1st Student's Major

Mechanical and Civil Engineering

1st Student's College

Science, Engineering and Technology

Students' Professional Biography

Joseph Dobmeier is a senior double-majoring in Mechanical Engineering and Computer Science with a minor in Mathematics at Minnesota State University, Mankato. During his enrollment at MSU, Mankato, he has been involved with the student chapter of the American Society of Mechanical Engineers (ASME) and Students for Sustainability club. From fall 2007 through spring 2009 he was a member of a team with four other students competing in the EPA-sponsored “Student Sustainable Design Competition.” His team undertook the design, construction and testing of three prototype solar water heaters made from reclaimed or recycled materials and developed a mathematical model to predict their performance. Since 2006 he has been employed at MSU with Student Support Services providing individual math and science tutoring for disadvantaged students as well as entry-level training for new tutors. In 2008 he was hired to assist with research activities within the Department of Mechanical Engineering, leading to internships during the summers of 2008 and 2009. The internships were focused on providing programming support and engineering analysis for a variety of research projects. After graduation in May 2010, he hopes obtain employment in industry while also studying part-time for a graduate degree in Scientific Computing.

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 is a manufacturing process used to produce single crystals of semiconductor materials such as mercurous chloride (Hg2Cl2). In the past this time-varying process has been studied with numerical simulation by considering three dimensional flow using an axi-symmetric two dimensional model or by restricting the simulation to asymmetric two dimensional flow and dropping the assumption of axi-symmetry from the model. It is generally agreed that neither of these methods accurately represent the true behavior of the process. The purpose of this research was to extend the asymmetric two dimensional model to three dimensions thereby obtaining a solution which more authentically characterizes reality. The resulting data was then visualized and analyzed. The simulations were performed with a commercially available computational fluid dynamics software package called FIDAP on the 140-processor “supercomputer” at Minnesota State University, Mankato. The visualization tool used was Tecplot 360. The results have shown that the flowfield is indeed asymmetric and cannot be accurately described by a two dimensional simplification.

Creative Commons License

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



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