Review/acquire thermofluids concepts applicable to turbomachinery Reynolds
transport theorem, ... Basic Energy Transactions in Turbomachines: Expansion,.
ME 422 -TURBOMACHINERY Instructor: Dr. H. Perez-Blanco, 5-7842,
[email protected], Office Hours: 204 Reber or request appointment via e-mail. Optional Text: Dixon and Hall “Fluid Mechanics and Thermodynamics of Turbomachinery” On reserve for ME 422 in the Engineering Library and also available as eBook via PSU Library. E-mail Policy: Please refrain from using e-mail for technical questions Objectives 1. Review/acquire thermofluids concepts applicable to turbomachinery such as Reynolds transport theorem, First and Second laws, isentropic efficiencies, potential flow, dissipative flows. 2. Develop an understanding of working principles applicable to centrifugal, axial and mixed flow machinery. Extend concepts applicable to hydro and wind turbines. Develop approximations for both compressible and incompressible flows. 3. Gain an understanding of loss calculations. Coursework and grade value Activity % Grade (Cumulative) 1. Attending all lectures and actively participating in class. Variable at Lectures material in http://www.mne.psu.edu/me422/ (password in class). instructor’s discretion 2. Homework is assigned on Fridays and due on Mondays. 20 3. Quizzes: Weekly quizzes (normally on Fr) will be given. (2 quizzes can be 25. dropped with no penalty) 4 Exams: Two midterms (open notes) 25 Final, (closed notes, equation sheet allowed) 5 Final, (closed notes, equation sheet allowed) 30 Grading Scale 100-95 A 94.9-90
A- 85-89.9
B+ 80-84.9
Topic Intro Dimensionless parameters Brief review Basic operations Pumps Centrifugal compressors Axial Compressors Axial Gas Turbines Axial Steam Turbines Hydro turbines Wind turbines
B
75-79.9
B- 70-74.9
C+ 65-69.9
Material Course structure. Turbomachines: a broad introduction Similarity theory, Cordier diagram. Impellers and specific speed. Performance maps. Basic principles: Euler transport theorem. Conservation Laws in integral form. Entropy generation, work loss and efficiency. Basic Energy Transactions in Turbomachines: Expansion, diffusion and energy extraction/addition. Torque and power. MIDTERM I Incompressible flow: Centrifugal pumps/Cavitation Components, operational principle, velocity triangles , design aspects Stage design and losses.
C 60-64.9
# of lectures 1 3
D
Notes L01 L7,L8
3
L1
4
L2, L3
4 5
L6 L10, L11
4
L13
Stage design and losses.
3
L15
Steam turbines, impulse stage and reaction stages.
4
L16
MIDTERM II Pelton, Francis and Kaplan runners. Efficiency Horizontal axis machines: Aerodynamics, power coefficient FINAL
4 6
L18 L17
Professional demeanor/excuses Behave professionally and reflect this in your interactions with others and via your work. Excuses for class absence and make-up work are limited to documented job interviews (within the previous week), or e-mail communication to instructor of sad family occasion or personal sickness.
