Produced a thermofluids report analysing the behaviour of a free circular air jet using pitot-static measurements and an inclined manometer. The project involved measuring centreline and radial velocity profiles, then using the data to study jet spreading, entrainment, volumetric flow rate, and momentum flux. The results showed a clear core region over the first 170 mm from the nozzle, followed by a steady decrease in centreline velocity and broader radial profiles downstream. Momentum-flux deviation averaged 9.24%, showing approximate agreement with the theoretical expectation of momentum conservation. This developed my ability to apply Bernoulli’s equation, process experimental flow data, and connect measured velocity profiles to real fluid behaviour.