Transportation is one of the largest sources of greenhouse gas (GHG) emissions and urban pollution, representing approximately 17% of Australia's GHG emissions [1], and 72% of the carbon monoxide emissions in Melbourne [2]. Air pollution impacts in China have been estimated at 1.3M excess deaths per annum with associated economic costs of $US1.3trillion per annum [3]. Any optimisation of transportation systems, whether by improved efficiency or better dispersion of exhaust fumes, has the potential to result in significant health, economic, comfort and environmental benefits.

train emission

Figure 1: Synergetics have experience using computational fluid dynamics (CFD) to model vehicle emissions. This figure shows pathlines and contours coloured by concentration for diesel train emissions in a railway tunnel.

Synergetics has a stong history of transportation works including:

A heat exchanger for a diesel locomotive

Figure 2: Synergetics have experience investigating and optimising transport equipment. This photo shows the internal configuration of a diesel locomotive heat exchanger unit.

[1] Quarterly Update of Australia’s National Greenhouse Gas Inventory: March 2014, Department of the Environment, Australian Government.

[2] EPA victoria website,, accessed November 2014.

[3] OECD (2014). The cost of air pollution: Health impacts of road transport