is so
large that the Navier-Stokes equations do not apply,
but still small enough that a modified continuum description is possible.

Recently, I have also done some work on nonlinear acoustics, in particular in the study of higher order nonlinearities than those taken into account in the Burgers and Kuznetsov equations.

I am also working in the relativistic theory of fluid dynamics. For ideal fluids, the situation is quite clear, but for dissipative fluids it is not at present well understood. Relativistic kinetic theory of gases gives a possibility to approach these questions.

The cm-package by Mikael Eriksson and Lars Söderholm
is a *Maple program for the calculation of tensor fields in arbitrary
coordinates in continuum mechanics*. It is based on the mapping from
reference configuration to present configuration and can handle also two-point
tensors like the first Piola-Kirchhoff stress tensor
and the deformation gradient.

It was developed as a *Master thesis *by Mikael
Eriksson.

Graduate student: Karl Borg.

**Teaching**

Continuum mechanics A
fourth year undergraduate course;

General Continuum Mechanics,
is a somewhat extended version of the undergraduate course, which is
intended for students who did not take continuum mechanics on the undergraduate
level)

Advanced continuum mechanics is a new graduate course. It was given in spring 1999 for the first time.

This course consists of regular and singular perturbation theory applied to ordinary differential equations, in particular linear and nonlinear oscillations and Green function methods, the method of stationary phase and methods of characteristics applied to linear and nonlinear waves.

Relativistic continuum mechanics

Physics of gases (within the graduate course on fluid dynamics).

**Basic course**

A recent popular paper (in Swedish).

The Enskog HeritageA minisymposium which took place in September 1997

A useful link in
mechanics is to the IUTAM
Newsletter.

(IUTAM is the International Union of Theoretical and Applied Mechanics).

The latest in non-linear
sciences.

A useful link in relativity is General Relativity in
Sweden.

Physics News

You can reach me by e-mail at: lars.soderholm@mech.kth.se.

My address.

Five pictures from KTH

Staircase

Light

Art inauguration

Wet weather

**Poems (in Swedish)**

Last updated March 2007.