TY - JOUR TI - A computational study of breath flow in an alcohol detection sensor DO - https://doi.org/doi:10.7282/t3-xwa0-0890 PY - 2020 AB - Every year many accidents and deaths are caused related to drunk driving in the United States alone. Not only lives are lost but also public and private property destruction is caused. To tackle these ever-occurring problems, the (“DADSS”) DRIVER ALCOHOL DETECTION SYSTEM for SAFETY program was established. This program is responsible to tackle the problems faced due to drunk driving. This program is directed at developing an alcohol detection system that is capable of detecting whether a driver is impaired by alcohol and take appropriate measures accordingly. The research focuses on the design of the inlet for the sensor used in alcohol detection in a vehicle and the simulation of breath flow through the inlet designed to retrofit an actual car. This study is carried out to show how the sensor inlet design could be improved if needed. We study what is the effect of variation of flow rate, variation of inlet area, variation of inlet shape, and change in inclination of the inlet air on the senor inlet. In every variation considered for the study, all the other factors are kept constant. Results are displayed with the images of flow over and in the sensor inlet. Velocity profiles and velocity contours are shown for all the simulations to grasp a better understanding of how these effects could be potentially used towards the advancement of the research in the future. We can use the conducted research results to further make necessary changes in the design of the sensors if deemed needed. KW - Mechanical and Aerospace Engineering KW - Blood alcohol -- Analysis LA - English ER -