In medicine, a nebulizer is a device used to administer medication in the form of a mist inhaled into the lungs. The common technical principle of all nebulizers is to use oxygen, compressed air or ultrasonic power, as means to break up medical solutions/suspensions into small aerosol droplets, for direct inhalation from the mouthpiece of the device. The most commonly used nebulizers are Jet nebulizers, which are also called “atomizers”. Jet nebulizers are connected to a compressor that causes compressed air or oxygen to flow at high velocity through a liquid medicine to turn it into an aerosol, which is then inhaled by the patient. The main objective of this study is to optimize the jet nebulizer in order to deliver the medicine in small enough droplets to achieve an acceptable efficiency of medicated aerosol to reach the lungs. This study concentrates on design optimization of the nozzle by analysis of flow parameters, evaluation of the path of the fluid flow and determination of nozzle diameter and flow pressure.

Keywords: Aerosol, Atomizer, Nozzle.