1st Student's Major

Mechanical and Civil Engineering

1st Student's College

Science, Engineering and Technology

Students' Professional Biography

Wade Luhman graduated from Minnesota State University Mankato with a Bachelor of Science in Mechanical Engineering in May of 2006. During his undergraduate studies Wade was active in the American Society of Mechanical Engineers (ASME) and had several internships. Wade performed in the Old Guard Poster and Oral Competitions at two different regional student conferences as part of his involvement with ASME. During the summer and fall semester of 2004 Wade worked for Hutchinson Technology Inc. as a co-op in the Advanced Process Development group. In the summer of 2005 he worked at Stanford University in California as part of an undergraduate research program through the National Nanotechnology Infrastructure Network. Currently Wade is working for Seagate Technology in Shakopee, Minnesota as an intern over the summer before starting graduate school in the fall. He will be attending the University of Minnesota in the Twin Cities to earn his Ph.D. in Materials Science.

Mentor's Name

Patrick Tebbe

Mentor's Email Address


Mentor's Department

Mechanical and Civil Engineering

Mentor's College

Science, Engineering and Technology


Physical vapor transport (PVT) is a material processing method commonly used to produce different types of semiconductor materials. Computer modeling of PVT is important to understand the fundamentals of the processing method. Due to the large amount of computer processing power and storage needed to solve the computer models many of the previously solved simulations have been simplified to efficiently utilize computer usage. Previous PVT computer simulations of mercurous chloride (Hg2Cl2) have assumed constant temperature profiles on the source and crystal substrate for simplicity. These simulations were performed using the FIDAP computational fluid dynamics software package. In this research the system boundary conditions for the previously solved mercurous chloride models were modified using the FIDAP software package to more accurately represent an actual PVT system. The results were then compared to the previously solved simplified cases and the boundary condition effects were examined. Previous research found that there are ranges of Rayleigh number values that give different flow structure forms. It was found that the new simulations show that the bifurcation points for the flow fields have moved to slightly higher Rayleigh number values. It was also found that some of the flows that were previously found to be in oscillation no longer oscillate with the new boundary conditions. These results are important for the crystal growth and semiconductor community in improving future processes and product quality.

Creative Commons License

Creative Commons Attribution-NonCommercial 4.0 International License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License



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