Gas dynamics of combustion of gas-air mixture in semi-closed space with relief of pressure into gasless adjacent space

A physical description is presented of the processes which occur during the release of pressure from a gas filled chamber into a gasless chamber when the holes connecting the first chamber to the atmosphere are small to ensure safe pressures when the mixture contained ignites. The gas dynamics of the combustion which occur in the two chamber system was studied, and the basic factors which influence the process are identified. The model employed was a 100 liter cubic chamber divided in half by a barrier and which communicates with the atmosphere through a hole are described. The gas employed was propane. The influence of the additional chamber on the way in which the pressure in the first chamber behaves was studied. It is found that the presence of an adjacent gasless compartment leads to sharp intensification of combustion in the two chamber system, which is accompanied by alternating overflow of gases between the chambers, and that the combustion of the gas air mixture in both chambers becomes highly turbulent.