UCONN / UPRM Mechanical Engineering Senior Design Job Ticket Infotech Aerospace Services Sponsoring Company: Project Title: Validated Air Response Predictions for Engine Temperature Gradients Roger Paolillo () Prime Contacts: Horacio Altagracia ( - ext: 4228) Faculty Advisor: Dr. Bryan Weber This project will work with students at the University of Puerto Rico at Mayaquez. The UPRM student team will be conducting parallel analyses based on the geometry and flow and heat load conditions provided by the UCONN team. The Engineering Challenge: Today’s gas turbine engines have a large number of external tubes (see figure 1) to transfer fluids and or high pressure air for cooing components that operate in higher temperature environments in the gas generator. The effectiveness of this air for cooling is a function of the temperature of the air within the tube. The issue is that as the air moves along the tube there is additional heat transfer caused by the local temperature environment. The current analytical method to predict the increase in air temperature uses a classic billet (volume of material) plunged into a hot environment. The billet sees an instantaneous change in surface temperature and responds exponentially. Applied to air responses, the answer is validated empirically through testing. Only a single transient condition is obtained and then other conditions are obtained through a simple ratioing technique. Path dependent heat additions and losses from a known source response are not considered. Description of Problem/Project: A 2015-2016 Senior Design team (Team 18) studied the heat addition problem and analyzed and fabricated a rig (see figure 2) to measure data for a known flow rate and input temperature with controlled additional heat sources. The
UCONN / UPRM Mechanical Engineering Senior Design Job Ticket Sponsoring Company: Infotech Aerospace Services Project Title: Validated Air Response Predictions for Engine Temperature Gradients Prime Contacts: Roger Paolillo () Horacio Altagracia ( - ext: 4228) Faculty Advisor: Dr. Bryan Weber This project will work with students at the University of Puerto Rico at Mayaquez. The UPRM student team will be conducting parallel analyses based on the geometry and flow and heat load conditions provided by the UCONN team. The Engineering Challenge: Today’s gas turbine engines have a large number of external tubes (see figure 1) to transfer fluids and or high pressure air for cooing components that operate in higher temperature environments in the gas generator. The effectiveness of this air for cooling is a function of the temperature of the air within the tube. The issue is that as the air moves along the tube there is additional heat transfer caused by the local temperature environment. The current analytical method to predict the increase in air temperature uses a classic billet (volume of material) plunged into a hot environment. The billet sees an instantaneous change in surface temperature and responds exponentially. Applied to air responses, the answer is validated empirically through testing. Only a single transient condition is obtained and then other conditions are obtained through a simple ratioing technique. Path dependent heat additions and losses from a known source response are not considered. Description of Problem/Project: A 2015-2016 Senior Design team (Team 18) studied the heat addition problem and analyzed and fabricated a rig (see figure 2) to measure data for a known flow rate and input temperature with controlled additional heat sources. The
Team%2022%20IAS%20Validated%20Air%20Response%202016-2017%20FINAL%2008-23.docx