Purdue University's Intellectual Property Policy for open-source software states: "The University permits software code to be contributed to open-source projects upon (1) the authorization of the funding sponsor and principal investigator (if any) for the coding project and (2) the consent of the University administrator(s), if any, who request or direct the coding project."
This project is not funded, thus, there is no need to sign a disclosure with the University or the funding sponsor. However, it will be useful to obtain written authorization from the PI, if any.
This case is similar to a case where a student would write some code for a course and choose to make it open source, and would not require any authorization from Purdue University.
Office of Technology Commercialization's staff, Purdue University can be contacted if we require any further clarification.
I am grateful to Dr. Joseph Kasper, Assistant Director of Business Development, Office of Technology Commercialization, Purdue University for sharing his experience and resources for this issue.