Spring 2012 MECH 3313 THERMO-FLUIDS LABORATORY

Transcription

1 Spring 2012 MECH 3313 THERMO-FLUIDS LABORATORY Course Description Instructor An introductory class to basic measurements and principles of engineering experimental practices. This course focuses on measurements relevant to fluid dynamics, thermodynamics, and heat transfer. Norman Love, PhD Research Assistant Professor, Department of Mechanical Engineering address: Office: Engineering (Metallurgy) Building M-305 Office hours: MT am Office Phone: Textbook References No textbook is required for this class; however, readings will frequently be posted on blackboard (so check it daily). Quizzes will be given based on these readings and on class notes hence class attendance is also strongly recommended. "A Brief Introduction to Fluid Mechanics" by D. F. Young, B. R. Munson and T. H. Okiishi, John Wiley, 1996 "Heat Transfer: A Practical Approach" by Y. A. Cengel, McGraw Hill, second edition, 2003 Laboratory manual and handouts / Others as needed for specific experiments Course Content 1. Basic Measurements a. Temperature Measurement b. Viscosity Measurement c. Pressure Gauge Calibration d. Velocity 2. Fluid Mechanics a. Wind Tunnel Lift and Drag b. Centrifugal Pump 3. Thermodynamics a. Rankine Cycle b. Brayton Cycle 4. Heat Transfer a. Thermal Conductivity b. Free Convection and Radiation c. Forced Convection 5. Solar Energy a. Flat Plate Solar Collector b. Parabolic Solar Collector

2 Overview This course will provide you with hands-on experience dealing with practical issues in engineering experiments. In this lab, you will learn how to take the basic measurements of well-known phenomenon and analyze data, taking into account various sources of error and uncertainty in the setup. There are ten experimental test setups; each designed to test a specific phenomenon. Learning Objectives The general purpose of this course is to strengthen the student s understanding of engineering measurements. Therefore, my specific learning objectives for this course are for you to: 1. Understand how the fundamental equations can be applied to engineering measurements 2. Become familiar with sources of experimental uncertainty and apply these concepts mathematically 3. Be able to methodically record data and present it in a technical report format Lab Reports Each of you will submit one report on each experiment even the experiments are done in groups. You must submit the report at the beginning of the lab session of when it is due. Include all necessary figures and tables in the report with suitable captions. The content of the reports is given at the end of this document, please follow these instructions you will be graded according to the rubric included here also. Grading Laboratory Reports 50% Group Evaluations 25% Final 25% A (100-90%): B (89-80%): C (79-70%): D (69-60%): F (59% and Below) Academic dishonesty All graded materials must represent the student s individual work. Scholastic dishonesty is the attempt of any student to present as his or her own work of another, or any work which he has not honestly performed, or attempting to pass any examination by improper means. Scholastic dishonesty is a serious offense and will not be accepted. Academic misconducts will be handled according to the current university policy.

3 Reasonable Accommodation Policy: Any student in this course who has a disability that may prevent him or her from fully demonstrating his or her abilities should contact me personally as soon as possible so we can discuss accommodations necessary to ensure full participation and facilitate the student's educational opportunities. Web: Phone: (915) voice or TTY Fax: (915) dss@utep.edu

4 Spring 2012: MECH 3312 Thermal-Fluids Laboratory Guidelines for Written Reports Your written report should include the following sections: SECTION 1: Cover Page - Shows the project title, date(s) of conducting experiments, date of submission of report, number and title of course for which the report is prepared, name of the individual to whom the report is submitted (1 page) Abstract - Describes briefly the objectives of the project, method of execution of project, and present important results and conclusions (1/2 page) Table of Contents (1 page) Nomenclature (1 page) List of Figures (1 page) List of Tables (1 page) SECTION 2: Introduction - Explains the current practical significance of the project, expected applications of the devices tested, and results to be obtained with references to previous work by other investigators (1 page) Specific Objectives of the Project (1/4 page) Background Theory - Includes definitions of various terms used, underlying theory, and relevant equations employed (2 pages) SECTION 3: Experimental Apparatus - Includes a schematic of the set up (and a photograph is optional), a table of specifications of instruments and a very brief description of special features of the set up if any (3 pages) Experimental Procedure - Explains the step-by-step data collection procedure with references to the schematic, and a list of precautions to be taken (2 pages)

5 SECTION 4: Data Presentation - Includes tables of readings and calculated results, and graphical presentations of the results (variable number of pages), and highlights of results you want the reader to notice (1 page) Discussion Discuss experimental difficulties/ procedural trends in the data presented. Discuss uncertainty in the data presented. Note- This section highlights experimentation procedure and how it is reflected in the data, not theory and academic references. SECTION 5: Results Explain and interpret all data all collected and presented using theory, previous studies and academic references. Conclusions - States briefly the main results and inferences drawn (1/4 page) Recommendations - Presents any suggestions such as instrumentation, and new experiments to better accomplish your original objectives (1/4 page) References - Includes the complete list of references used and indicated by numbers in the report (1 page) Appendices - Includes raw data, sample calculations of results, estimation of uncertainty, data checking and rejection, and correlation development if any (4 pages)

6 Spring 2012: MECH 3312 Thermal-Fluids Laboratory Grading Sheet for Written Reports Section 1: Abstract and Introduction Earned Maximum 1) Correct Page Numbers with Table of Contents 2 2) Abstract i) Why was the report written? Importance of subject and 2 relevance to an engineer ii) What and how were measurements taken? General terms 2 iii) Specific results, i.e. results of comparison between 2 engines and/or important numerical results 4) Introduction i) Why was the report written? Importance of subject and 2 relevance to an engineer ii) What and how were measurements taken? Specific 3 iv) List the objectives of the experiment 2 Total: 15 Section 2: Theory Earned Maximum 1) Theory: i) Brief description of relevant theory. Specifically, the 8 theory that has an effect on the results. ii) Listing of all relevant formulas used in calculations 7 Note- Look for diagrams, references, anything which better explains the concept. Total: 15 Section 3: Experimental Apparatus Earned Maximum 1) Experimental Apparatus: i) Labeled sketch (or clear photograph) of setup 2 ii) Description of important/unique components of setup 2 iii) Table/listing of experimental apparatus 2 2) Experimental Procedure: i) Numbered list of steps taken in measurements 4 Total: 10

7 Section 4: Data Analysis Earned Maximum 1) Data Presentation: i) All appropriate figures and tables 10 ii) One or two sentence description of each figure 3 2) Discussion: i) Do the results agree with experimental procedure? 5 i.e. If there was equipment difficulty is this being noted? 3) Listing of experimental uncertainties 2 Total: 20 Section 5: Results and Conclusions Earned Maximum 1) Results: Explain all results and all figures reported. i) Are their results being explained with theory, references, 10 previous studies, etc.? ii) Are the results complete? i.e. Are all figures discussed? 3 Are all tables mentioned? 2) Conclusions: Brief statements listing the main results and 3 conclusions of the report. (Should tie into Objectives) 3) Recommendations: What can be done to improve? 2 4) References: In standard format. 2 5) Raw Data and Sample calculations: Each formula used should 10 have a written out example of its application. 6) Uncertainty Analysis: The main variables should have a 10 written out example of the procedure used to calculate its uncertainty. Explanation of data rejection, if used. Total : 40