Within this study, the presented material has the objective of providing insight and design characteristics for gas jet nozzles that experimentalists and researchers should consider when utilizing this experimental method. Firstly, this study introduces the developing history and necessity for gas jet experiments and its well-known drawbacks, eventually leading to recent studies and founded knowledge regarding the nozzle geometry dependence on the flow field. The simulation methodology of this study will be presented where the discretization of the computational domain, selection of the flow physics model, and overall design of the nozzle geometry is explained and justified. The flow field data from these simulations will then be presented and compared against various analytical relations taken from literature to analyze differences among the different datasets. Finally, interpretation and discussion of the results will lead to design recommendations, reasoning, and optimization of gas jet nozzles that experimentalists should consider when deciding to incorporate the gas jet nozzle within their experiments.