34th International Symposium on Rarefied Gas Dynamics

The International Symposium on Rarefied Gas Dynamics is a biennial academic conference. The symposia are a forum for the presentation of recent advances in the field of rarefied gas dynamics. Research presented encompasses applications of space, materials, and propulsion, as well as the basic physics of molecular interactions, gas surface interactions, kinetic theory, astronomical observations, gas transport, multi-phase flows, combustion, non-equilibrium hypersonic gas dynamics, and plasma processing. The first symposium was held in 1958 in Nice, France. Since that time, the symposia have been organized in various countries in North America, Europe, Asia, and Australia.

The Symposium gathers scientists from several disciplines to discuss basic science and technological applications in the following areas:

  • Boltzmann and related equations: mathematical properties of the Boltzmann equation, proofs of existence of solutions in particular cases, model kinetic equations
  • Monte Carlo methods and numerical solutions
  • Moment methods
  • Experimental methods
  • Gas-surface interactions
  • Aerospace. Examples include high speed flows, shock waves, nozzle expansions, high altitude aerodynamics.
  • Jets and plumes
  • Internal flows and vacuum systems
  • Reactive gas dynamics
  • Rarefied plasmas
  • MEMs and NEMs
  • Granular flows
  • Porous media

Since the first Symposium, where Harold Grad was one of the lecturers, the RGD Symposia are recognized as the principal forum for the presentation of recent advances in the fields associated with Rarefied Gas Dynamics.  It has consistently attracted important papers from technical leaders such as Nobelists John Fenn and Ilya Prigogine.  Other luminaries have included Lloyd Thomas, Graeme Bird, E.P. Muntz, J.P. Toennies, Y.L. Klimontovich, Carlo Cercignani, Berni Alder, A.V. Bobylev, Francois Golse, Y. Sone, and many more. 

Co-chairs:

Professor Sean O'ByrneAustralian National University
Dr Tamara SopekThe University of Queensland

Local Organising Committee:

Dr David PettyThe University of New South Wales Canberra
Dr Chris JamesThe University of Queensland
Dr Rowan GollanThe University of Queensland
Professor Timothy McIntyreThe University of Queensland

Conference Venue:

RGD34 will be held at the University of Queensland's (UQ) St Lucia campus in downtown Brisbane, Australia. UQ is a top 50 ranked university in the world and through UQ's Centre for Hypersonics, UQ is a leading world university in hypersonic and shock wave research.

UQ's St Lucia campus houses several major hypersonic test facilities, such as the T4 Stalker Tube (shown below) and the X2 expansion tube, which will be able to be toured during the conference.

Getting to the Conference

Brisbane is well connected through the Brisbane International Airport (BNE). There are regular direct flights to and from Brisbane into most of Asia and to the East Coast of the USA. Generally, major cities in the rest of the world can be accessed via a single connecting flight.

Further information about destinations which can be reached from Brisbane can be found on the Brisbane International Airport website.

Host City: Brisbane

Brisbane is the capital of the Australian state of Queensland. Being a semi-tropical climate, Brisbane is a great place to visit in winter when ISSW35 will be held. Information about accomodation and restaurants specifically related to ISSW35 will be provided at a later date, but generic information about Brisbane can be found below.

Registration:

Conference registration information and prices will be forthcoming.

Visa:

Information for those requiring visas to come to the conference will be forthcoming.

Australia:

Further information about Australia will be forthcoming.

RGD34

Brisbane, Australia

July 2026


For general enquiries, please email rgd@rgd34.org


 


RGD34 acknowledges the Traditional Owners of the land where the conference will be held, the Turrbal and Jagera people, and pay our respects to Elders past, present, and emerging. We celebrate the stories, culture and traditions of Aboriginal and Torres Strait Islander Elders of all communities who also work and live on this land.